extended ISO, "H", 3200?

[manaheim]

That photo taken the circus what was the ISO used, SS and/or aperture?

Thanks.

ISO: 2000
Shutter: 1/80s
Aperture: f4.2


The EXIF program I'm using from my wife's machine reports a 610mm focal length, which I know is wrong since it was a 70-300 lens. It's old and probably confused, but it was certainly at the outer range of the lens... so probably in the 400ish range (Nikon partial frame camera).

An aggressive shutter time for such a long focal length... but as I said, circuses are a BEAR to shoot.

 

[JerryPH]

Standard Information
Make: NIKON CORPORATION
Model: NIKON D300
Software: Adobe Photoshop CS2 Windows
ImageSize: 540x793
CreateDate: 2008:05:06 01:02:54-04:00
ModifyDate: 2008:05:06 01:02:54-04:00
DateTimeOriginal: 2008:05:04 17:16:50.51-04:00
ExposureTime: 1/80"
Aperture: F6.3
MaxAperture: F4.0
CircleOfConfusion: 0.020 mm
HyperfocalDistance: 71.27 m
MeteringMode: Multi-segment
ISO: 2000
WhiteBalance: Custom
FocalLength: 95.0 mm
FocalLength35efl: 95.0 mm (35 mm equivalent: 142.0 mm)
Contrast: +25
Saturation: 0
Sharpness: 25
ApertureValue: 6.3
Brightness: +50
ColorNoiseReduction: 25
CreatorTool: Adobe Photoshop CS2 Windows
Exposure: -0.25
ExposureMode: Manual
FNumber: 6.3
FOV: 14.4 deg
FocalLengthIn35mmFormat: 142
Format: image/jpeg
GainControl: High gain up
LensInfo: 70/1 300/1 4/1 56/10
MaxApertureValue: 4.0
PrimaryPlatform: Microsoft Corporation
ShutterSpeed: 1/80
ShutterSpeedValue: 1/80
Tint: +11
Vibrance: 0

 

[manaheim]

^^ looks like my wife's EXIF info really lied. Aperature was off, too. Odd.

Thanks, Jerry.

Anyway, yeah... high ISO, pretty clear.

 

[passerby]

So jerry man how did you find out all that data in such detail?

And for manaheim. My D40 ISO is from 1600 than to H or 3200. How can I access ISO 2000?

 

[Garbz]

Do you have multiple options for H? The D200 for instance has 1600 H0.3 H0.7 and H1.0 each indicating the stop over 1600. 2000 would be H0.3

Also the detail is available if you save the photo right click click properties and then check out the summary tab.

manaheim I understand the principle. It's exactly the opposite of what happens when you brighten an image. The Gaussian distribution of noise is amplified when you increase the brightness, and attenuated when you decrease it. But the question really is, is dropping the brightness in post by 1 stop going to be better or worse than dropping the ISO by 1 stop. The resulting shutter speeds would be the same.

If this thread is still going next week (when i'm less busy) to remind me, I'll try to test this by shooting a grey card and measuring the noise distribution.

 

[JerryPH]

So jerry man how did you find out all that data in such detail?

And for manaheim. My D40 ISO is from 1600 than to H or 3200. How can I access ISO 2000?

That`s less than 1/2 the info in a pic`s exif. Do a google for KUSO EXIF viewer.

For ISO 2000 which is kind of an off number, you need to have auto ISO turned on.

 

[manaheim]

That`s less than 1/2 the info in a pic`s exif. Do a google for KUSO EXIF viewer.

For ISO 2000 which is kind of an off number, you need to have auto ISO turned on.

On the cam? No, I had it on manual... I've noticed the Nikon D300 has some weird ISO levels... I should look that up to make sure it's correct. The level above 2000 is 2500... also weird.

 

[Helen B]

ISO 2000 and 2500 are the standard third-stop intervals between 1600 and 3200, just as 200 and 250 are the third-stop intervals between 160 and 320 (although in that case 200 is the one on the standard one-stop set).

Best,
Helen

 

[keith204]

Hey Keith, If you get a chance, could you post a comparison of a shot from your 40D @ 3200, and one from your 20D @ "H" Just curiosity really.

The 40D has 6400 as "H" right? I wonder how noise compares between the two "H" settings.

i don't think the 40d has an iso 6400 equivalent, and i think 3200 is the "H" on it

The 40D's H setting is 3200. Canon states that the 40D has better technology to maintain the ISO quality of the 20D/30D while having more megapixels. However, I find that the 40D ISO 1600/3200 exceeds the quality of the 20D's equivalents. I'll take some pictures sometime and show you some tests.

 

[Garbz]

It should be noted that off number ISO can also be generated on most Nikons but setting the custom menu option from 1/3 stop changes in EV to 1/2 stop. But this is more limiting than it is useful.

 

[manaheim]

Is there any reason to be concerned about these off-number steps, like in the same way I would be concerned about using the non-native ones? I'm assuming not, but figured I should check. I'm such a noob when it comes to higher ISOs... I've just never used them much.

 

[Garbz]

No the only reason I can figure they exist is for compatibility with some older zoom lenses.
I have for example seen a lens that was 100-200mm f/2-4.3 which can be a problem at the far end if you need a perfectly consistent exposure. But given that the 1/3rd stops would be 1/5th of a stop off this shouldn't concern anyone. Even if you have an off lens like that.

 

[JustAnEngineer]

Canon states that the 40D has better technology to maintain the ISO quality of the 20D/30D while having more megapixels. However, I find that the 40D ISO 1600/3200 exceeds the quality of the 20D's equivalents.

The 20D isn't included, but take a look at the first comparison shot in this review:
http://www.the-digital-picture.com/Reviews/Canon-EOS-40D-Digital-SLR-Camera-Review.aspx

 

[RyanLilly]

The 20D isn't included, but take a look at the first comparison shot in this review:
http://www.the-digital-picture.com/Reviews/Canon-EOS-40D-Digital-SLR-Camera-Review.aspx

That cool because the 20D and 30D use the same sensor and processing, I think.