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Canon EOS Crop Sensor for HD
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Old September 5th, 2010, 03:08 PM   #1
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Max ISO in Low Light You Would Use in T2i

When shooting in low light, I would set to the widest aperture, shutter to 1/30. I know there might be ghosting in motion. but in weddings, it works just fine. Then for ISO, it's either 800 or 1600. 3200 is just too noisy. what are your thoughts?
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Old September 5th, 2010, 04:28 PM   #2
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Hi Taky,

I'm very happy with 800, not so with 1600. I'll use the neatvideo plugin on 1600 occasionally and if I have to shoot at 3200 it definitely gets used.
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Old September 5th, 2010, 04:37 PM   #3
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Thanks Joel! I think 800 is very acceptable.. and 1600 is marginal.. I did use 3200 the other night at the church rehearsal.. they don't turn on the light much at the rehearsal...
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Old September 5th, 2010, 11:55 PM   #4
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I would test for "noise" at 1600, 3200, and 6400 viewing results on a reference monitor/TV that was typical of how the finished product would be viewed. I found that the Dell monitor on my primary editing workstation was set to too high a degree of sharpening, video reviewed on my older setup (Samsung monitor) showed very little noise while the same video viewed on the primary workstation looked visibly noisy at 1600 and worsened at higher ISOs.

I just replaced an LCD 42" JVC TV that had the LCD panel going bad with a Sony Bravia 40" with a refresh rate of 240 and viewed all of my high ISO test footage on that using a media player connected with HDMI with results matching what I see on the Samsung monitor. So I brought the sharpness down quite a bit on the Dell monitor to match the TV and Samsung monitor. Sharpness on that Dell monitor was set to about 95% max and how I missed that when setting up that workstation, I don't know.

But it definitely seemed to accentuate and emphasize even very minor noise levels.
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Old September 5th, 2010, 11:58 PM   #5
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It doesn't matter how the noise level display in your TV/monitor. I have no control of which device my clients will be viewing the wedding DVD. will need to find a common ground that view the best at most display units.
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Old September 6th, 2010, 12:24 AM   #6
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I find that ISO 400 is as far as I am willing to go without noise reduction. ISO 800 is my preferred limit. I would (and have done) do 1600 if absolutely necessary. I would not shoot above that for a paying client. ISO 400 at F1.4 in a dark environment seems congruent with my eyes. ISO 800 is actually brighter than I can see with my eyes. I just recorded some stuff tonight in a skate rink with light levels around 3-5 footcandles. Recording at ISO 800 and running through a good mp4 codec cleaned things up VERY nicely.
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Old September 6th, 2010, 02:45 AM   #7
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For weddings i use iso 1600 all the time when it gets real dark and here that's about with every wedding :) My images don't show more noise then my xh-a1 at 6db gain with those setting. When transfered to dvd you hardly notice the noise. Only at 3200 iso I use a noise removal plugin.
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Old September 6th, 2010, 06:37 AM   #8
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I still have my Xh-A1 but I never use +6db gain. It's too noisy. I hardly use +3 db since I started to use the Comer 1800 light. But it's true, noise are not as noticeable when exporting DVD.. but I do need to output BluRay also.

Looks like I'll be getting the Canon 70-200mm F2.8L IS.. ouch!
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Old September 6th, 2010, 12:58 PM   #9
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Hey,

Quote:
Originally Posted by Taky Cheung View Post
Looks like I'll be getting the Canon 70-200mm F2.8L IS.. ouch!
Ouch is right - not only the initial cost but its a beast. With a monopod attached to the lens bracket its very nicely balanced though. If you buy new you can look at this lens as a safe investment in terms of resale value if you take care of it - it holds 80% of its value. Unfortunately if you don't mind buying used that fact plays against you.
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Old September 6th, 2010, 01:02 PM   #10
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Joe.. thanks for your msg. it's comforting actually. I really think IS is needed for telephoto lens.

Found some on ebay selling it brand new at $1800. Not sure should I get from them or get from BH/Amazon. your thought?
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Old September 6th, 2010, 01:03 PM   #11
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ISO 400. I've had noise problems at ISO 200, light levels where about F4 @ 45th, background was redish hand painted canvas. I had to grain remove the entire area, with a loose roto mask around the subject.

I've shot street stuff @ 800 if there is some light there and its been ok, but if you don't have lit areas, forget it it. if its all very low even light levels, the noise will be pretty bad.
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Old September 6th, 2010, 01:17 PM   #12
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Canon T2i, ISO 800, Nikkor 50mm F1.4 (mid-1960s) wide open...
Lighting on the floor is 2.5 - 4.5 foot candles

There is NO NOISE REDUCTION in this video. Obviously, Youtube's compression is causing major artifacting. Nothing I can do about that.


YouTube - Chase1
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Old September 6th, 2010, 02:51 PM   #13
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Taky, there are two versions of the Canon 70-200mm 2.8 IS lens now, the $2300 is the latest version, the old version is $1900 at B&H. The latest version may be worth the money to a photographer.
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Old September 6th, 2010, 03:21 PM   #14
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400 ISO is the max I use with f1.4 lenses. Going to 800 ISO is acceptable for web. I would never go 3200 ISO, as the sharpness is cut in half, plus all the noise.

Forget the 70-200 f2.8 if you're shooting low-light receptions. For my kit, I turn to my 35mm f1.4, 50mm f1.4 and 85mm f1.4 when the sun sets. I will not use any other lens f2.8 or higher.
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Old September 6th, 2010, 04:38 PM   #15
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Quote:
Originally Posted by Galen Rath View Post
Taky, there are two versions of the Canon 70-200mm 2.8 IS lens now, the $2300 is the latest version, the old version is $1900 at B&H. The latest version may be worth the money to a photographer.
Galen, how can I tell which version is it? So you are saying I can stick with the old version with IS for $1900 ?
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