Roland Karlsson

Lives in Sweden Stockholm, Sweden
Works as a Programmer
Joined on Feb 23, 2002
About me:

Collector of K-mount and M42 stuff. Main camera K-1. Also interested in camera technology, e.g. Foveon. Also interested in computer based image analysis and transforms.

Recent activity

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Snapshot of threads updated recently in which you have recently participated.

Subject Forum Last post
Samyang 135 F2 + Pentax K1 Pentax SLR Talk 3 hours ago
Let's choose new Pentax Forum Moderators Pentax SLR Talk 12 hours ago
X3F Tools 0.55, supporting sd Quattro, released Sigma Camera Talk 21 hours ago
Mix of Bird Photos (5) Pentax SLR Talk 1 day ago
K-1: for whom? Pentax SLR Talk 3 days ago
Commoners from the Garden Pentax SLR Talk 3 days ago
K-1 visits the Rijksmuseum in Amsterdam Pentax SLR Talk 3 days ago
Rented 77 limited for some portraits (K1) Pentax SLR Talk 3 days ago
Calculation if your photo will be kept in mind - science with impact or just nonsense? Pentax SLR Talk 4 days ago
Star photography and the moon? Pentax SLR Talk 4 days ago
Announcement time!!! I mean speculation time! ;) Pentax SLR Talk 4 days ago
Best Pentax Lens Search - most complete list of lenses and information about them. Pentax SLR Talk 1 week ago
Sigma booth at Photokina 2016 Sigma Camera Talk 1 week ago
For pixel peepers, SD1 and 70mm, and Goethe ;) Sigma Camera Talk 1 week ago
OT: This just made my day Sigma Camera Talk 1 week ago
Three images taken with sdQ and Yashica Yashinon-DX 50mm f1.7 Sigma Camera Talk 1 week ago
SD Quattro fringing question Sigma Camera Talk 1 week ago
Optical distorsion? Pentax SLR Talk 1 week ago
best kept secret: HD Pentax DFA 28-105mm 3.5 Pentax SLR Talk 2 weeks ago
Let's talk about sd Quattro problems/shortcomings. Sigma Camera Talk 2 weeks ago
Why no "neutral" white balance option? Photographic Science and Technology 3 weeks ago
Built-in polarizer - convenience innovation Pentax SLR Talk 3 weeks ago
Does 1.5 teleconverter on K1 allow aps-c lenses at FF? Pentax SLR Talk 3 weeks ago
Fashion shoot at ISO 10,000 Pentax SLR Talk 3 weeks ago
Cleaning Pentax LX Pentax SLR Talk 3 weeks ago
Tony Northtrop's view on Pentax's biggest mistake. Pentax SLR Talk 3 weeks ago
So my friends what about the Sigma 20mm 1.8? Pentax SLR Talk 3 weeks ago
Nose or the eyes? Tamron 180/2.5 and Sigma 180/3.5 on K-1 Pentax SLR Talk 3 weeks ago
sd Quattro + 30mm Three images ISO 100 800 1600 Sigma Camera Talk 4 weeks ago
Petition to Carl Zeiss Pentax SLR Talk 4 weeks ago
Variable color filter array Photographic Science and Technology 4 weeks ago
mtf mapper: grid vs lensgrid Photographic Science and Technology 4 weeks ago
SDQ Sandyness Physical Reason Sigma Camera Talk 4 weeks ago
How good and fast is the K1 auto focus? Pentax SLR Talk 1 month ago
Foveon Comparison (careful, large image -20mb-) Sigma Camera Talk 1 month ago
anybody willing to share some X3Fs ????? Sigma Camera Talk 1 month ago
sd Q first shots (Super Takumar 50mm f/1.4) Sigma Camera Talk 1 month ago
Another K1 HDR attempt; Bay of Kotor Pentax SLR Talk 1 month ago
Sigma DP0 Quattro as panoramic camera Sigma Camera Talk 2 months ago
Issue with my K1. Pentax SLR Talk 2 months ago
Quattro sandiness - an honest question Sigma Camera Talk 2 months ago
The pixelshift are impressive compared with SOOC jpeg , but.. Pentax SLR Talk 2 months ago
Why I think the Merrills are the best Sigmas so far Sigma Camera Talk 2 months ago
Some jets - Out of service Sigma Camera Talk 2 months ago
Is this normal? K-1 ISO3200, 120sec exposure... Pentax SLR Talk 2 months ago
New K1 user – useful tips Pentax SLR Talk 2 months ago
K-1 - possible to copy from card 1 to card 2? Pentax SLR Talk 2 months ago
Time for DSLRs with internal memory disks? Pentax SLR Talk 2 months ago
OK all you Quattro-ites. Here is a full 50mm upsize Sigma Camera Talk 2 months ago
Trenton Airshow Final Jelly Belly Act (10) Pentax SLR Talk 2 months ago