To produce well-composed, flicker-free slow-motion videos, you’ll need the appropriate sort of lighting. This is an important consideration when making correctly exposed, flicker-free slow-motion videos.
The ability to create realistic videos demands good video editing software and adequate lighting. Even though we do not see real things in slow motion, we still have a visual sense of how slow motion may enhance the feeling of reality in what we are viewing.
If you want to provide the highest quality slow-motion video, you’ll need the appropriate lighting equipment. We’ll look at what light technology is best for slow motion and why it’s important in this section.
VARIABLES IN SLOW MOTION FILMING
If you’re recording a slow-motion video, there are a few key factors to consider: Frame rates Shutter speed Lighting
You won’t be able to create an impactful and flowing slow motion if you don’t have control over all the variables. This fluidity is essential because without it, your slow-motion video will appear jerky and unprofessional.
Read more: speed up or slow down any video!
If you just slow down a 25fps recording without addressing the frame rate, there will be no seamless transition between frames. Therefore, you’ll need to film at a greater frame rate (for example, 150 fps) and then play it back at a slower speed (in this situation, 25 FPS). You should think about both factors.
This is determined by the look you want to portray. For example, 60 frames per second may be appropriate for obtaining a slow-motion effect, but in certain cases, you may need a higher frame rate. The addition of extra frames in the lower frame rate for viewing provides for a fluid motion.
Another crucial element is the shutter speed. The amount of blurring can be controlled by varying the duration of exposure. The more time the shutter is open, the blurrier the movement becomes.
The usual guideline is to use a shutter speed twice the frame rate for a natural-looking amount of motion blur. A too-high shutter speed, on the other hand, will make your slow-motion video appear jagged. As a result, you should also think about how much movement there will be in your subject when shooting it at such a high speed.
Using faster shutter speeds and frame rates also implies that your camera will have less time to gather light for each shot you take. As a result, if you want to expose your photographs perfectly, you’ll need more powerful sources of illumination. You won’t get good slow-motion footage unless there is the correct quantity of light.
This is why light is so important when filming in slow motion.
WHY FLICKER IS A LIGHTING ISSUE
The flicker in tungsten lighting sources is caused by the frequency of the main supply’s alternating current. The main supply frequency in the UK is 50Hz, whereas it is 60Hz in the United States. The number of complete AC sine waves per second is known as hertz (Hz).
The HMI source’s frequency is derived from the supply ballast, which is usually set at 50Hz, 60Hz, or “flicker-free” (usually 100Hz) in speciality ballasts such as those supplied with our ARRI M Series fixtures. For ultra-slow-motion pictures captured with our Vision Research Phantom VEO4K @ 1000fps in 4K, a special (but loud!) 1000Hz frequency can be selected.
Some light sources, such as LEDs, do not give off a constant luminous flux but instead have an intensity that varies with the supply’s voltage. PER second, when mains voltage reverses polarity, light intensity pulses in time with this mains frequency.
When filming lightning, you’re shooting with certain frame rates that, when mismatched to the lighting frequency, cause the picture to flicker or roll. In this manner, the camera’s sensor’s frame rate works in a similar way to that of the AC mains supply’s frequency. 25p (25 frames per second) has a frequency of 25Hz. When using a 1/50th or 180-degree shutter on a 25p sensor, the frequency is now 50Hz rather than 25Hz.
When comparing the two, it’s important to keep in mind that, unlike slow-motion video, high-speed photography does not record actual events in real-time. High-speed filming isn’t live action; rather, it is a type of animation with higher frame rates and more depth. In general, if the frame rate matches the whole number multiples of the lighting frequency, no flicker should be visible. However, when the frame rate differs from the frequency for example as shooting 25p in America where the mains supply is 60Hz causes flicker. When shooting at 1000fps, a lighting source of 50Hz is far too slow to keep up with the frame rate, therefore again at these insanely high frame rates you can see 50Hz flicker.
To address the issue, change the frame rate, shutter speed, or lighting frequency to match. The type of light source is crucial in keeping flicker levels low. For slow-motion filming, the greater the frequency, the better.
You won’t have to worry about flicker if you’re shooting outdoors with the sun and reflectors as your light sources. But, as previously said, most electrically generated light sources will flicker in some manner. The degree of flicker that is seen by the viewer can be controlled by manipulating the perception of the flickering for them.
