7D, ISO:3200 sample picture

jwcdds wrote in post #12684187
And to what purpose might that serve if one doesn't intend to print the photo at 4-feet by 6-feet? Do people actually view photos these days or do people just focus on pixels?

Note that I'm not being picky.. I've owned a 7D for over a year now and I've never complained about noise..

But.. If you shrink a photo that's 5184 pixels wide down to 1024 pixels, you've done a significant amount of post processing on it.. This type of post processing reduces noise.. That's a fact and that's all that I was pointing out. See link below for an example of what I mean:

https://photography-on-the.net …p?p=10756442&po​stcount=13

bohdank wrote in post #12684212
Is NR turned off, in camera ?

I am asking, without comment, on the image you posted.

I just looked in my camera

C.Fn II -1 Long Exposure noise reduction
is set to "0 Off"

C.Fn II -2 High ISO speed noise reduction
is set to "0 Standard"


FYI: C&C always welcome

Jim_T wrote in post #12684319
Note that I'm not being picky.. I've owned a 7D for over a year now and I've never complained about noise..

But.. If you shrink a photo that's 5184 pixels wide down to 1024 pixels, you've done a significant amount of post processing on it.. This type of post processing reduces noise.. That's a fact and that's all that I was pointing out. See link below for an example of what I mean:

https://photography-on-the.net …p?p=10756442&po​stcount=13

No one is disputing that fact. But questions... how do you view your photos? Do you print them? Or do you enlarge them so big that you need to take a mouse to scroll side-to-side just to see the photo?

amfoto1 wrote in post #12684218
That's true, if you want to zoom in closer than you'd ever actually view the image and nitpick about the noise you're bound to find...

Or you can look at the image at a more realistic scale and not see much or any noise.

OP, the "Poor High ISO Performance" threads are ridiculous... 7D images are usable about a stop higher ISO than 40D or 50D... period. 5DII are good for about another full stop on top of that.

People need to make actual prints or look at the images in sizes and resolutions that they'll actually be displayed online, rather than zooming in to 100%. If you magnify any image enough, it will start to fall apart and give you something to whine about in forum postings, if that's what someone really wants to do.

Well Said!
I agree!

jwcdds wrote in post #12684339
No one is disputing that fact. But questions... how do you view your photos? Do you print them? Or do you enlarge them so big that you need to take a mouse to scroll side-to-side just to see the photo?

In this thread, the original poster stated "I had not done any noise reduction, sharpening, or processing at all". I'm just pointing out that he did add noise reduction by the action of shrinking the image...

But since nobody ever uses full sized images and everybody knows that downsampling reduces noise, I guess there's not much point to my post

Oh, I agree that print and/or final image, for web or otherwise, is all that counts.

My rule of thumb is, if I have to do something to reduce the noise in post I have to give something up, not including the extra time it takes. I'd rather not have to do that so accept that I will have to pay more for a camera.

My typical subject matter, and shooting conditions seemed to to bring out the worst in the 7D so I finally sold it.

Jim_T wrote in post #12684145
The best way to show noise is to do a straight crop and post that.

No it's not, the best way to show noise is to underexpose by two stops, switch on ALO, bring the exposure up three stops in post-processing then view the image at 400% on a 1024x768 monitor.

jwcdds wrote in post #12684187
And to what purpose might that serve if one doesn't intend to print the photo at 4-feet by 6-feet? Do people actually view photos these days or do people just focus on pixels?

A lot of people actually view photos, but there are a lot more people in today's world who are pixel peepers.

I say just use the camera. If it makes good photos, that are pleasing to eye, interesting subject matter...but have a tiny bit of noise, because you shot at 3200...who cares? (aside from the pixel peepers).
20 years ago, we shot 1600 film that was so grainy (noisy) but it was acceptable if it was an important pic.
today we have people who whine about noise at 6400 ISO.

I posted this in the 7D sticky thread, but can here as well. Here is a full straight out of camera sweep from all ISOs that came off my old 7D.

http://teamspeed.smugm​ug.com …538_YJfqr#66887​5831_h4YJd

For example the resized ISO 3200

On my 7d's, I can see some rather prominent noise at 3200 ISO when blown up to 100%. It's nasty, really. I often end up cropping quite a bit, and it can be a real problem. 1600 is much better.

hollis_f wrote in post #12687302
No it's not, the best way to show noise is to underexpose by two stops, switch on ALO, bring the exposure up three stops in post-processing then view the image at 400% on a 1024x768 monitor.

LOL love it

MOkoFOko wrote in post #12687398
On my 7d's, I can see some rather prominent noise at 3200 ISO when blown up to 100%.

Er, try not blowing up to 100%.

Here's an image at ISO6400 -

^^^ Pixel-peeper, guilty as charged I do end with some rather heavy cropping when birding. It's unfortunate, but I tend to end up with a disproportionate number of low-light outdoor shots (usually near sunset). The higher ISOs simply can't be avoided--same goes for cropping

I use LR3 myself, but there are real limits, as you've shown. Comparing 100% shots at 100 vs 3200 ISO, I can only grimace a bit everytime I dial the ISO to 1250+ on my 7D. Wish it was more in line with the 5d2 (especially for video!), but you get what you pay for. I bought the 7D for the AF system--not high-ISO quality. The 7D is still a value-king, but the ISO really is the most obvious thing to complain about--so I threw in my 2 cents, that's all

On the other hand if you turn up the magnification so high that only one pixel fits on the screen you won't see any noise at all - problem solved!

MOkoFOko wrote in post #12687543
^^^ Pixel-peeper, guilty as charged I do end with some rather heavy cropping when birding. It's unfortunate, but I tend to end up with a disproportionate number of low-light outdoor shots (usually near sunset). The higher ISOs simply can't be avoided--same goes for cropping

I use LR3 myself, but there are real limits, as you've shown. Comparing 100% shots at 100 vs 3200 ISO, I can only grimace a bit everytime I dial the ISO to 1250+ on my 7D. Wish it was more in line with the 5d2 (especially for video!), but you get what you pay for. I bought the 7D for the AF system--not high-ISO quality. The 7D is still a value-king, but the ISO really is the most obvious thing to complain about--so I threw in my 2 cents, that's all

I have the 400D, 50D and 7D and find they are all excellent machines. The 7D High noise capability is also excellent. Here is an ISO3200 sample and 100% crop, shot with the EF-85 f1.8, at f2.8 1/40sec (using a tripod). Processed with LR 3.4.1

Miguel

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