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11-06-2011, 03:00 PM   #1
Junior Member

Join Date: Dec 2007
Location: Sweden, Västerås
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Blurry/Out of focus 18-55


I have found that the kit lense 18-55 gives me some what blurry images.

Please tell me what can be wrong.

Im usin TaAv at 1/50 and 3.5 aperture when 18mm then my K5 gives me 1600iso.

The images gets not that sharp as I want. Can my UV-filter on the camera make the camer focus off or something.. the ISO blurr feels like its to much and what I have read is that people are very pleased with the blurr from the K5 when used on high ISO. I feel the opposite.

Here is one pictures... can it be Im thinking that is a better lense than it is?

ISO 1600

11-06-2011, 03:08 PM   #2
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Posts: 4,571
There's too many variables to say for sure. You need to isolate lens performance @ 18mm from 1) UV filter 2) camera shake (1/50 is too slow for sharp hand held pics) 3) high ISO.

I recommend taking the filter off, go outside in good light, then use 1/500 or faster or even better a tripod, and see how your lens performs @ 18mm.

You might have too high expectatios though, it's a kit lens and it's not that strong @ 18mm let alone 18mm and wide open.
11-06-2011, 03:23 PM   #3
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Join Date: Mar 2010
Location: Laval, Quebec Canada
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At f3.5 you will get a small amountin the photo that will in focus. Also we not know where you focus.
Time to buy the book EXPOSURE.
11-06-2011, 03:30 PM   #4
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Looks to me like the point of focus is on the floor beside the license plate.

11-06-2011, 03:46 PM   #5
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That image doesn't look bad at for those parameters and considering that it was hand-held. If you want to get sharper indoor images, consider upgrading to a higher-end lens (i.e. tamron 17-50mm F2.8) or use a tripod whenever possible.

DA* 16-50mm vs. Sigma and Tamron 17-50mm Comparison - Introduction

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11-07-2011, 10:24 AM   #6
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PhotoME shows that your K-5 was using the centre top AF point. You would get a better control of where it focuses by using the centre focus mode and recomposing.

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