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Thread started 25 Nov 2006 (Saturday) 11:53
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Help me decide if something is wrong. (with pics)

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ccheever
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Nov 25, 2006 11:53 |  #1

So lately I have been noticing that my pictures are not as crisp as I think they should be. I know I shouldn't do it, but when I pixel peep at 100% the images are very soft and seem to have too much noise. See the example below.

Here is the full image, taken with 30D, 17-40, F/9, ISO 500, 37mm.

IMAGE NOT FOUND
Byte size: ZERO | Content warning: NOT AN IMAGE


Then here is a 100% crop of his face.

IMAGE NOT FOUND
Byte size: ZERO | Content warning: NOT AN IMAGE


So is this normal? I know it was shot at ISO 500, which was my mistake, I didn't check it before shooting. But is that what all the noise is from? any ideas?

Thanks.

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Jon
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Nov 25, 2006 11:58 |  #2

It looks a tad underexposed; that'll make any picture look noisy. As for sharpness - have you done any post-processing on it?

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ccheever
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Nov 25, 2006 11:59 |  #3

Ok, the images are acting weird for me, so here are the direct links.

http://ct.pbase.com …180.NcWruk42.IM​G_2870.jpg (external link)

http://ct.pbase.com …pc4h63p.IMG_287​0_crop.jpg (external link)

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ccheever
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Nov 25, 2006 12:00 |  #4

oh yeah, forgot to say, no PP has been done.

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ccheever
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Nov 25, 2006 12:01 |  #5

I just want to know if this is normal, I'm fairly good at PS so I have no problems editing them to look the way I want. But if this is not normal then I want to get it fixed.

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Jon
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Nov 25, 2006 12:06 |  #6

What were you focussed on, and how?

Jon
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goforphoto
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Nov 25, 2006 12:10 |  #7

Iwould say with a 30d even at 800 iso you should get a smoother image. Granted it depends alot on the lens though. Are all of your images like thins or just the ones taken with this lens?

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ccheever
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Nov 25, 2006 12:14 |  #8

goforphoto wrote in post #2311339 (external link)
Iwould say with a 30d even at 800 iso you should get a smoother image. Granted it depends alot on the lens though. Are all of your images like thins or just the ones taken with this lens?

I will have to do a little research on that. Im not sure, I usually dont pixel peep.

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ccheever
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Nov 25, 2006 12:15 |  #9

Jon wrote in post #2311333 (external link)
What were you focussed on, and how?

Jon, i focused on her face, but she was just as fuzzy.

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Jon
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Nov 25, 2006 12:18 |  #10

Which focussing point?

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goforphoto
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Nov 25, 2006 12:18 |  #11

Check your other lenses, if they don't produce the same defect your lens may need calibration.

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ccheever
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Nov 25, 2006 12:47 |  #12

Jon wrote in post #2311359 (external link)
Which focussing point?

I used center point. Then recompossed.

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Jon
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Nov 25, 2006 16:01 |  #13

That's not a good plan when you're very close (as you were) to the subject, since the distance alters significantly. In short, you moved the focus probably 8 inches to a foot (or more) back from the subject when you recomposed. Try selecting an AF point closer to the desired point of focus and use that. For instance, you might have chosen the extreme top (in portrait orientation) AF point and focussed on the man with minimal or no need to recompose.

Oh, and there's no EXIF data. Shutter speed? At least 1/60 I hope?

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ccheever
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Nov 25, 2006 16:27 |  #14

I will have to try that i guess, I didnt think it would make that big of a difference, but that will be an easy fix if it is the problem. Also, SS was 1/200

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JaGWiRE
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Nov 25, 2006 16:38 |  #15

Jon wrote in post #2312169 (external link)
That's not a good plan when you're very close (as you were) to the subject, since the distance alters significantly. In short, you moved the focus probably 8 inches to a foot (or more) back from the subject when you recomposed. Try selecting an AF point closer to the desired point of focus and use that. For instance, you might have chosen the extreme top (in portrait orientation) AF point and focussed on the man with minimal or no need to recompose.

Oh, and there's no EXIF data. Shutter speed? At least 1/60 I hope?

Is that because of focusing distance? If you were shooting at infinity that would not come into play while doing a landscape shot or something, right?

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Help me decide if something is wrong. (with pics)
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