GH5 100 ASA or 400 ASA in sunny days - video?

FoxAdriano said:
But do all you refer to photography or video? I refer only to the video.
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In video mode the GH5 only shoots about 6 stops of dynamic range at 100 extended ISO. As DXO shows it's 13 stops in RAW stills mode at ISO 100. Stills and video are apples and oranges for dynamic range at extended ISO 100.

As is always appropriate, do your own tests. I think you'll clearly see that extended 100 ISO in video mode completely blows all whites and highlights beyond repair.

Cheers,
Pete
 
Stills and video and v-log/Hybrid log and cine-d/other profiles are all different.

The lowest iso on all of them is the best. So 100 stills, 400 vlog, and 200 other profiles.

The thing that messes with dynamic range is the "extended iso setting" don't mess with it and you are golden. Of course it may come in use in some situations. But outside you in bright situations you usually need better dynamic range. So the increased highlight clipping in extended ISO may take away from any benefit you get from going down to 200 iso.
 
If I understand well, in every situation, even in strong daylight, it is always better to use 400 ISO for shooting video (I don't make photos). Do I understand well with my bad english?
 
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FoxAdriano said:
If I understand well in every situation, even with strong daylight, it is always better to use 400 ISO for shooting video (I don't make photos). Do I understand well with my bad english?
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You need to understand that even though your shooting in daylight, it doesn’t mean that dynamic range is less important. I think you need to fully understand how high/low dynamic affects your image.
 
I was replying to dvbrother "200 ISO is considered a base ISO and you will not suffer a loss of dynamic range when using it". Who is right? I don't understand.
 
FoxAdriano said:
If I understand well, in every situation, even in strong daylight, it is always better to use 400 ISO for shooting video (I don't make photos). Do I understand well with my bad english?
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While using 400 ISO in non-LOG profiles is acceptable for shooting video on sunny days, 200 ISO will have less noise and the same dynamic range as 400 ISO.
 
FoxAdriano said:
Who is right?
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You are right.....

When you've seen with your own eyes and you are happy with the results.

Test, follow your instincts, take advice as guides, not gospels.

If you want my opinion, stay as close to 200 as conditions allow, but use anything up to 1600 if you need to. Personally I will go beyond that if I have to get a shot I can't live without.

In the end it is all about compromises. Do what you need to do.

But for goodness sake, do your own tests. Daily.
 
Here's a test you can do: Go outside on a clear sunny day, point the GH5 at an object or a building that has a solid and consistent color (or if you have a gray card, use that). Fill the frame with it. Set the camera to 200 ISO. Adjust your exposure until the meter reads +/- zero on the exposure meter. Set your zebras to 100 IRE. Increase the exposure by opening up the aperture and/or lowering your shutter speed. When the zebras show up on the image, clipping is occurring. Note how many stops above your original proper exposure this is. This is your highlight headroom at 200 ISO.

Do the exact same steps at 400 ISO. See if you get different result.

Do this at 100 ISO, see if you get different results.

This will help determine the highlight headroom at different ISOs. And will also help you know about how much latitude you have when exposing the camera before clipping occurs.

(This is for non-LOG profiles.)
 
You are very kind, I thank you for your suggestions. I will do a try but I'm afraid I'm not able to do it. I'm not expert about WB, in all my live I used the preset. ;) But I will try. Thanks again one.
 
Friends, I've done a lot of tests, shooting in many ways and I've just come home to evaluate them with a good big monitor. Here are my mental results. Maybe they will be wrong but I say this: I haven't used any filter and the best results in absolute I had them in manual choosing 100 ASA and an aperture between f5.6 and f11 (f11 is the maximum limit to get good images). In my opinion is better open more the diaphragm maybe speeding the shutter (1/320) that close the diaphragm (f16) with a slower shutter speed maybe at 1/100. I've been in the countryside, the day was good with sun and clouds. I filmed landscapes in 4K with lots of green and yellow ripe wheat. What surprised me was the fact that with F5.6, 1/100, with 100 ASA I needed an ND filter. But can it be? It seems a bit 'strange because I was not at the beach and the day was not very sunny.
I will go to Africa but I always brought the videocamera with me. The GH5 is a completely new thing that makes me anxious. We hope well. I don't go to visit the african cities, they don't interest me. I'm interested in people.
A consideration I have to do: in this forum I learned a lot, especially the fact of trying on the field the advice all you have given me.
 
cheetah.jpg


FoxAdriano,
I fear that you're probably doing yourself a disservice shooting at ISO 100. You're definitely going to lose significant dynamic range, and that's very important to keep when shooting people under harsh sunlight. The image above was shot at ISO 400/f8, shutter 180º with a variable ND filter in BRIGHT Kenyan sun.

