Podcast Episode

The Lensrentals Podcast Episode #59 – Ask Lensrentals: Oops! All Video

Published June 9, 2022

Each week Roger Cicala, founder of Lensrentals.com, hosts conversations about the art and science of capturing images. From photography to videography, film, history, and technology, the show covers a wide range of topics to educate and inspire creators of all kinds.

Ask Lensrentals: Oops! All Video

Much like the ongoing production error at the Captain Crunch factory, causing them to overproduce berries, this episode is entitled ‘Oops! All Video’. Enjoy as video experts Ryan, Ally, and Dom sit down and answer all of your video-centric questions, from the importance of reliable memory, to whether you should even bother shooting in video RAW.

Are you looking into buying a camera for video, or just wanted a camera that does both still and video well? Do you have some questions regarding your first day on a video set? Well then, this is the podcast for you, where all these questions and more are tackled by our video experts.

Gear Mentioned In this Episode:


0:25 – Ryan welcomes Ally and Dom. This week’s episode is all video-related listener questions
1:20 – First question: why is the cost of memory rental so high?
2:00 – Ally notes that memory is one of the most important pieces of gear on any shoot, so it’s probably not worth skimping on a brand name. Better to just shoot formats and resolutions that are available on cheaper media like SD cards.
5:00 – Economy of scale means that any popular media format will eventually get cheaper as it’s adopted more widely.
5:30 – Second question: When should I switch from a hybrid photo/video camera like the A7S III to a dedicated video camera like the FX6, and what are the benefits of switching.
6:00 – Ryan recommends switching as soon as you start recording audio in any serious way.
6:30 – Dedicated video cameras are going to be much more easily compatible with accessories such as microphones and monitors.
7:15 – Ally thinks an underrated benefit of switching to a dedicated video camera is more physical buttons and better support for user customization.
10:45 – Third question: As a beginner videographer, I’m confused about exactly what RAW means and when I should use it. When is it worth it to shoot RAW?
11:45 – Ryan notes that the idea of not shooting RAW, of allowing compression of your footage, might be anathema to people coming from the world of photo where RAW is the default. In the case of video, though, compressed video is far easier to work with and in most cases, no useful data is lost.
13:00 – This is a complicated and worthwhile discussion, but our basic recommendation is this: if you’re not color correcting at all or doing your own basic color correction, compressed video like 10-bit 4:2:2 is probably your best bet. If you’re hiring a professional colorist or doing serious VFX work, then it’s time to think about shooting RAW.
16:00 – Break
17:00 – Fourth question: can you explain dual gain sensors? What are the benefits and are there any downsides?
17:45 – The first thing we have to clarify is that dual gain sensors and dual native ISO sensors are two different technologies. These terms are often used interchangeably, but there are important differences between the two.
18:25 – Dom explains what a dual native ISO sensor is. This is basically a sensor with two separate amplifiers per photosite, meaning the camera can, on-demand, raise its base sensitivity to light. Those two amplifiers effectively give the camera two “native” ISO levels where the sensor performs best in terms of noise and dynamic range.
23:00 – Ally explains some situations in which a dual native ISO can be especially helpful, mainly documentary-style work where the team might not have complete control over lighting conditions.
25:00 – Ryan explains what a dual gain sensor is. This is a sensor on which every image is processed at two separate gain levels, one that prioritizes highlights and one that prioritizes shadows, similar to the process of capturing HDR images with a still camera. These two gain outputs are then combined by the camera processor into a single final image with an extremely wide dynamic range. This differs from dual native ISO in that it’s an automated background process, not the user needs to make.
27:05 – Last question: what do I need to know before my first day on a professional set?
27:20 – The most important piece of advice is to make sure you get and read the call sheet.
28:45 – Something Ryan wishes someone would’ve told him ahead of his first job was that it’s very important to know your job and only do that job. Coming from a student or independent productions, you may be used to wearing a lot of hats and helping out wherever you’re needed. On a professional union set, though, it’ll be a problem if you, as a production assistant, move a light stand or touch a cable, even if you’re just trying to help. Let the appropriate departments do what they’re there to do.
30:40 – The other side of that coin is that, while you shouldn’t do anything that isn’t asked of you, you should be immediately ready to do anything that is asked of you. Have pens, tape, etc. on hand so you’re ready to spring into action as soon as a task comes up.
34:50 – Thanks for listening! On the next episode of The Lensrentals Podcast we’ll be answering photo listener questions.

The Lensrentals Podcast is a production of Lensrentals, founded by Roger Cicala. Our production staff includes Drew Cicala, Ryan Hill, Sarah McAlexander, Julian Harper, John Tucker, and Zach Sutton. Other contributors include Roger Cicala, Joey Miller, Ally Aycock Patterson, Joshua Richardson, and Philip Robertson.

Thanks to Jacques Granger for our theme song.

Submit a topic idea, question, or comment, leave us a voicemail at 901-609-LENS, or send us an email at podcast@lensrentals.com.


Author: Lensrentals

Articles written by the entire editorial and technical staff at LensRentals.com. These articles are for when there is more than one author for the entire post, and are written as a community effort.

Posted in Podcast Episode
  • Athanasius Kirchner

    I realize you didn’t want to use even more time discussing this subject, as it’s quite dry and took a while already. I just wish you’d have mentioned the other use of ‘dual gain’, because I was thoroughly confused listening to the podcast, and had to wait until I got home to read up on what Canon and ARRI are doing. So, in a way, the explanation only muddied the waters further for me. Anyway, thanks for taking the time to reply.

  • Ryan Hill

    I feel like we covered this as well as possible without making the episode entirely about this one topic. We noted in the discussion that these are two distinctly different technologies, described how they work, and noted that manufacturers will often use different terminology to describe them. Getting into the precise definitions and wording that every manufacturer uses would, in my opinion, muddy the waters and not be very interesting to listen to. For example, Sony’s documentation (at least in the manuals for their recent video cameras like the FX9 and Venice) refer to this as “dual base ISO,” not “dual gain.”

    Sorry we didn’t cover Sony specifically enough to note that difference, but, again, I think we covered the basic point (what the two technologies are and that it’s important to research which one the camera you’re shooting with uses) without taking unnecessary time listing the exact approach that every camera manufacturer takes. Thanks for listening!

  • Athanasius Kirchner

    The episode was mostly good, but your explanation of dual gain and dual native ISO was worse than keeping quiet. You should’ve clarified that there’s two things called ‘dual gain’; one is the Canon/ARRI software approach, just like you said, and the other is the Sony sensor implementation. The latter works almost the same as Panasonic’s dual gain ISO; it’s a hardware application that involves special circuitry leading to and fro the main building AI.

    Anyway, it was again a disappointing performance from the LR staff. You should really refresh your technical knowledge off-air before embarking on rants like these.

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