7D Noise to ISO test.

Finnegan

Well-known member
I bought a Canon 7D two days ago after much research, debate, and footage viewing. As someone who comes from a traditional film background, I was very hesitant about buying into the DSLR movement but after seeing countless videos from 5D MKII and 7D users displaying gorgeous footage with very little or available light, I decided to jump in.

Unfortunately, I have to say I'm a little worried - my footage is quite a bit noisier than other people's at the same ISO ratings. I spent a good chunk of the last two days trying to find solutions as to why this might be the case. I turned off highlight tone protection and I switched the camera setting for noise reduction to "strong" - and yet, I still seem to be getting a visible but passable amount of noise around 800 ISO, and a distracting amount of noise at 1600 ISO.

Yet, I still see many people shooting night exterior footage at 1600 ISO and higher, with a great deal less of noise. A couple of them claim to have little or no noise reduction or color correction. So, I decided to shoot a test. Here are the results.

http://vimeo.com/10278847

As you can see, there it's around 640 ISO that video noise becomes apparent, if you look closely. In my opinion as a cinematographer it's passable, because it's only in the darker of shadows that it's evident and even still, you have to look very closely. However, moving into 800 ISO that noise is even more present in the shadows of the image. Again, in my opinion it's passable and doesn't really change the aesthetic of the image.

However, moving onto 1600 ISO and beyond the noise is apparent and distracting. I even asked my roommate (who you hear enter and begin to watch the Sharks hockey game) if he saw anything weird in the images at 1600 ISO and higher, and he said it looked a little "pixelated". Course, he's not a film or video guy so it's a little bothersome that he noticed it.

My question and topic of discussion is if I am doing something wrong, or if all those people who say they aren't using noise reduction/color correction are lying. As I stated before, I am dumbfounded how Philip Bloom and others are getting such clean and pristine images at night, with available light, shooting at 3200 ISO and higher...especially when I start to see noise around 800 ISO in my own footage with the same camera. Is it a possibility I have a defective camera? Because it seems much more likely that I'm doing something wrong.

And of course I realize there aren't many times, if any, where I'll be shooting such a high ISO with a closed down shutter to F11 or so. But the point was to see where noise starts to get too much to handle.
 
ISO 1600 is the limit for acceptable noise for me with the 7D. I suggest using NEAT VIDEO for a clean pass on a 1600 ISO shoot. It should bring very good results.
 
Hi Finnegan, Your link doesn't work because the video is set to private.
BTW - you really should do searches across this 7D forum, noise ISO tests
as well as many other test have already been done. For example this is one of the better ones
and it was done 5 months ago.
Video of the ISO tests, Vimeo compression crippled a couple of seconds:




ISO/Noise tests. 1080/24p, lens cap on. In FCP, native format, maxed the mids, applied same filter to every clip. Large video version is uploading.. Handheld, skewtastic footage to come..

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Thanks for the heads up on the privacy, don't know how that happened. Video should be viewable now.

I suggest using NEAT VIDEO for a clean pass on a 1600 ISO shoot. It should bring very good results.

I'm not familiar with this process or function. Is it a camera option or a post thing?
 
I don't mind the noise. So long as it doesn't mess with continuity (cut from noise to more/less noise). They did this a lot in Green Zone.

I would personally use a little post work to remove just a little noise and then add back in some film grain. Your audience won't bat an eye.
 
I hate to say it, but even at iso 4000 the video looked amazing! I barely notice it the noise. I'd say the noise isn't as apparent as my HVX200.

But be aware that noise is more noticeable in some computer monitors. I have 2 different monitors and in one the noise just jumps out at you. Try the footage through another monitor.

I have the 550D and I'm tempted to get the 7D.
 
I've shot with the 7D and I'm now considering buying a 550D but main concern is the 550D doesn't seem to have iso 640, which was my favorite with the 7D. Is there a setting one the 550D that will give me the same gain/noise bargain?

What makes iso 640 as noisy (maybe arguably less) than iso 400?
 
i find that downrezzing to SD for web output really helps reduce noise as well. Still get great quality video if you need to be using 1600 - 6400 you can get away with a lot more.
 
I've shot with the 7D and I'm now considering buying a 550D but main concern is the 550D doesn't seem to have iso 640, which was my favorite with the 7D. Is there a setting one the 550D that will give me the same gain/noise bargain?

640 was my fave on the 7D as well. The biggest gotcha with the t2i/550d is the ISO increments.
They go in full stop increments
100, 200, 400, 800, 1600, 3200 so you need to adjust your aperture to 1/3rd stops to fine tune exposure. At $799 there must be some trade off right?
 
640 was my fave on the 7D as well. The biggest gotcha with the t2i/550d is the ISO increments.
They go in full stop increments
100, 200, 400, 800, 1600, 3200 so you need to adjust your aperture to 1/3rd stops to fine tune exposure. At $799 there must be some trade off right?

I don't think Canon deliberately took away 1/3 stop ISO values just to create a rift in performance. They probably did it to make the camera simpler to operate.

In any case, I'd like to see a side by side with the 7D to see if the ISO steps are behaving the same or differently. Its the only way to be sure.
 
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