jtra

jtra

Lives in Czech Republic Prague, Czech Republic
Has a website at http://jtra.cz/
Joined on Mar 6, 2008

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Subject Forum Last post
Sirui and Gitzo Accessories Talk 2 weeks ago
Nikon 135mm f2. DC - sharp wide open or not until f4? Nikon SLR Lens Talk 2 weeks ago
Is this normal for a tripod Accessories Talk 3 weeks ago
Tripod, ballhead & technique test (Feisol 3442, Velbon Ultra LUXi L, Sirui K-30x, Joby Bh.X) Accessories Talk 3 weeks ago
Wich ball head Accessories Talk 3 weeks ago
A 'Nifty Fifty' Discussion .. Nikon SLR Lens Talk 3 weeks ago
Excellent 70-300 choice Third Party Lens Talk 3 weeks ago
The Tamron 24-70 goes back. Damn. Nikon SLR Lens Talk 3 weeks ago
Which lens do I need to achieve a shot like this? Nikon SLR Lens Talk 4 weeks ago
New user looking for Sirui tripod/ball head help Accessories Talk 4 weeks ago
Stuck pixels on D810 sensor Nikon FX SLR (DF, D1-D4, D600-D800) Talk 1 month ago
Tamron or Nikon 70-300mm F4.0-5.6 for D750 Nikon SLR Lens Talk 1 month ago
This is how my D610s sensor looks after 600 shots (Dust/oil spots) Nikon FX SLR (DF, D1-D4, D600-D800) Talk 1 month ago
D800 and camera shake Nikon FX SLR (DF, D1-D4, D600-D800) Talk 2 months ago
transition from DX to FX - lenses ? Nikon SLR Lens Talk 2 months ago
TC 1.4 + 85mm lens at f/5.6 = less diffraction than 120mm lens at f/8? Nikon SLR Lens Talk 2 months ago
(news) Flat lenses (metasurface) can be achromatic Photographic Science and Technology 2 months ago
Question regarding 300 F4 PF VR image quality , bokeh and "rendering" Nikon SLR Lens Talk 2 months ago
Sigma 50mm ART f/1.4 - What would you like to know Third Party Lens Talk 2 months ago
Nikon D810A for ALL purpose photography? (RAW capture mode) Nikon FX SLR (DF, D1-D4, D600-D800) Talk 2 months ago
Nikon D810a - will red LEDs finally look red? Photographic Science and Technology 2 months ago
Why hasn't nikon implemented 4k video in any of their dslrs yet? Nikon FX SLR (DF, D1-D4, D600-D800) Talk 2 months ago
Nikon 85mm f1.4G or Sigma 85mm f/1.4 EX DG Nikon SLR Lens Talk 2 months ago
Nikon's new 400 f2.8 vr fl and bokeh........... Nikon SLR Lens Talk 2 months ago
Tokina 24-70/2.8 anyone? Nikon SLR Lens Talk 2 months ago
The new 300/4 PF VR gethers light like 300/2.8 or 300/2? Nikon SLR Lens Talk 2 months ago
Nikon 85mm Prime at F8 Vs Nikon 55-200 set at 85mm at F8 Nikon SLR Lens Talk 2 months ago
The most important feature of a camera is a secret Open Talk 2 months ago
Cracked D800 body Nikon FX SLR (DF, D1-D4, D600-D800) Talk 3 months ago
Sigma 50mm 1.4 ART vs Nikon 50mm 1.8G Third Party Lens Talk 3 months ago
What EXACTLY makes bokeh good or bad? Examples please Nikon FX SLR (DF, D1-D4, D600-D800) Talk 3 months ago
Dynamic Range of lenses Photographic Science and Technology 3 months ago
Settings that affect RAW files Photographic Science and Technology 3 months ago
High noise on Nikon 85mm 1.8G? Nikon SLR Lens Talk 3 months ago
Optics, interference, or sensor response? Photographic Science and Technology 4 months ago
Sigma 12-24mm f/4.5-5.6 AF II DG HSM vs Tokina 16-28mm f/2.8 AT-X Pro (IF) FX Lens Nikon SLR Lens Talk 4 months ago
Nikkor 50mm F1.2 vs Sigma 50mm F1.4A vs Zeiss 55mm F1.4 Otus? Nikon SLR Lens Talk 4 months ago
new 20mm f/1.8G or 18-35mm f/3.5-4.5G? Nikon SLR Lens Talk 4 months ago
Tamron 24-70 f/2.8 Di VC USD Nikon SLR Lens Talk 4 months ago
New revolutionary sensor tech from Sony? Photographic Science and Technology 4 months ago
Nikon 10-24 worth it to get (to replace Tokina 11-16)? Nikon SLR Lens Talk 4 months ago
D800 and SB700 AF assist missed focus Nikon FX SLR (DF, D1-D4, D600-D800) