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
Overly sharp? A lens comparison. Pentax SLR Talk 2 min ago
DP2 Merrill and Kalpanika Sigma Camera Talk 1 day ago
Appreciating WR in Southern California Pentax SLR Talk 1 week ago
Pentax K7 Pentax SLR Talk 1 week ago
"peace" Sigma Camera Talk 1 week ago
Major breakthrough Pentax SLR Talk 1 week ago
Utah Landscape With K-1 Pentax SLR Talk 1 week ago
Icy sightseeing, RoboMammoth and other stuff! Pentax SLR Talk 2 weeks ago
First shot 2017 Pentax SLR Talk 3 weeks ago
SD Quattro H vs MF for fine detail/landscapes at low ISO Sigma Camera Talk 3 weeks ago
Venus 12mm F2.8 ~ Christmas Lights (11) Pentax SLR Talk 3 weeks ago
Fraction of the second mirrored Pentax SLR Talk 3 weeks ago
Quattro, isn't it 5mp chip? Sigma Camera Talk 3 weeks ago
Sigma SD Quattro with SA mount. A mistake? Sigma Camera Talk 4 weeks ago
Russian, M42, Takumar -- any good choices for FF? Pentax SLR Talk 4 weeks ago
sd Quattro H X3F Files? Sigma Camera Talk 4 weeks ago
SD H Quattro versus Medium format Sigma Camera Talk 4 weeks ago
Infinity focus stop not right. Pentax SLR Talk 1 month ago
SDQ-H DC or DG Sigma Camera Talk 1 month ago
FA 77mm f1.8 Limited - Just as good Pentax SLR Talk 1 month ago
Why Can't SPP 6.5.0 Save RAW Files As DNG Files? Sigma Camera Talk 1 month ago
K-1 Fisheye comparison: different takes on 180 FOV Pentax SLR Talk 1 month ago
Quattro color channels in SPP 6.5 Monochrome Sigma Camera Talk 1 month ago
SD Quattro Lens Protocol Sigma Camera Talk 1 month ago
Show me YOUR "lonely benches" II Pentax SLR Talk 1 month ago
dng for earlier models? Sigma Camera Talk 1 month ago
Quattro SD EVF quality Sigma Camera Talk 1 month ago
2016 Readers' Polls Pentax SLR Talk 1 month ago
Are they any Linear DNG converters for Linux? Sigma Camera Talk 1 month ago
Ricoh support forum Pentax SLR Talk 1 month ago
This Forum has a problem Sigma Camera Talk 1 month ago
Jonas Peterson gone aps-c Pentax SLR Talk 1 month ago
I thought Pentaxians would like this! Pentax SLR Talk 1 month ago
Looking For A Vintage Lens. Are These Worth The Gamble? Pentax SLR Talk 1 month ago
Sigma to support DNG format on SD H along with new version of Sigma Pro Sigma Camera Talk 1 month ago
Has SD1 Merrill been discontinued? Sigma Camera Talk 1 month ago
SD-Q-H DNG Sigma Camera Talk 1 month ago
Any downsides of K1 DNG vs PEF? Pentax SLR Talk 1 month ago
Kalpanika X3F Wrapper Sigma Camera Talk 1 month ago
Affinity Photo supports X3F Sigma Camera Talk 1 month ago
Goodbye everybody Sigma Camera Talk 1 month ago
ISO value: SD10 versus Modified SD1 Merrill (tech. warning). Sigma Camera Talk 1 month ago
Kalpanika X3F Wrapper (Mac v 0.56.2) Sigma Camera Talk 1 month ago
X3F conversion: TIFF VS Linear DNG - What's better? Sigma Camera Talk 1 month ago
Please Sigma NO Full Frame Sigma Camera Talk 1 month ago
How's the 18-135 that comes with the K70? Pentax SLR Talk 1 month ago
Lomography Daguerreotype 64mm F2.9 Pentax SLR Talk 2 months ago
K-3 Focus Followup - Making sure it's ok to sell, don't kill me Pentax SLR Talk 2 months ago
Kalpanika 0.56 - supporting sd Quattro released Sigma Camera Talk 2 months ago
K1 GPS Pentax SLR Talk 2 months ago