ISO issues with G9

iLumix

Mu-43 Regular
Joined
Jan 30, 2018
Messages
99
Can't figure out why I can't set the ISO above 3200. I have looked everywhere for a setting and nothing comes up.

Also when trying to set the upper ISO for use with auto ISO everything above 3200 is greyed out.

i do not have the camera set for silent shutter.

Can somebody tell me what I have done to screw this up? Thanks.
 

edergira

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Dec 31, 2018
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Do you perhaps have a creative effect filter or multiple exposure switched on? I believe those can limit maximum ISO.
 

manowar

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Jan 4, 2020
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My g9 has very short EV range in post-process.
When I shot the stars @ ISO800 and tried to increase the exposure +2 in post, the strongest noise appeared with mass of hot pixels. Here is example.
So I think acceptable g9's ISO photo range g9 is 200-400...
 

User ID

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Sep 1, 2018
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........ .... .. .... ...... ... ..... .. ... .. .....
So I think acceptable g9's ISO photo range g9 is 200-400...
Yowza .... 200-400 ? My G9 would be loooong gone if
I had problems with noise. ISO 5000 is waaaaay cool !
Don't ask me if I'm blind. Acoarst I can see the noise.
It's really good noise, too. Not crazy blotchy and not
breaking into lines or rectangular zones. If I needed
more noise control, I could open the raw file. This is
just a quick and easy from the camera jpeg ;-)

Clearly your imaging goals differ from mine and that is
not for me to criticize, nor vice versa, But I just wonder
why you don't use a larger format ? The G9 body is as
big as some FF bodies. Only the lenses are smaller.

Here's a pic at ISO5000. Noise, yes. Noise problem, no.

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Last edited:

iLumix

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manowar

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Thanx for your answers!

Last june I set my d750 and g9 for night cross shooting and found an issue that could not deal with. Sometimes tint shifts to purple/blue and lightroom/dxo/silkypics/rawtherapee cant change it. Moreover you can see that effect when brings exposure up to +2 EV

Is it possible to cure it? 3 samples, 2nd has broken color shift
 

Brownie

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The trick is to ETTR when shooting in low light. As long as you don't blow out the highlights you'll get a lot more out of pulling the exposure back than increasing. There's another high ISO thread in here somewhere, don't have time to search right now, but can assure you they are not limited to 800.

As to the purple, etc., don't forget the camera's native ISO is 200. Sometimes shifting to 100 and shooting bright highlights causes odd colors. Magenta is the most common.
 

manowar

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Jan 4, 2020
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So, its better to use high ISO when shooting stars with m4/3 and bring highlights down, then shoot in low ISO and try to cap more dynamic range / bit depth + increase explosure ? I use last method with FF, works good.

G9's magenta happends idk what reason. ISO800, all settings are the same, but result is not..
 

speedy

Mu-43 Hall of Famer
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Nov 27, 2015
Messages
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Offtop: do you enjoy noise @ iso 3200 ???
I don't have any issues with it, even on my older GX8. I think you must be doing something wrong somewhere. The G9 is a little bit better
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This was shot through dirty glass windows
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ISO 1600
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ISO 3200 again
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wjiang

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Sep 7, 2013
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Christchurch, New Zealand
So, its better to use high ISO when shooting stars with m4/3 and bring highlights down, then shoot in low ISO and try to cap more dynamic range / bit depth + increase explosure ? I use last method with FF, works good.

G9's magenta happends idk what reason. ISO800, all settings are the same, but result is not..
Just pushing shadows is easy but it's always the worst way to do things, even for larger formats (even though you might get away with it on a bigger sensor). If done to the extreme, you wil eventually get huge amounts of noise as well as purple/green colour shifts.

Astro is hard - with a smaller sensor you have to be very precise with exposure, and if you want less noise you'll have to use computational techniques such as stacking and dark frame subtraction.

Definitely expose for detail where you need it, with detail in the middle of the histogram - you will then need some combination of pulling highlights and pushing shadows. For Milky Way landscape I'm usually using ISO1600-3200 and exposure stacking 8 to 16 light frames.
 

ooheadsoo

Mu-43 Top Veteran
Joined
Jan 13, 2018
Messages
571
G9 has untenable noise for long exposures, especially visible in astro. If I ever use it for that purpose again, long exposure noise reduction is a must. You may find that some reviewers state that LENR is not necessary. Not my experience at all with astro. Try turning it on.
 
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