Flicker can be caused by a variety of different factors. When capturing at a standard, 25fps frame rate, for example, you may use a tungsten lamp or even a residential fluorescent light and not have flicker issues. Flicker is considerably more likely to occur when the frame rate and shutter speed are modified. Different sorts of lighting have varying flicker rates:
Fluorescent lighting may be used alongside HID lamps. While these bulbs are well suited for use in homes and buildings with electrical systems that cannot support high-frequency ballasts (such as incandescent lights), they do require a flicker-free electronic ballast to operate effectively. HMI is an acronym for hydrargyrum medium-arc iodide. Instead of using an incandescent bulb, these lamps employ an arc lamp.
The electronic ballast is a device that generates an ignition pulse and regulates the arc. This transforms the sine wave into a square wave, allowing the light to remain constant for longer after zero-crossing (the instant when there is no voltage).
A low-frequency HMI lamp will have a frequency of 75 to 100 Hz, with the gap between electrodes growing over time and the arc extinguishing for longer periods during zero-crossing. This can raise the flicker factor above 3%, which means that you should replace the bulb.
LEDs are susceptible to flicker, particularly if you dim them. LEDs are also prone to flicker because they react quickly to voltage fluctuations. To overcome this, high-quality LED lighting fixtures regulate the frequency of each individual LED on the panel, providing better light (as well as price!).
Because of this mechanism, most LED fixtures are now limited to much higher frequencies than we can capture with specialized cameras. The new huge dot LED technology is capable of operating at more than 10,000Hz! This makes them an excellent match for high-frame-rate filming.
Tungsten lamps require AC mains power to generate their frequency radiation. If you dim tungsten lights, you are changing the amount of current they receive and will therefore impact the frequency and flicker.
Fluorescent bulbs can be used with either electronic or magnetic ballasts. Flicker is reduced, but because both fluorescent lamps and energy-saving bulbs have higher flicker factors than other lighting methods, it may not be eliminated. Magnetic ballasts (such as those utilized in building strip lights) cause flicker in fluorescent lamps with a flicker factor of between 30% and 60%. You can reduce the flicker of electronic ballasts to 0 per cent (as seen in Kino Flo Divas / 4x4s etc), down to 10%, or even eliminate it altogether (with a Kino having a 0% flicker factor).
When you’re utilizing flicker-free light sources, as with most of the other formats, you’ll need to compensate for the wild flicker produced by magnetic ballasts by changing the frame rate and/or shutter angle.
HIGH-SPEED BALLASTS FOR HMI LIGHTING
Arc wander can occur in LED lights as well, and it’s caused by a plasmatic hot spot that moves within the bulb.
This can produce a glistening effect with a rapid colour shift as a result. As a consequence, you won’t be able to guarantee flicker-free lighting using HMI lamps with standard electronic ballast. One way to solve the problem is by utilizing high-frequency ballasts for HMI lamps. These can significantly reduce or even eliminate flickering.
The popularity of these high-speed ballasts, which operate between 300Hz and 1000Hz, has enabled filmmakers to create flicker-free images of excellent quality at frame rates as high as 1000fps. If you’re looking for flicker-free lighting, why not visit Pro Motion Hire?
How to Convert HTML to PDF in 3 Easy Steps
The number of internet users in the world is projected to reach 5 billion by the year 2027. While none of us want that large inbox of marketing emails and web pages, we do want the HTML documents they’ve produced.
We want them so we can read them offline and on devices that don’t support viewing raw HTML code. We want something that we can view with ease.
That’s where HTML to PDF conversion comes in. First, let’s take a look at how to convert HTML to pdf. Keep reading!
Learning About PDF and HTML
A PDF, or Portable Document Format, is a type of electronic document file that is widely used for sharing and printing. PDF documents can come from a variety of sources, from scanned paper documents to Microsoft Word files. They are often used for displaying documents, such as presentations, newsletters, printouts, or forms.
However, HTML stands for Hypertext Markup Language and is a code language used for writing a webpage. It’s the building blocks of the internet and controls how a page displays, what the user interacts with, and how the page looks.
- Choose an HTML File to Process
To convert HTML to PDF in three easy steps, first, choose the HTML file you would like to process. This can be done by either navigating to the local file directory on your computer or by linking to an external file source.
Once the file has been chosen, the HTML document is ready for the next step.
- Select the Output File Format
This step is important as depending on the destination of the HTML file, the PDF will have to be formatted differently. For example, if the PDF is being uploaded to the web, it may need to be in a specific size and format.
