dsjtecserv

Lives in United States Northern, VA, United States
Works as a Technical Director
Joined on Jan 21, 2005

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Subject Forum Last post
Prime VS Zoom - Same focal length - looks? Beginners Questions 1 day ago
Aren't ND filters supposed to be uniformly dark?! Open Talk 2 days ago
Polariser fail Open Talk 2 days ago
cropping picture - simulating longer focal length Open Talk 3 days ago
A prime fallacy Open Talk 1 week ago
Is This Filter Worth It Open Talk 3 weeks ago
Hyperfocal made simple Open Talk 3 weeks ago
Confused about FF DOF and Crop DOF Beginners Questions 3 weeks ago
ND Filter for Waterfalls Beginners Questions 4 weeks ago
Focal Length for product photo Beginners Questions 4 weeks ago
How do I mount this nodal slide - Help Beginners Questions 4 weeks ago
Confused about Circle of Confusion Beginners Questions 4 weeks ago
Bracketing theory. Open Talk 1 month ago
Ultra wide-angle lenses and (circular) polarising filters Beginners Questions 1 month ago
Repeated problem with Tiffen UV filter on my Nikon D90 cracking without impact Open Talk 1 month ago
Panorama with tilt shift lens Beginners Questions 1 month ago
Are Canon EF-S lens focal lengths adjusted for the crop sensor? Beginners Questions 1 month ago
Wide angle lens versus stitching together images? Beginners Questions 1 month ago
Canon 1.4x teleconverter-Should I return it? Open Talk 1 month ago
Focal length "cropped" for hand-held live view Open Talk 2 months ago
Landscape Shots; Focusing (1/3rd of pic rule) Beginners Questions 2 months ago
Dual Sensor Mode Open Talk 2 months ago
Why is depth of field too shallow in this f16 shot? Beginners Questions 2 months ago
Photoshop from CS5 to CS6 to CS7?? Open Talk 2 months ago
Acratech GPSS vs Arca-Swiss Monoball p0 vs ? Open Talk 2 months ago
What's so special about 35mm? Beginners Questions 2 months ago
Question about a photo I took With a polarizing Filter Beginners Questions 2 months ago
Full Frame vs. APS-C? Beginners Questions 2 months ago
What size do you crop for Facebook and Twitter to avoid pixelation Open Talk 2 months ago
Question on DOF: Crop sensor vs. Full frame Open Talk 3 months ago
Aperture, focus, and distance from subject Open Talk 3 months ago
Exporting with fixed dimensions and dpi Open Talk 4 months ago
Help me understand these DoF calculators Open Talk 4 months ago
Optimising Aperture for DoF: DIY Calculator Tool - feedback wanted Beginners Questions 4 months ago
Photo term explanation Open Talk 5 months ago
Weird vertical lines on photo Beginners Questions 5 months ago
Simple question: Wide angle lenses distort depth of field? Beginners Questions 5 months ago
Panorama method Beginners Questions 6 months ago
ff vs cc + faster lens Open Talk 6 months ago
DOF and sensor size? Beginners Questions 7 months ago
Equal focal lengths compared between APS-C and Full Frame. Beginners Questions 7 months ago
circular polariser Beginners Questions 7 months ago
Using CPLs for landscapes Beginners Questions 7 months ago
UV, Neutral density, Polarised filters - are they necessary? What brand best? Beginners Questions 7 months ago
Difference between PSD and Tiff? Open Talk 7 months ago
Trying to understand portrait 'compression' across the different sensor formats Open Talk 7 months ago
Quickly release straps Beginners Questions 8 months ago
Why does raising the mirror fix hot pixels on DSLRs? Beginners Questions 8 months ago
Long ND exposure question Beginners Questions 8 months ago
is there a difference between the images of crop sensor + equivalent lens for the same 35mm focal Beginners Questions 8 months ago