You've seen that Adobe are adding 0.35 EV lightness to raw files from your camera to compensate. You've seen that if a scene contains a significant patch of saturated colour (red, for example) the histogram shows clipping where there is none.
You've seen that Adobe are adding 0.35 EV lightness to raw files from your camera to compensate. You've seen that if a scene contains a significant patch of saturated colour (red, for example) the histogram shows clipping where there is none.
@IliahBorg has written: @DonaldB has written:you need to rework those tests
Jim is correct.
not unless i see images of the rear LCD screens and raw histogram im not convinced.
That you can do, see those screens and raw histograms. Actually, you did, but you are not paying attention.
@JimKasson has written: @DannoLeftForums has written:So in the future if I posted something like "....contemporary camera meters are calibrated to output ~12.5% grey image lightness....", would you be comfortable with that?
Sounds more cut and dried than it is. Maybe Iliah could give you a range.
OM-1 is calibrated to less than 7%, that's slightly less than 4 stops down from clipping.
ok, thank you 🙂 I didn't realise there was such a large range in the calibration of camera meters.
At this stage I think I'll go with:
"....contemporary camera meters are calibrated to output a firmware set image lightness...."
Would you be comfortable with that if you saw it in my posts?
@DonaldB has written: @IliahBorg has written: @DonaldB has written:olympus xz1
That's one of the very few cameras that are calibrated in raw close to the standard.
Funny that you should say that. because the exposure settings on that camera were always different than any other camera i owned. now i will compare it to my a74.
just did the test and the A74 and XZ1 histograms maxed out showed the identical exposure. thats awesome. the olympus playback RGB histogram is unbelevabley detailed.
1/15 f/3.2 vs. 1/15 f/3.2+1. What's that +1?
@JimKasson has written: @DonaldB has written:where is everyone getting the idea that incamera histograms are not acurate ?
In my case, from testing. Here are a few of the cameras I've tested: Sony a7, a7II, a7III, a7R, a7RII, a7RIII, a7RIV, a7S, a7SII, a9, a9II. Nikon D3, D4, D5, D800, D810, D850, Z6, Z7, Z9. Fuji GFX 50S, GFX 50R, GFX 100, GFX 100S.
seriously Jim, i think you need to rework those tests.
1/20 on FastRawViewer screenshot, 1/25 on the LCD. Interesting.
"....contemporary camera meters are calibrated to output a firmware set image lightness...."
I think the notion that the calibration of the meters is guided by what the manufacturer wants it to be (and depends on what results in what they think is acceptable image quality) can be made more clear. Same camera may have different calibration for different ISO settings. It's all about what the manufacturer thinks is good enough output.
@DonaldB has written: @JimKasson has written: @DonaldB has written:where is everyone getting the idea that incamera histograms are not acurate ?
In my case, from testing. Here are a few of the cameras I've tested: Sony a7, a7II, a7III, a7R, a7RII, a7RIII, a7RIV, a7S, a7SII, a9, a9II. Nikon D3, D4, D5, D800, D810, D850, Z6, Z7, Z9. Fuji GFX 50S, GFX 50R, GFX 100, GFX 100S.
seriously Jim, i think you need to rework those tests.
1/20 on FastRawViewer screenshot, 1/25 on the LCD. Interesting.
good catch. have no idea will have to look into that.
@DonaldB has written: @DonaldB has written: @IliahBorg has written: @DonaldB has written:olympus xz1
That's one of the very few cameras that are calibrated in raw close to the standard.
Funny that you should say that. because the exposure settings on that camera were always different than any other camera i owned. now i will compare it to my a74.
just did the test and the A74 and XZ1 histograms maxed out showed the identical exposure. thats awesome. the olympus playback RGB histogram is unbelevabley detailed.
1/15 f/3.2 vs. 1/15 f/3.2+1. What's that +1?
will check it out.
checked it out thats just the over exposure amount form the cameras normal exposure, its not a correction.
@DannoLeftForums has written:"....contemporary camera meters are calibrated to output a firmware set image lightness...."
I think the notion that the calibration of the meters is guided by what the manufacturer wants it to be (and depends on what results in what they think is acceptable image quality) can be made more clear. Same camera may have different calibration for different ISO settings. It's all about what the manufacturer thinks is good enough output.
Ok. Now what Jim said about evaluative/matrix metering makes sense to me now.
So, I'll simplify my proposed comment even more by going with something like:
"....contemporary camera meters are calibrated to output their manufacturers' set image lightness...."
which should cover all bases, hopefully 🙂
Would you and Jim be comfortable with that if you saw it in my posts?
On a side note:
BBcode, like HTML tags, have no forward slash "/" in the opening tags. The closing tags have a forward slash.
Also, opening/closing tag pairs need to match otherwise you end up with "ugly" looking posts with messed up code being displayed.
In your above post, all you need to do is delete the forward slash in the opening quote tag.
awesome thanks for that, i hope i can remember for the next time.
No problem.
I've sold all my Sony cameras.
Why? "What are you on now?", please?
Jim is shooting MF Hasselblad.
ok, thank you 🙂 I didn't realise there was such a large range in the calibration of camera meters.
0.1 EV - not a huge tolerance.
@DannoLeftForums has written:ok, thank you 🙂 I didn't realise there was such a large range in the calibration of camera meters.
0.1 EV - not a huge tolerance.
I'm not sure which tolerance you are referring to.
I was referring to the 18% grey I originally mentioned and Jim's ~12.5% and Iliah's 7%.
@bobn2 has written: @DannoLeftForums has written:ok, thank you 🙂 I didn't realise there was such a large range in the calibration of camera meters.
0.1 EV - not a huge tolerance.
I'm not sure which tolerance you are referring to.
I was referring to the 18% grey I originally mentioned and Jim's ~12.5% and Iliah's 7%.
some go to 22%