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 Post subject: D90 iso 1600 review
PostPosted: Tue Feb 17, 2009 4:48 am 
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Joined: Wed Dec 31, 2008 4:06 am
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Location: Nowhere Wichita, KS
Just wanted to post this, because I knew it performed well, but lets let the pictures speak for themselves.

Nikon d90 w/ 55-200mm VR
JPEG Fine Large
@200mm
iso 1600
1/20 s
F8
Post processing: Re sized image, and nothing else
Image

100% Crop
Image

So what do you guys think? was very impressed since this was a test just to see how high the iso was really tolerable.

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55-200mm VR
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 Post subject:
PostPosted: Tue Feb 17, 2009 8:07 am 
High ISOs are usually fine in good light. That's not how they're normally used though. Could you post a relatively dark scene?


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 Post subject:
PostPosted: Tue Feb 17, 2009 8:15 am 
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Location: UK
Looks good to me. I think that was low light at 1/20s exposure time.

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 Post subject:
PostPosted: Tue Feb 17, 2009 6:56 pm 
Well, pretty much a very normal indoor light level.

1/20s, f/8.0 and ISO1600 translates to 1/40s, f/2.8, ISO400.

And that's quite normal light. :)


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 Post subject:
PostPosted: Tue Feb 17, 2009 7:48 pm 
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Shouldn't 1/20s, f/8.0 ISO1600 translate to 1/640s, f/2.8, ISO400?

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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 Post subject:
PostPosted: Tue Feb 17, 2009 8:07 pm 
not really...

down from f/8 to 2.8 it's 3 stops, down from ISO 1600 to 400 it's 2 stops, so it's 1 stop faster = double the shutter speed. So 1/40s is indeed correct if you ask me ;)


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 Post subject:
PostPosted: Tue Feb 17, 2009 8:18 pm 
Thank you for shared tips.

I am beginner who learn about this understanding exposure.
http://www.google.com/search?um=1&hl=en ... a=N&tab=iw


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 Post subject:
PostPosted: Tue Feb 17, 2009 11:17 pm 
Again to echo what's already been said - this isn't the way to test higher ISO performance. You need low light conditions (usually translating to more shadows in your histogram) to evaluate ISO performance.

I've also got a few questions:

- was VR turned on?
- did you use a tripod?


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 Post subject:
PostPosted: Tue Feb 17, 2009 11:28 pm 
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Doh! I think I was having a bad calculation day earlier. I got the 3 and 2 stop differences, but added them instead of subtracting the reduction when going to lower iso... right numbers, wrong calculation. XD

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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 Post subject:
PostPosted: Wed Feb 18, 2009 3:56 am 
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Joined: Wed Dec 31, 2008 4:06 am
Posts: 147
Location: Nowhere Wichita, KS
Photoj wrote:
Again to echo what's already been said - this isn't the way to test higher ISO performance. You need low light conditions (usually translating to more shadows in your histogram) to evaluate ISO performance.

I've also got a few questions:

- was VR turned on?
- did you use a tripod?


Yes VR was on, and yes it was handheld.

I can definitly add a darker shot, I will try to do the same flower or something similar to keep it even.

I was aware that low light = worse noise, but I wasn't really thinking about how I would not use the camera.

Generally if the light is much worse I would use a lower ISO and longer shutter speed, but for the sake of testing, I will post the other scenario as well.

Thanks for the feedback so far though, glad to know what works for others.

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50mm 1.8
55-200mm VR
ML-L3 Wireless release
SB600

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 Post subject:
PostPosted: Wed Feb 18, 2009 12:21 pm 
popo wrote:
Shouldn't 1/20s, f/8.0 ISO1600 translate to 1/640s, f/2.8, ISO400?

In that case, I don't see why any sports photographer would ever need something like a D3. ;)


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 Post subject:
PostPosted: Wed Feb 18, 2009 7:23 pm 
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Joined: Wed Aug 27, 2008 8:48 am
Posts: 200
If you shoot with iso 1600 in low light you will notice that there is more noise. I own a 450D and I find iso1600 to be unaccepable in lowlight shots. Iso800 is barely cutting it for my standard. I dont own a d90 but I have seen some good iso 800 and iso1600 comparisons and they are both very similar. Unfortunately, both still unacceptable. Fullframe is the only real way to overcome this barrier in my opinion. D3x or even 5d mk2 are both monsters in this department. The difference is almost as much as going from an Ixus to EOS in low light.

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Image
http://www.flickr.com/photos/31510271@N05/


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 Post subject:
PostPosted: Thu Feb 19, 2009 11:20 am 
The D3x is not as good as the 5D2 at high ISOs.


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 Post subject:
PostPosted: Fri Feb 20, 2009 2:29 am 
Even more simply put, the D3X is orientated to the well lit studio environment, and the D3 is the action tool, performing grandly at high ISOs. Not that the D3X can't - it's still better than any DX Nikon. Just not there with the other full framers re:noise handling.

Returning to the review - from personal experience ISO1600 on the D90 is only there for emergencies (when used properly in challenging light conditions). Images are acceptable for web at reduced sizes.


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 Post subject:
PostPosted: Thu Feb 26, 2009 12:26 pm 
I'm a former user of canon 450d/rebel xsi and switched to nikon d90!!

I always read about the excellent iso performance of the d90 and how they compare it to the d300,to tell u the truth,canon's iso 1600 is much cleaner than the nikon's d90!!

that's why i always wondered why they didn't push the iso in canon above that((maybe commercial purposes)).but overall there is a big difference in how both canon and nikon deal with noise.in the end it's a personal preference and though i'm not cmparing similar category cameras (450d and d90) the d90 overall controls r much better!
also with canon,for the price u can't go wrong!!


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