Once the output format has been chosen, the user needs to upload the HTML file. Then, all that is left to do is to click the convert button, and the document will convert to PDF with the selected output file format.
- Upload the HTML File to Convert
Uploading the HTML file to convert to PDF is one of the most straightforward steps in the process. This can be on any web browser such as Google Chrome, Safari, etc.
Next, open the print or save as PDF function in your web browser. This will allow you to convert the HTML file into a PDF document. You can also learn to convert HTML to PDF C# by checking out this guide!
Convert HTML to PDF Today
Using the cloud-based HTML to PDF converter is fast, easy, and secure. You can easily convert HTML to PDF files. Select the output file format and then click “convert” to get a high-quality PDF document.
Converting HTML to PDFs is a practical way to preserve content and preserve its formatting. Following the easy steps outlined in the article above, it’s simple to prep and converts your HTML code into a PDF file in no time.
Try it now to experience the ultimate convenience of PDF conversion!
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Samsung vs. iPhone: Which One Is Better?
Over 90% of the world’s population has a mobile phone. Owning a mobile device has become essential for our day-to-day lives. They act as our calendars, GPS, and source of all forms of communication.
Two of the biggest producers of mobile devices are Apple and Samsung. But this leaves many people with the debate of Samsung vs iPhone when it comes to buying a new phone.
This article is a quick comparison guide for those looking to buy a Samsung or Apple phone.
We cover prices and product design, as well as comparing hardware and software. We also look at cameras, battery quality, and a few other considerations. Let’s get into it!
Price and Value
The biggest initial difference between an Apple and Samsung phone is the price. The flagship phones for Apple tend to be a lot more expensive than those produced by Samsung.
There is also a lot less flexibility in price with Apple products. They tend to be less widely available, only found at licensed retailers at one price point. Samsung products are much easier to get hold of, and often have a greater range of price tags.
Apple prizes its sleek minimal designs. Most models are thin and lightweight, often compromising screen size. The new iPhone 14 has an aerospace-grade aluminum casing for protection.
Although over time Apple has improved device durability, they’re still prone to shattering.
Samsung phones tend to have a bigger screen size, with bulkier bodies. They are often a lot more customizable and have more features than iPhones.
The flagship Samsung models feature Gorilla glass. So they are more resistant to cracks when dropped.
They also have an IP68 rating. This means they withstand submersion for up to half an hour in shallow water. They are also very resistant to dust.
Buying a case for any new smartphone is a good idea. They protect your phone against bumps and scrapes during day-to-day wear and tear. You can protect your new Samsung smartphone with these new Galaxy cases.
Don’t forget to think about the available colors for your smartphone. Apple products are usually available in 3-5 colors, depending on the model. Samsung tends to offer a wider variety of colors and finishes to suit your personal style.
Phone Camera Quality
Apple has a reputation for having high-quality cameras. They boast amazing photo and video quality and a consistent camera experience. But many of the newer Samsung models have improved their camera experience a lot.
Samsung smartphones offer a versatile experience, with many fun features to experiment with. This is great for people who want Instagram-ready images straight from the camera roll, as the images are auto-edited. For those who prefer to edit their own images and want a more natural color profile, buy an iPhone.
But in the end, it is more about personal preference on how you want your photos to look.
Processing power is where Apple has the upper hand over Samsung models. Their flagship models have the latest technology, the A15 Bionic chip. It boasts seamless loading times and amazing graphics, with great thermal efficiency.
The flagship model for Samsung, the Galaxy S22, uses the Qualcomm Snapdragon 8th Gen processor. This offers elite gaming capabilities and high-speed Wi-Fi and audio.
Both the iPhone 14 Pro and Galaxy S22 come in several storage sizes from 128GB up to 512GB. But the iPhone 14 Pro also has a 1TB size available.
Apple and Samsung use different operating systems: iOS for Apple and Android for Samsung. Both systems offer great experiences for users, so it comes down to what you want out of your phone.
iOS is much more streamlined and easy to use. It offers more control over RAM management, software, and personal security. Android is much more customizable, often at the expense of being easy to navigate.
Battery life and charging are some of the big areas where iPhones fall short. Samsung smartphones offer an impressive battery life, with super fast charging.
Many of their phones have advanced charging options. This includes charging without a cable, as well as being able to charge other devices from your phone.
The iOS software in Apple products is quite efficient, preventing excessive battery usage. But it can still take up to three hours for a full charge on the newest iPhone. This doesn’t compare to less than an hour on the new Galaxy S22 smartphone.
