xpatUSA

xpatUSA

Lives in United States Bellville, TX, United States
Works as a Retired Consulting Engineer
Has a website at tcktek.blogspot.com
Joined on Dec 15, 2011
About me:

Mostly close-ups of watches for web publication.

Recent activity

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

Subject Forum Last post
Foveon sensor question Photographic Science and Technology 9 min ago
Infrared with the SD1/1770C Sigma Camera Talk 57 min ago
F0.95 ??? Photographic Science and Technology 12 hours ago
Natural viewpoint/ Focal length of human eye ? Open Talk 22 hours ago
Something in the air Sigma Camera Talk 22 hours ago
DP Merrill Photographic Dynamic Range (PDR) Sigma Camera Talk 1 day ago
Foveon Blue Flower - Texas Hill Country Sigma Camera Talk 1 day ago
DP2 Merrill on Italy's Amalfi Coast Sigma Camera Talk 1 day ago
SD9 Dark Frame Investigation Sigma Camera Talk 1 day ago
Foveon Sensor Layer Noise - are they really different? Photographic Science and Technology 2 days ago
DP2M and the yellow stress test. Sigma Camera Talk 3 days ago
Confused by "equivalency" and ISO for low light Open Talk 3 days ago
Kazuto-sama interview - part II Sigma Camera Talk 5 days ago
DP Merrill Read Noise Sigma Camera Talk 1 week ago
Analog Front End (AFE) versus Programmable Gain Amplifier (PGA) Sigma Camera Talk 1 week ago
Buying SD10 or not-very cheap? Sigma Camera Talk 1 week ago
Stupid question? Sigma Camera Talk 1 week ago
Ughhh. Sigma Camera Talk 1 week ago
Raw Saturation Level Sigma Camera Talk 1 week ago
What is the purpose of the gamma setting in Quick MTF? Photographic Science and Technology 1 week ago
12 bit and 14 bit Sigma Camera Talk 1 week ago
Resolution Sigma Camera Talk 1 week ago
DP2 compared to Fuji X-E1 Sigma Camera Talk 1 week ago
Bye! Sigma Camera Talk 1 week ago
Anyone using Rawdigger to convert DPM files Sigma Camera Talk 1 week ago
selling my Sigma gear Sigma Camera Talk 2 weeks ago
SD9 compared to Panasonic m4/3 GH1 - only slightly technical, honest! Sigma Camera Talk 2 weeks ago
I want high resolution now! Sigma Camera Talk 2 weeks ago
Are you interested in dynamic range measurements on Sigma cameras? Sigma Camera Talk 2 weeks ago
Why aren't sensors color corrected? Photographic Science and Technology 3 weeks ago
f-number equivalent between m43 and FF Photographic Science and Technology 3 weeks ago
SPP retaining file changes Sigma Camera Talk 3 weeks ago
SD10, Full Spectrum Shots and RawDigger Sigma Camera Talk 3 weeks ago
Infrared with the DP1x Sigma Camera Talk 3 weeks ago
Shall I add more X3f fill light? Sigma Camera Talk 3 weeks ago
SD15 IR shoot. Sigma Camera Talk 3 weeks ago
Petition to Sigma to make Foveon m43 Sigma Camera Talk 3 weeks ago
A quick Flower Shot Sigma Camera Talk 3 weeks ago
Quick and dirty DP2 Merrill highlight recovery example Sigma Camera Talk 3 weeks ago
Finally got the SD14 but now what are some decent lenses Sigma Camera Talk 4 weeks ago
When a lens is too sharp! Sigma Camera Talk 4 weeks ago
Why do SPP exported TIFFs lose original RAW X3F image data? Sigma Camera Talk 1 month ago
New Sigma SPP Modified version for better readability Sigma Camera Talk 1 month ago
RawDigger no longer free ... ver 1.0.x released as shareware Photographic Science and Technology 1 month ago
What exactly is a 'raw composite' image? Photographic Science and Technology 1 month ago
Blown out highlight from Foveon sensor - any suggestions? Sigma Camera Talk 1 month ago
Subject Isolation Sigma Camera Talk 1 month ago
Sigma DP3M - Should I? Sigma Camera Talk 1 month ago
Foveon red (and how to deal with it?) Sigma Camera Talk 1 month ago
RAW hi vs med....any difference? Sigma Camera Talk 1 month ago