[old4570]

Well , I find myself in a position of owning possibly to many AF lenses , and all overlapping each other with the focus ranges ..

So something has to go , while some lenses have to stay ..

I have two cameras , Pentax istDS and a K5 .. Each will wear a lens , the rest are ( probably for sale )

Im starting back to front , sorry .. this is so time consuming

Ive chosen relatively difficult subjects to photograph ( for lens and auto focus system ) as the lenses ( camera ) will be run full auto 99% of the time
Now this is by no means scientific , or even really well done .. But relatively basic to show the strengths and weaknesses ( all images taken in full auto mode - or green mode )

Camera is Pentax istDS ...

SMC Pentax-DA 18-55mm F3.5-5.6 AL Review Page






Images were taken @ 18 and 55mm at as close a focus as was comfortable for the camera on a tripod ..






Free hand











SMC Pentax-F 35-80mm F4-5.6 Review Page

As above for details - First two images are taken with camera on a tripod as close as the camera auto focus will comfortably allow ..
Rest of the images are free hand ..





















Sigma 18-50mm F3.5-5.6 DC Review Page










Yeah ! where are the rest of the pictures ? ( dont know what happen ) , must be getting old .



Sigma 28-80 f3.5-5.6 Review Page




















Sigma 28-70mm F2.8-4 UC Review Page

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Last edited by old4570; 03-14-2013 at 07:35 PM.

[old4570]

Well the lens that went onto the istDS was the first one ( SMC Pentax-DA 18-55mm F3.5-5.6 AL )

Next I will post the K5 results ...

[carrrlangas]

DA 18 55 and Sigma 28 70 are the ones worth it for me...

[old4570]

Both are Keepers , the 28-70 Sigma will be a back up lens ...

[carrrlangas]

then sell the 28-50 and 28-80 and you are done.