- The shutter speeds you list above are too fast to yield natural looking motion. I suggest you change your shutter display to "angle" instead, and keep it close to 180º. (Notice how the cheetah's tail is blurring? This is good.)
- A variable ND filter is absolutely your best friend when shooting in the sun. It will allow you to keep ISO, aperture and shutter angle where you want them, and still control the exposure.
 
Joe, your pic is wonderful. Thanks for your precious news. It is new to me to shoot with a fotocamera 4K videos and I'd like to ask some questions please. If I shoot in 50p and I use a ND variable filter, how much the shutter speeds has to be? Have they to be between 1/50 and 1/100? And the Aperture? Is is OK between f5.6 and f11?
I make an error when I purchased a fixed ND filter. Now I understand I need a variable ND filter.
Could you suggest a good variable ND filter?
If someone use a GH5 with lens hood, can you tell me if it is hard to turn the filter? I'm worried the lens hood could bother a lot because I have to make fast shooting.
Thanks
 
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I assume we are talking video here not photography.

For the highest dynamic range you need to shoot in v-log or HLG and that requires a minimum of 400 ISO.
 
FoxAdriana,

- My apologies, I assumed you were shooting 24P. If you are shooting 50P, then 1/100 shutter speed is fine. (I still recommend you change your setting to display shutter angle instead of shutter speed because if you do so, the camera calculates the correct speed, no matter your frame rate.)

- My personal favorite variable ND is this one: https://syrp.co.nz/products/filter but there are many other good ones.

- May I ask why you are shooting 50P if your desire is to film "people"? (By people, I assume you mean documentary style.) The reason I ask is because high frame rates tend to yield a "news" or "soap opera" look that many people subconsciously equate with "cheap video." 24P or 25P tends to hide minor imperfections and generally is subconsciously equated with "quality."
 
Always set your shutter at twice your frame rate. So for 50p 100 shutter, for 24p 50 shutter. Definitely get an ND filter, variable is best for quick shooting.
 
joe12south said:
- (I still recommend you change your setting to display shutter angle instead of shutter speed because if you do so, the camera calculates the correct speed, no matter your frame rate.)
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Sorry to disturb you so much with my inexperience about my new camera. But what do you mean with that writing? I'm telling you I shoot in 400 ASA, 50p, 1/100 and f8 or f11. Isn't all that the right setting display shutter angle? Or what would I do precisely please to set the GH5 better?

joe12south said:
- May I ask why you are shooting 50P if your desire is to film "people"? (By people, I assume you mean documentary style.) The reason I ask is because high frame rates tend to yield a "news" or "soap opera" look that many people subconsciously equate with "cheap video." 24P or 25P tends to hide minor imperfections and generally is subconsciously equated with "quality."
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Good question ahaha. I shoot in 50p only because I film indigenous people around the world and they often are are immobile or with slow movements in their huts but sometimes they run or cut the wood and I have to follow and run after them with my camera in my hands or to hunt with them. If I have to be sincere I don't know if 50p is the right framerate. Then I use very little a tripod and I think shooting in 25p could create some problems with flickering of the image. Repeat, for me GH5 is new to me and I hope to set my camera in the right way.

PS: I'd like to buy that Syrp variable ND filter. My lens is Leica 12-60 62mm. In your opinion could I buy the ND filter with the same screw, that is 62mm or is it better to buy a larger ND filter and also an adapter ring?
 
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FoxAdriano said:
Sorry to disturb you so much with my inexperience about my new camera. But what do you mean with that writing? I'm telling you I shoot in 400 ASA, 50p, 1/100 and f8 or f11. Isn't all that the right setting display shutter angle? Or what would I do precisely please to set the GH5 better?
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No worries. Relevant information here: http://eng-ca.faq.panasonic.com/app...tings-for-shutter-speed,-angle,-iso-&-gain.--

Good question ahaha. I shoot in 50p only because I film indigenous people around the world and they often are are immobile or with slow movements in their huts but sometimes they run or cut the wood and I have to follow and run after them with my camera in my hands or to hunt with them. If I have to be sincere I don't know if 50p is the right framerate. Then I use very little a tripod and I think shooting in 25p could create some problems with flickering of the image. Repeat, for me GH5 is new to me and I hope to set my camera in the right way.
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I don't think one or the other will necessarily do better with "flicker" - it's a matter of personal preference. Which "look" to the motion do you prefer. Most people still prefer 24/25 fps (movies/documentaries) to 50/60 fps (news/sports/soap operas)

PS: I'd like to buy that Syrp variable ND filter. My lens is Leica 12-60 62mm. In your opinion could I buy the ND filter with the same screw, that is 62mm or is it better to buy a larger ND filter and also an adapter ring?[/QUOTE]
I'd buy the larger and an adapter, that way if you get a new lens with a bigger filter thread, it will still work.
 
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