Sigma 18-200 DC f3.5-6.3

psychdoc · 07-26-2011, 03:48 PM

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This is the older version of the sigma. I think the newer ones comes with OS but maybe not for Pentax.

In any case, soft at some focal lengths but it was a good starter lens. Don't use it much anymore.

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Last edited by jct us101; 07-27-2011 at 07:37 PM.

rr4562 · 07-29-2011, 06:47 PM

Good snaps. I got the same lens and have started using and learning them

psychdoc · 08-13-2011, 01:39 PM

Someone asked me to post a pic with this sigma lens showing a portrait with a "large blurry background".

With a zoom lens, what you need to do to get this effect is

1. get fairly close to the person
2. and zoom in almost to the maximum
3. while at the same time making sure that whatever objects are in the background are at a large distance away:

jjbacoomba · 02-02-2013, 08:00 PM

very well done

gjtoth · 02-02-2013, 08:09 PM

Very nice, indeed. Where was the beach image taken?

08-13-2011, 01:39 PM	#3
psychdoc Veteran Member Join Date: Jul 2010 Location: Bham Photos: Gallery \| Albums Posts: 949 Original Poster	Someone asked me to post a pic with this sigma lens showing a portrait with a "large blurry background". With a zoom lens, what you need to do to get this effect is 1. get fairly close to the person 2. and zoom in almost to the maximum 3. while at the same time making sure that whatever objects are in the background are at a large distance away: Last edited by psychdoc; 11-14-2015 at 03:36 PM.

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07-29-2011, 06:47 PM	#2
rr4562 Inactive Account Join Date: Jul 2011 Location: nj Posts: 11	Good snaps. I got the same lens and have started using and learning them

02-02-2013, 08:00 PM	#4
jjbacoomba Senior Member Join Date: Apr 2011 Location: San Antonio,Texas Photos: Gallery Posts: 279	very well done

02-02-2013, 08:09 PM	#5
gjtoth Veteran Member Join Date: Apr 2011 Location: Louisville, Kentucky, USA Posts: 1,962	Very nice, indeed. Where was the beach image taken?