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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Jan 2013 (Sunday) 12:19
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24-105 unhappy with the sharpness - please comment?

 
Bones1974
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Jan 20, 2013 13:46 |  #16

Definitely looks front focused. The last sample crop with the folds of the dress looks pretty sharp. I'd definitely have a go at microadjusting.




  
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Clemson656
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Jan 20, 2013 13:49 |  #17

Bones1974 wrote in post #15512318 (external link)
Definitely looks front focused. The last sample crop with the folds of the dress looks pretty sharp. I'd definitely have a go at microadjusting.

Ditto that.


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artyH
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Jan 20, 2013 13:54 |  #18

I would take some outdoor shots of people - portraits at 5 or 6 feet. You should be able to get razor sharp shots of eyes/eyelashes, if you stop down to F5.6 and have a reasonable shutter speed.
If you are not happy with what you got on the trip, perhaps you may want to try center-point AF without recomposing. You can always crop later. It is possible that the outer points on your camera are not working so well with the F4 lens. The camera could also be at fault here. Try center-point AF and see if that changes anything.
I assume that you were selecting the outer point, rather than letting the camera do it for you.




  
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Diamonddec
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Jan 20, 2013 13:55 |  #19

Bones1974 wrote in post #15512318 (external link)
Definitely looks front focused. The last sample crop with the folds of the dress looks pretty sharp. I'd definitely have a go at microadjusting.

My thoughts too. :)


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pawelx
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Jan 20, 2013 13:59 |  #20

Clemson656 wrote in post #15512331 (external link)
Ditto that.

thank you for taking the time to look at these photos and your advise.
Actually I messed up with the last shot - this one one of the few frames that evening where I turned on automatic AF point selection. So it may not even be front focusing?
Would you say that the dress is sharp enough?
One more shot - high shutter speed 1/640sec, f/4.0, ISO 6400

Single point AF, AI Servo, focusing on the dancer's nose


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pawelx
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Jan 20, 2013 14:02 |  #21

artyH wrote in post #15512344 (external link)
I would take some outdoor shots of people - portraits at 5 or 6 feet. You should be able to get razor sharp shots of eyes/eyelashes, if you stop down to F5.6 and have a reasonable shutter speed.
If you are not happy with what you got on the trip, perhaps you may want to try center-point AF without recomposing. You can always crop later. It is possible that the outer points on your camera are not working so well with the F4 lens. The camera could also be at fault here. Try center-point AF and see if that changes anything.
I assume that you were selecting the outer point, rather than letting the camera do it for you.

Good points, thanks.
yes, manually selecting the outer point (except for one example that I pasted here - sorry for the confusion it may have caused). This has normally been my standard practice for shooting environmental / performance / etc type vertical full body portraits - manually selecting the AF point which will fall on the person's face.


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pawelx
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Jan 20, 2013 14:03 |  #22

artyH wrote in post #15512344 (external link)
I would take some outdoor shots of people - portraits at 5 or 6 feet. You should be able to get razor sharp shots of eyes/eyelashes, if you stop down to F5.6 and have a reasonable shutter speed.

should this be affected by the light conditions / weather at all? I mean, should I expect less sharp shots if it's grey and snowing, as it is in London these days, for example?


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archer1960
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Jan 20, 2013 14:11 |  #23

pawelx wrote in post #15512366 (external link)
thank you for taking the time to look at these photos and your advise.
Actually I messed up with the last shot - this one one of the few frames that evening where I turned on automatic AF point selection. So it may not even be front focusing?
Would you say that the dress is sharp enough?
One more shot - high shutter speed 1/640sec, f/4.0, ISO 6400

Single point AF, AI Servo, focusing on the dancer's nose

Shot wide open again; probably not optimal.


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tickerguy
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Jan 20, 2013 15:00 |  #24

The knuckle on the finger of the one looks pretty sharp.

Looks like it is front-focusing to me.


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pawelx
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Jan 20, 2013 15:06 |  #25

front-focusing seems to be the verdict, then... I wonder if I should try to get it serviced/ calibrated by a Canon service centre under warranty, as it's only a month old or so. But anyway, it's good to know it's not a case of having to return and exchange the lens altogether - people generally seem to agree that most shots have areas of sharpness, just not necessarily where I'd like them to be;)


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snapWindsor
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Jan 20, 2013 15:14 |  #26

Looks soft to me.




  
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pawelx
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Jan 20, 2013 15:15 |  #27

snapWindsor wrote in post #15512633 (external link)
Looks soft to me.

throughout the frame you mean?


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snapWindsor
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Jan 20, 2013 15:21 |  #28

I just don't see any areas that are as sharp as they should be. It looks like my old 70-300mm IS USM when I would shoot at 300mm.




  
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JohnB57
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Jan 20, 2013 15:28 |  #29

This might be obvious, but have you tried the lens on the 50D?




  
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pawelx
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Jan 20, 2013 15:36 |  #30

JohnB57 wrote in post #15512682 (external link)
This might be obvious, but have you tried the lens on the 50D?

haven't...


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24-105 unhappy with the sharpness - please comment?
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