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Focus Issue
Old 10-09-2004, 09:03 PM   #1 (permalink)
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Rob and Karina stopped by for an engagement portrait session today. We had a good time. I was happy chimpin' at the images on the LCD, but when I got home, I found some weren't too my liking. Please tell me, does this look out of focus?



Image shot in RAW on a Canon 10D at:

1/125
f5.6
ISO 100
114mm

Later converted to JPG with the following values:

5400K
tint +20
exposure 0.00
shadows 0
brightness 50
contrast +25
saturation +9
sharpness 25

If it is out of focus, where do you see the focal point at? Do you think it's in focus, only when I converted to JPG with the above values did I alter it in some way to make it out of focus? How do I fix this and keep it from happening in the future?

Also, I have about 35,000 exposures on my 10D. Should I be considering a recalibration and/or shutter replacement?

Thanks for the help.

Mike
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Re: Focus Issue
Old 10-09-2004, 11:03 PM   #2 (permalink)
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I don't know much about digital. I only have used it on a limited basis.
Take that back, I meant to say, I only use digital cameras on a limited
basis. I work digital everywhere else.

I don't understand why anyone would go from RAW to Jpeg. Jpeg is a lossy
format and that can give a false impression of where your point of focus
should be. Part of your image information could have been discarded in an
area you didn't want it to be. Image resolution can also affect the depth
of field. I discovered that using virtual cameras in 3-D applications.
But it also applies in reality with digital cameras to.

I go from RAW to PSD. Once everything is where it should be, I then export
to jpg as a final output for web only.

I tend to export TIFF for high end image setters.
JPEG for web
TARGA for video
Various proprietary formats for motion pictures.

Greg.
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Re: Focus Issue/ OOPs!
Old 10-09-2004, 11:05 PM   #3 (permalink)
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I may have read your post incorrectly.
My information may be totally useless.
Sorry if that is the case.

Greg.
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Re: Focus Issue
Old 10-09-2004, 11:06 PM   #4 (permalink)
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Hi Mike
It's I nice photo but your right it is a tad soft. The focal length and the shutter speed were pretty much maxed out for hand holding. What did you do in Photoshop for sharping? I don't think there's anything wrong with your 10D but you know you really need a 20D and this pretty much proves it.

Ron Paulsen
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Re: Focus Issue
Old 10-09-2004, 11:12 PM   #5 (permalink)
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Mike,

This image has been resized (down sized) to 675x450 and saved as fairly compressed jpg. Of course its gonna be a little soft... most everyone i know sharpens if they are going to downsize this severly. I'd have to see the orginal image to even attemp to assertain if the focus was good or not. that's why its always better to shoot raw. Just curious I see the image was shot at 114mm. What lens was that?
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Re: Focus Issue
Old 10-09-2004, 11:16 PM   #6 (permalink)
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Is it just me or does the focus point appear to be about 6-12" in front of his foot?

Doesn't 5.6 provide a fairly narrow FOF at a long 'camera to subject' distance?(An actual question for the group)

Were you manually focusing on the eyes? Seems I remember someone else having a focus problem with the 10D.(Meaning...What hits the CMOS not being the same as what is in the viewfinder)

Joe
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Re: Focus Issue
Old 10-10-2004, 02:08 AM   #7 (permalink)
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i wish i had a nickel for every time an image did not meet my expectations when DL'd to my computer, but looked great when i chimped!

maybe i should say it this way: i wish i had a nickel for every time chimping made a monkey out of me.

ps--the focus looks to be in front of them---maybe a half-foot or so.
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Re: Focus Issue
Old 10-10-2004, 05:58 AM   #8 (permalink)
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Yeah, I think that's where the focal point is too. Here's how I focus and compose.

I focus on the eyes in AF. I hold the shutter down halfway so the focus doesn't shift and then I frame and compose. Once the image looks the way I like it, I shoot.

Mike
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Re: Focus Issue/ OOPs!
Old 10-10-2004, 06:03 AM   #9 (permalink)
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Greg,

Your info may not have been relevant, but it was still very useful.

Mike
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Re: Focus Issue
Old 10-10-2004, 06:07 AM   #10 (permalink)
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I didn't really do anything in PS for sharpening. I'd much rather not have to do much image manipulation in post processing. It's a little ironic, as I shoot in RAW. Maybe a little unsharp mask would help.

My hands aren't very steady and I'm really just not comfortable hand holding any less than 1/60. Maybe with my focal length, 1/125 is a little slow.

Mike
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