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FORUMS Photography Talk by Genre General Photography Talk 
Thread started 30 Jan 2014 (Thursday) 14:48
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Quick question about ISO

 
jt354
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Jan 30, 2014 16:12 |  #16

I'm a pixel peeper and generally use the lowest ISO I possibly can. I start to notice a bit of noise at ISO 400 in decent lighting and I won't go above 1600 unless absolutely necessary. This is on the 60D of course, on my G12 I cringe at ISO 800 shots. Wish I had a full-frame camera!


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Jan 30, 2014 16:17 |  #17

gjl711 wrote in post #16650806 (external link)
Not a big fan of LR but do most of my processing with PS. I tend to use noise reduction sparingly and where needed that way I can control the image much better. Same with sharpening.

me too. Not sure how this relates in Ps nomenclature, but in Lr I usually only NR when absolutely necessary, and at a max I do like 25-30. Sharpening gets masked all the time, again at a max of 45.

I dont mind noise, unless it is just a poor exposure. Even at that point I will just scrap the image vs trying to half ass it with heavy handed sharpening.noise reduction. hell, poorly exposed images at ISO6400 often looks better than many of my 120 film negitives


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Jan 30, 2014 19:48 |  #18

I typically wouldn't use any of the Hx modes as they aren't of much use.


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Snydremark
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Jan 30, 2014 19:55 |  #19

On the 7D, I'll go to 6400 if the shot calls for it; on the 6D, I'd pretty much go until you run out (or maybe a stop below that). 400-800 should be a total non-issue, assuming your exposure is correct to begin with.


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deanedward
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Jan 30, 2014 21:31 |  #20

for my 6D, I limit myself to 12,800. On my 60D, I limit myself to 3200 except in extreme situations when I really need a faster shutter speed to freeze motion/avoid camera shake...I go up to 6400.


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Jan 30, 2014 21:41 |  #21

How high ISO I would go depends really on the situation and the camera body I was using.

With my crop 60D, for serious work where quality actually matters I would not go above ISO 1,600 no matter what.
That said, I would try my best not to go above ISO 800 with crop, even when shooting in a completely dark environment. I would just use a flash and keep ISO at 800 tops.

Even when shooting for fun, I would still not go above ISO 3,200 with my 60D as crop sensors look downward ugly above 3,200, (current generation at least) and even then its stretching it :p
The only time I would use ISO 6,400 would be if I was stuck with no flash and it was the only way to not get motion blur.


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Jan 30, 2014 21:48 |  #22

On the 7D, I would shoot 3200 all the time, never had an issue, and it was as clean (or cleaner) than the 5DI. It's interesting to see different perspectives. :)

IMAGE: http://teamspeed.smugmug.com/Church-and-Family/The-Kids/i-6RHwrgW/0/X2/IMG_2195-X2.jpg

IMAGE: http://teamspeed.smugmug.com/Church-and-Family/The-Kids/i-J6cvHqN/0/X2/IMG_6431-X2.jpg

I was known to shoot at ISO 12800 too a few times.

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Jan 30, 2014 22:18 |  #23

While I always seek as low and iso as I can, I tested out some handheld shots with my 6D at iso 12,600 with fast shutter for fun, but the quality was off.
I do much of my shoots handheld, I set my auto iso limit at 3200 in the AV, TV, and user modes.
This can be quickly changes on the 6D by selecting non-auto iso's. You are well within the 'limits' and PP helps to correct noise when needed.


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Jan 30, 2014 22:53 |  #24

This is a screenshot at 1:1 from Darktable (the Linux equivalent to LR) that I use. In the left is the untreated RAW, in the right is the NR'd. I believe the detail is satisfactory.

ISO 12800

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ISO12800 for the 60D is a software in camera ISO, not the best...

The Ibuprophen picture is my standard for high ISO NR, because it is under my desk (low light conditions) and the white cap looses detail very quickly if you are ham-handed....

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Jan 30, 2014 22:58 |  #25

^ Wow that side by side comparison is insane. Great information so far, thanks everyone.
I noticed one thing while trying out NIK though. On a photo of a bird, after reducing the noise, the feathers were pretty soft edged. And the feathers within the wings were losing a lot of detail and it looked like the interior feathers on the wings were becoming very flat (no definition). Is that normal?

Is there a way to reduce the noise throughout the photo without losing the details in detailed areas?


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Jan 30, 2014 23:07 |  #26

Look 4 posts above at Teamspeed's signature. Click the link for his mini-reviews and open the one about noise reduction on the 7D.

You will see the basics on ETTR (Exposure To The Right). That's what got me started. :)

You are right about applying heavy NR losing the detail. ETTR helps keep the NR light(er) maintaining detail. That's why you can read the label in the Ibuprophen bottle.


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Jan 31, 2014 01:27 |  #27

JM Photos wrote in post #16650610 (external link)
I'm just wondering if there is a cap that you use when bumping the ISO.
Is there a specific ISO that you will not use no matter how bad it's needed?

I just want to know because I don't want to sacrifice image quality for light. I understand that every bump in ISO degrades the image more and more, but sometimes it's needed.

I was shooting a field of snow geese today and to get the desired shutter speed, I had to bump the ISO up to between 600 and 800. Are those numbers up towards your cap or would you go higher without hesitation?

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On my 60D an ISO of 6400 is way too noisy in most situations. ISO 3200 is still pretty noisy, but much less so and can be fairly effectively cleaned up in post. As a general rule I try not to exceed 1600, and prefer staying under 1000 if I can. Based on my experiences with my friend's 70D, I could safely double all the ISO speeds I mentioned above. The 70D's ISO is between one and two stops better than the 60D. In fact, an ISO of 6400 on the 70D gives results that look almost as good as 1600 on the 60D. Actually quite amazing! The 70D's ISO at 12800 was noisy, but much less so than the 60D's 6400. A lens at f/1.4 with an ISO of 6400 or 12800 would allow you to capture images in extremely low light.


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Jan 31, 2014 02:12 |  #28

I shoot whatever ISO I need to get the shot I want. If that means pumping it up to it's max, I do it. I will say that I generally don't go past the camera's native limit, but I have several shots on my flicker with my 6D above ISO12,800 that I'm super happy I didn't limit my ISO. Pixel peeping is pointless imo, it's something I'll never understand... except for maybe a product or fashion photographer who's printing large highly detailed prints.


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Jan 31, 2014 02:57 |  #29

mwsilver wrote in post #16651915 (external link)
On my 60D an ISO of 6400 is way too noisy in most situations. ISO 3200 is still pretty noisy, but much less so and can be fairly effectively cleaned up in post. As a general rule I try not to exceed 1600, and prefer staying under 1000 if I can. Based on my experiences with my friend's 70D, I could safely double all the ISO speeds I mentioned above. The 70D's ISO is between one and two stops better than the 60D. In fact, an ISO of 6400 on the 70D gives results that look almost as good as 1600 on the 60D. Actually quite amazing! The 70D's ISO at 12800 was noisy, but much less so than the 60D's 6400. A lens at f/1.4 with an ISO of 6400 or 12800 would allow you to capture images in extremely low light.

You must shoot out of camera jpgs then because the 70d is only about a third better stop at the raw level. What you are seeing is the newer nr and jpg engine they put in the newer bodies. Shoot raw on both and the difference isn't all that noticeable. Shoot raw with your 60d, and do your own nr and post processing and you would do as well as the results you saw from your friends camera.


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EOS5DC
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Jan 31, 2014 03:39 |  #30
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mwsilver wrote in post #16651915 (external link)
On my 60D an ISO of 6400 is way too noisy in most situations. ISO 3200 is still pretty noisy, but much less so and can be fairly effectively cleaned up in post. As a general rule I try not to exceed 1600, and prefer staying under 1000 if I can. Based on my experiences with my friend's 70D, I could safely double all the ISO speeds I mentioned above. The 70D's ISO is between one and two stops better than the 60D. In fact, an ISO of 6400 on the 70D gives results that look almost as good as 1600 on the 60D. Actually quite amazing! The 70D's ISO at 12800 was noisy, but much less so than the 60D's 6400. A lens at f/1.4 with an ISO of 6400 or 12800 would allow you to capture images in extremely low light.

You are effectively claiming that the 70D is better at high-ISO work than the 5D2. I don't buy it. Not that I shoot either, but I can compare my 60D, former 5D and now 6D. I get two solid stops between the 60D and 6D, IF I DO EVERYTHING RIGHT. No way you're getting that kind of difference between the 60D and 70D. Head-to-head with the same settings, lighting and framing, I doubt anyone could see any difference at any setting the bodies share.

Personal tastes and tolerances certainly enter the 'max ISO' equation. I get quite good results out of my 60D a 6400. Printed 8x10 they look very nice. Admittedly, 12,800 is harder to work with, but done properly, very nice 5x7 prints are possible. I haven't printed anything from my 6D, yet. I don't expect to need 25,600, but my 6400 and 12,800 stuff should be easier to work with and yield better results than I get with the 60D.


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Quick question about ISO
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