When choosing between an iPhone and a Samsung, there are a few other features to consider. These can make a big difference in your experience using your device.
Voice-activated assistants are now available on most smart devices. Siri is the Apple assistant and Samsung uses Bixby. Most Android devices also have the option of Google Assistant.
Although Siri is competitive software, Google assistant is the best on the market.
Security is another factor to think about.
Apple is a lot stricter when it comes to which products get allowed into the Apple app store. This reduces the chances of viruses or breaches of personal information. Samsung products are likely to need extra security apps for peace of mind.
Product integration is another consideration for people with multiple devices. Apple products offer seamless integration between iPad, Mac or Apple watch.
Samsung is further behind in this aspect, but you can still access data across many devices. Downloading the Google suite, such as Google calendar or drive, can help achieve this.
Samsung vs iPhone
When it comes to choosing Samsung vs iPhone, there are many factors to consider. This article has highlighted a few key points from operating systems to battery life. But in the end, it is all about personal preference and what you want out of your smartphone experience.
If you found this article helpful then check out our technology section. There you can find other great reads about smartphones, online businesses, and more!
LED Lighting Industry and Home LED Lighting
THE COLORED LED AND WHITE LED MARKETS
Though the market for hued (Red, Green, Blue) RGB LEDs is deep rooted, the market for white LEDs is as yet developing. Why? At the point when you consider enterprises that actually depend on white, non-LED lighting, for example, TVs, auto makers, PC screens, note pad PCs, LCD backdrop illuminations, and so on, you can gas station lighting the push to turn into the forerunner in white LED producing. Many individuals are shocked that a business would miss an income producing opportunity that switching a home or business over completely to LED would make. In any case, since substitution white LED bulbs and retrofits are at last available, doesn’t imply that they ought to be on your nearby shopping list. In exceptionally straightforward terms, the market for hued and variety changing LEDs is developed. While engineers are as yet down ways of making them more splendid and more proficient, the sacred goal of the LED business is in creating volume creation of high-productivity, high-brilliance white LEDs.
It very well might be more straightforward to consider hued LEDs (RGB) and white LEDs concerning another industry: Automotive. RGB LEDs resemble the gas powered motor: Reliable, plentiful, simple to utilize and fabricate, and genuinely well developed as far as the potential for new or advancement innovations. There are parcels on makers and each has their own arrangement of licenses and “subtle strategies” to assist with giving themselves some promoting influence over the opposition. White LEDs resemble the elective energy industry for transportation: Quite differed, still moderately “new”, as yet waiting be market demonstrated, more costly, more testing to make due. There are numerous producers, each utilizing an alternate innovation or blend of innovations to accomplish what they accept is the “the following enormous thing.” Following this relationship, RGB LEDs are full sufficiently grown to contend on cost alone and the drop in costs fills new applications for shaded LEDs that had not been considered beforehand. White LEDs, then again are as yet growing in fact and ought not be shopped in light of cost alone. The gas station canopy lighting for quality and life span energizes the further innovative work into white LEDs.
11 THINGS TO CONSIDER IN DETERMINING LED UPGRADES
Since there are such countless factors that should be thought of, making a speedy and simple suggestion about progressing to white LEDs is unimaginable. To get a kick off on the future, consider each lighting source in each room and lay out what it’s basic role is. Whenever you have done this, audit the accompanying things to help figure out where on the need buy list every substitution ought to be. The following are a couple of common principles to assist you with deciding whether a LED redesign is the best decision for you:
1.) Is the lighting situated in a led canopy lighting gas stations where the essential occupant is more established or has versatility issues?
On the off chance that the LED substitution produces satisfactory light levels, LED options are ideally suited for use in homes where wellbeing is a main concern. Realizing that an evil or more seasoned individual won’t have to change a wore out light again can give genuine serenity.
2.) Is starting expense an essential consider deciding whether you will overhaul?
The ongoing idea of the white LED market implies that costs are still somewhat high, particularly contrasted with customary lighting. Being an early adopter implies paying a premium; would you say you are OK with realizing you might have saved money on a similar innovation on the off chance that you had paused?
3.) Is the light situated in splendid daytime daylight or an area of high intensity?
