Panasonic S1 issue: Video changes aperture - HELP

Started 5 months ago | Questions
S1shooter Forum Member • Posts: 84
Panasonic S1 issue: Video changes aperture - HELP

Hi everyone!
I've been enjoying my S1 quite a bit, using it mostly for photography. Recently I've been using it more for videography and I find that when I open my modern lenses fully, it auto adjusts the aperture which ruins the Shallow depth of field look I'm going for. For example, I was trying to shoot some video of tree leaves lit by sunlight with my Canon USM L f1.2 fully open and the video auto changed it to f2.2 and totally ruined the effect I was going for.

In the past I've used it for videography with older manual lenses that are even faster, like my Dream Lens fully open, and never had this issue. I've tried adjusting settings and had no luck. I'd appreciate any suggestions you can offer.

Thanks!

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NickZ2016 Veteran Member • Posts: 5,368
Re: Panasonic S1 issue: Video changes aperture - HELP
2

I don't use an S1 but that sounds like an exposure issue. What mode was the camera in? How strong a ND filter did you have?

Video you should normally be in manual mode. If you aren't the camera is going to try and "fix" things it sees being wrong. Even F/2 during the day is pretty challenging without a strong ND.

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OP S1shooter Forum Member • Posts: 84
Re: Panasonic S1 issue: Video changes aperture - HELP

Thanks for getting back.

The camera is in C3 mode. I bought it from a great videographer, and I'm pretty sure I've used it wide open to shoot video with modern lenses and not had this problem on C3 before. Maybe I did something to mess with it or I'm remembering wrong. Anyways, his C3 customizations are amazing for photography, I never have to adjust for exposure or shutter speed or anything in whatever lighting conditions.

Anyways, your thoughts are appreciated.

Off The Mark Veteran Member • Posts: 6,452
Re: Panasonic S1 issue: Video changes aperture - HELP

S1shooter wrote:

Thanks for getting back.

The camera is in C3 mode. I bought it from a great videographer, and I'm pretty sure I've used it wide open to shoot video with modern lenses and not had this problem on C3 before. Maybe I did something to mess with it or I'm remembering wrong. Anyways, his C3 customizations are amazing for photography, I never have to adjust for exposure or shutter speed or anything in whatever lighting conditions.

Anyways, your thoughts are appreciated.

Well... since C3 stands for Custom Setting 3, you are basically going to need to look at ALL of the settings that he set up.

My guess is that he either has auto aperture set up, and it is changing the aperture (stopping it down).

If you are in C3 mode, and then you go in to the menu, are BOTH the Video Settings AND the Photo Settings available? If so, then it is probably more difficult for you to fine tune all the video settings to your liking.

On the S1 (and S5) there is a mode setting for Video settings. Generally that gives you more options and it allows you to use different setting in video than those in photo mode.

You might want to watch through this video (demonstrated on the S5, but the s1 is VERY similar, especially if it has the V-LOG update).

https://youtu.be/Z7CxuiitTO4

And here is another video as well on setting up the S5 for video:

https://youtu.be/FwXEzWp-_ys

Hopefully these will help to get you familiar with some of the video settings.

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Off The Mark Veteran Member • Posts: 6,452
Re: Panasonic S1 issue: Video changes aperture - HELP
2

NickZ2016 wrote:

Video you should normally be in manual mode. If you aren't the camera is going to try and "fix" things it sees being wrong. Even F/2 during the day is pretty challenging without a strong ND.

Agreed, this is best if it is doable.

To the original poster, S1shooter, I know it might sound daunting but in the end, shooting manually and having an ND filter is going to make it easier to get great exposure and shallow depth of field when shooting in bright daylight.

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OP S1shooter Forum Member • Posts: 84
Re: Panasonic S1 issue: Video changes aperture - HELP

I think this is probably the way to go as well. And it does seem daunting. Any advice on tutorials or places to start?

Thanks!

OP S1shooter Forum Member • Posts: 84
Re: Panasonic S1 issue: Video changes aperture - HELP

Thanks for the detailed response, and the tutorials.

I can change some of the settings, and I'll look more into that, but something I've noticed just in my prior attempts to do so is that certain features are darked out and can't be changed.

I do have the VLOG 10 bit update, but I have to shoot in .MOV to use it. I'm assuming .MOV is similar to RAW on a Blackmagic, but takes up less space.

Just can't figure out why this was never an issue before, and why it isn't an issue when I take photos (in C3 mode btw) and just suddenly becomes one when I turn video on.

its_a_knife Regular Member • Posts: 128
Re: Panasonic S1 issue: Video changes aperture - HELP

I think it depends on your budget. You can try getting ND that screws onto the front of your favorite lens. You can also get a matte box with nd filters to slip in. The first choice is the photographer approach where the second is the more videographer like approach.

You can never go wrong with potato jet. It's an old video but I think it still applies.

https://www.youtube.com/watch?v=AbuynZ_BhUI

Off The Mark Veteran Member • Posts: 6,452
Re: Panasonic S1 issue: Video changes aperture - HELP

S1shooter wrote:

Thanks for the detailed response, and the tutorials.

You are welcome.

I can change some of the settings, and I'll look more into that, but something I've noticed just in my prior attempts to do so is that certain features are darked out and can't be changed.

I do have the VLOG 10 bit update, but I have to shoot in .MOV to use it. I'm assuming .MOV is similar to RAW on a Blackmagic, but takes up less space.

Yes, Panasonic is a bit weird in that some of the features are available when shooting in .mov form at and some only when shooting .mp4 format. I don't really like the way they implement it.

An oversimplification: .mov is just the format of the file. On the S1, you get a ton of picture profiles, such as CineD, CineV, Standard, Vivid, Portrait, Like709, HLG and V-LOG.

The V-LOG and HLG profiles give you the most dynamic range. They actually give you MORE dynamic range than most standard screens can show. Newer tv's and monitors with High Dynamic Range (HDR) can show all that dynamic range (in theory).

V-LOG is also less-saturated than the other profiles. This gives you FLEXIBILITY if you want to change the exposure and color in post.

Just can't figure out why this was never an issue before, and why it isn't an issue when I take photos (in C3 mode btw) and just suddenly becomes one when I turn video on.

We will need to know what your settings are in C3.

Also, when you say, "when I turn video on," do you mean actually rotating the dial to the movie icon? Or do you mean staying in the C3 setting and just pressing the red record button?

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