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Thread started 31 Oct 2011 (Monday) 02:02
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Usable ISO range for the 7D?

 
BaghdadFred
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Oct 31, 2011 02:02 |  #1

For indoor lighting and low light. What is the usable ISO range for the 7D? I am aware you have the ability to crank it up to ISO-H (12800) However I rarely go above 1600. Is this way too conservative?


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tkbslc
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Oct 31, 2011 02:04 |  #2

Not to be a smartass, but you own the camera, why not try it out and find your personal limit?

Personally I would say ISO 6400 is perfectly usable, and 12800 in black and white, but others are more sensitive to noise. That's why I say you should test for yourself.


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macroimage
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Oct 31, 2011 02:32 |  #3

It's mostly a matter of scale. How big do you want the output? The bigger the final image, the more the noise shows. Smaller hides it. Exposing bright minimizes the noise, underexposing brings it out.

All of the ISOs are usable but the use varies.


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artyman
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Oct 31, 2011 03:29 |  #4

6400 ISO

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Alex_Venom
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Oct 31, 2011 05:15 |  #5

I'm comfortable up to 3200 on mine. 6400 is good but I find it a bit too much noisy.


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Oct 31, 2011 05:32 |  #6

Nobody can give you such a range for two reasons:

1) Your intended output size is critical. ISO12800 may be fine for someone making web images or small prints and will be a disaster on a 20x30 print.
2) Different people and subjects will have a different tolerance to noise.

What I've done over the years when using various bodies at high ISO has been to review the appearance of the noise at 1:1 views and then again in large prints. I've developed a good sense of how noisy a 1:1 view can be before I start to find it a problem in a print.


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randy98mtu
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Oct 31, 2011 06:51 |  #7

I find 1600 to be very clean, 3200 is usable, 6400 starts to show noise, but I still don't find it objectionable. I'm not good at PP or NR, so I pretty much just use what comes out and do some raw processing.

This was ISO 6400 with my 7D. 30mm, f/1.4, 1/50s.

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funkyfones
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Oct 31, 2011 10:05 |  #8

6400 is easily usable, I assume this is for pictures, for video theres a better order to go in to get less grain as you increase the ISO but I think it shows abit more so probably 3200 would be about right.


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mntbikejack
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Oct 31, 2011 10:32 |  #9

I find all ISO stops on the 7D to be usable. The higher ones clean up very nicely with Lightroom noise reduction and sharpening.


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amfoto1
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Oct 31, 2011 10:36 |  #10

I'll use 3200 without much concern. Rarely higher than that...

But as someone pointed out, it depends upon how the image will be used and is pretty subjective. For example, an image that's going to be online at Internet resolutions can tolerate higher ISO... Also a planned B&W conversion, I might deliberately use a high ISO to add some "graininess".

Plus there are plenty of softwares that can help deal with high ISO noise. Newer versions of LIghtroom and Photoshop both have improved noise handling. But there are also plug ins and stand alone s'wares such as Nik DFine that can do a good job, too.

Underexposure is still the biggest cause of noise. Any time you have to dial up exposure in post production, you'll be adding noise. A little bit of over exposure is safer, so long as it's not so much that you start to lose important highlight detail.

It would be a good idea to run some tests yourself.


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gjl711
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Oct 31, 2011 10:37 |  #11

For me it's ISO 1600 without though to any type of noise management, just set it ISO 1600 and shoot away. After that I have no problems with ISO6400 shots but I get a little more careful in setting up the shot like shooting to the right, avoiding lots of shadowy areas, and some type of selective noise processing in post. The 7D can provide some really nice ISO6400 shots if careful.


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Oct 31, 2011 10:45 |  #12

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RTPVid
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Oct 31, 2011 11:18 |  #13

BaghdadFred wrote in post #13331135 (external link)
...What is the usable ISO range for the 7D?...

Usable for what? Who is viewing the pics and in what form? (And what are they expecting?)


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Daniel ­ Browning
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Oct 31, 2011 12:24 |  #14

BaghdadFred wrote in post #13331135 (external link)
Usable ISO range?

This is like asking "What's good here?" Some will say "I only eat the fried chicken, everything else is terrible." Others will say "well, about half of it is good, the rest stinks." Others will say "everything tastes great!".

It all depends on your circumstances and personal taste.


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Eric
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Oct 31, 2011 12:31 |  #15

3200 for me, I'll crank it up to 6400 if need be, but I try and keep it under 3200 for the bulk of it.


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Usable ISO range for the 7D?
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