Elevated degrees of intensity will recognizably abbreviate the life expectancy of any LED, particularly white LEDs. While considering LEDs, attempt to guarantee that both the installation and the area take into account satisfactory inactive cooling to stay away from variety shift and life span issues. This is a lot greater concern while considering retrofit bulbs as opposed to considering a “all out bundle” LED installation and light.
4.) Are you expecting to lessen the intensity yield from a conventional light source?
In restrooms, pantries and little spaces, regular lighting can create awkward intensity. Driven lighting is perfect for these areas since they produce no intensity and on the grounds that moderately enlightening more modest regions with LEDs presents considerably less of a test.
5.) Is the lighting situated in a space of unpleasant help or natural limits?
Carport entryway openers, unheated/cooled utility rooms and outside studios put outrageous expectations of lighting gear. Vibrations that can break a light fiber and cold temperatures that can make a fluorescent cylinder gleam are of no outcome to LED lighting, pursuing these substitutions a genuinely simple choice.
6.) Is the splendor basic to the application?
LEDs are directional ordinarily, so attempting to meet a particular brilliance assumption over a wide region isn’t the most ideal utilization of LED lights. The ongoing harvest of standard fluorescent cylinders or high-cove lighting will likely be more proficient for these applications.
7.) Are you attempting to retrofit a current lighting installation to oblige a LED substitution?
Latest lighting apparatuses are intended to catch and mirror however much light as could be expected from regular light sources that produce light from each of the 360 degrees. Since LEDs discharge extremely directional light, there are much of the time many trade offs that should be made by producers to make LEDs “work” for the best number of retrofits. Whenever the situation allows, rather than retrofit bulbs consider a “complete bundle” LED lighting installation that has been planned starting from the earliest stage to utilize LEDs effectively.
8.) Is the light result and nature of the LED rendition adequate contrasted with your current lighting?
With the assortment of lighting innovation accessible (radiant, fluorescent, LED, and so forth) the best way to find out about how the lighting will perform is to look at the light result or lumen and variety temperature determinations rather than the wattage as is normal of the greater part of us brought with customary illuminating in the home. The US Department of Energy has formulated a normalized “lighting realities” mark comparative in idea to the sustenance name tracked down on food varieties, to assist customers with contrasting lighting.
9.) Are the bulbs you’re thinking about supplanting challenging to access or reach?
In the event that they are, LED substitutions are extraordinary competitors in light of the fact that whenever they are transformed, you will probably never need to transform them from now onward since LEDs don’t “wear out” like an ordinary bulb.
10.) Are you supplanting every one of the lights in a specific region or simply a solitary bulb?
Except if you know the variety temperature of all the lighting in the room, attempt to be predictable in anything that lighting innovation you pick. For instance, in the event that your room utilizes basically halogen lighting, it is probable a warm variety temperature and changing a solitary perusing light to LED with a cooler lighting temperature won’t just be perceptible, yet may likewise be diverting.
11.) Does the energy reserve funds as well as profit from venture (ROI) make it beneficial at this point?Prepare an energy review utilizing free web adding machines to decide how much cash you will save money on energy and what the possible profit from speculation is. Simply enter your energy rates, the complete wattage of your ordinary lighting and the all out wattage of the LED lighting that you are thinking about and the adding machine will tell you precisely how much cash every innovation will cost you each year.
As may be obvious, each lighting circumstance ought to be thought about separately against the above agenda. Doing so will assist you with deciding LED update designs that fit inside both your financial plan and your assumptions. By and large, LED lighting will keep on working on in both result and productivity consistently like the manner in which the PC market has developed. What could be thought of as a “widely appealing” LED light today, was reasonable viewed as a superior item a little while back. Focusing on your LED lighting buys so the rudiments are covered first and postponing your really exhausting lighting prerequisites as the innovation further develops will guarantee an agreeable progress to days to come lighting innovation.
Sean Crowell laid down a good foundation for himself in the realm of showcasing and publicizing starting in 1991. During his profession he oversaw lofty records including, Chrysler Corporation, Bank of America, JCPenney, Nissan North America and Ford Motor Company. In 2004, he concluded transform his lighting enthusiasm into a business and made Lime Lights and Designs, an organization zeroed in on LED-based lighting arrangements, plan and execution.
Driven LIGHTING BUSINESS
Lime Lights and Designs works in strong and contemporary LED-based lighting. We configuration lighting plans and give extraordinary LED items to organizations, gatherings and exceptional occasions, clubs and home and space proprietors. Reach us today and we should examine dynamic LED lighting for your home, business or unique occasion.
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