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Photography Question 
Rachelle P. Cooper
 

50mm fixed macro.. seems blurry


I have a Sigma 50mm fixed f2.8 Macro lens.. I find that pictures tend to come out blurry...Other times its great.. is this because its a macro lens?
I do alot of walking around because its fixed, and I use this lens for family portraits and scenery as well.. is that why??
Should I have just bought this lens without it being Macro.. or does that matter..
I am just disappointed with this lens, but have heard great reviews on it.. What could be wrong?? Please help!!!


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2/27/2008 1:21:30 PM

 
David A. Bliss   Rachelle, can you post some examples? It would be very helpful in diagnosing the problem.


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2/27/2008 2:47:17 PM

 
Rachelle P. Cooper   I tried uploading some pics.. I must be doing it wrong or something.. do I need a media gallery to upload them


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2/27/2008 2:58:55 PM

 
Rachelle P. Cooper   Could it just be that I am not being still enough.. its hard when I have to move forward or backward.. maybe I need to up the ISO, if shooting people..
I dont know..


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2/27/2008 3:06:35 PM

 
David A. Bliss   Without a some examples it is going to be hard to give you advice.

If the lens aperture is set to 2.8 it will have a very narrow depth of field. If you accidently focus on something in the background or foreground, even if it is very close, it can cause the subject to be out of focus. If you are close enough, you might even have a situation where the tip of the nose is in focus but the eyes are not.

It could be caused by too slow a shutter speed to be handheld, so you are getting hand shake in the picture.

If you are shooting digital, you can look at the EXIF info and let us know what the aperture and shutter speed was on the pictures that were blurry.


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2/28/2008 1:10:11 PM

 
Bob Cammarata
BetterPhoto Member Since: 7/17/2003
  Which parts of the images were blurry?

Is it overall...or just the parts that were moving?

It's true that you really need to post examples to isolate the cause of your dilemma.


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2/28/2008 2:12:02 PM

 
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