wfektar

wfektar

Lives in United States United States
Joined on Feb 25, 2010

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Subject Forum Last post
What IS the ColorTemperature 17 minutes after sunset with high red clouds? Open Talk 1 min ago
How to process a 6D file to match the DR of a Sony or Nikon Canon EOS-1D / 5D / 6D Talk 11 min ago
Sigma now releasing Geometric and Diffraction MTF charts for lenses Photographic Science and Technology 2 weeks ago
Quick Test of Olympus 50mm f/1.8 Legacy Lens Astrophotography Talk Forum 2 weeks ago
why over-price [mirrorless] then crash. Why not price it correctly? Open Talk 4 weeks ago
Show me YOUR "lonely" benches ............. Micro Four Thirds Talk 6 months ago
Do high quality Aluminum Tripods exist vs Carbon Fiber? Accessories Talk 6 months ago
Need guidance on how to start astrophotography with telescope & DSLR Astrophotography Talk Forum 8 months ago
tilt shift question Open Talk 8 months ago
GNU Octave, or…? Photographic Science and Technology 8 months ago
MTF: I think I Isolated the D610 Directional AA filter's MTF Curve Photographic Science and Technology 8 months ago
M81 and M42 Astrophotography Talk Forum 8 months ago
M101, SkyTracker, and 200mm lens Astrophotography Talk Forum 8 months ago
Messier 64 - the "Black Eye Galaxy"! Astrophotography Talk Forum 8 months ago
What are Zeiss manual lenses? Looks like they're coming for FE mount Sony Alpha/NEX E-mount Talk 8 months ago
polarizing filter - how to set it ? Open Talk 8 months ago
Tired of chasing my tail. Can't decide ;-( Open Talk 8 months ago
Equatorial mount or not? Astrophotography Talk Forum 8 months ago
See through clothing - the filter that strips you naked. Open Talk 8 months ago
Need Small P&S For Use As Light Meter Open Talk 8 months ago
Best built lenses ever? Open Talk 9 months ago
Messier 13 from last night! Astrophotography Talk Forum 9 months ago
Advice on Sky Tracker Astrophotography Talk Forum 9 months ago
Whirlpool Galaxy inverted due for background galaxies! Astrophotography Talk Forum 9 months ago
Telescope vs. Camera Lens Astrophotography Talk Forum 9 months ago
First try on M51 - the "Whirlpool Galaxy"! Astrophotography Talk Forum 9 months ago
median method creates blurry images? Astrophotography Talk Forum 9 months ago
It was clear for a few hrs last night ! Astrophotography Talk Forum 9 months ago
Filters Sony Alpha/NEX E-mount Talk 9 months ago
Novoflex vs. Arca Swiss vs. RRS Accessories Talk 9 months ago
What lens do you use? Astrophotography Talk Forum 9 months ago
Do ND filters increase diffraction? Photographic Science and Technology 9 months ago
How is size of entrance pupil used to set aperture opening for a given f-stop? Photographic Science and Technology 9 months ago
Which gears to bring for taking the milky way? Astrophotography Talk Forum 9 months ago
The Large Magellanic Cloud Astrophotography Talk Forum 9 months ago
D7100: noise as function of ISO vs exposure time Astrophotography Talk Forum 9 months ago
What are the bit depths on the NEX and A7 cams raw files? Sony Alpha/NEX E-mount Talk 10 months ago
Saturn passing behind the moon. Astrophotography Talk Forum 10 months ago
Spot the Error Photographic Science and Technology 10 months ago
SMI (Sensitivity Metemerism Index) -- is it important? Photographic Science and Technology 10 months ago
Rosette Nebula Astrophotography Talk Forum 10 months ago
Best Looking Camera- YOUR TAKE? Open Talk 10 months ago
Definition of Macro Lens Open Talk 10 months ago
Advice for someone new to astrophotography, and some C&C Astrophotography Talk Forum 10 months ago
Pleiades Blue Ice Astrophotography Talk Forum 10 months ago
Identification and Measurement of Photographic Filter Spectra with Low-Cost Equipement Photographic Science and Technology 10 months ago
Measured Transmission Curve of Photographic Filters Photographic Science and Technology 10 months ago
The most detailed images of Pluto here...... Astrophotography Talk Forum 10 months ago
Battery holders for AA batteries Astrophotography Talk Forum 10 months ago
Silly Signs... Sony Alpha/NEX E-mount Talk 10 months ago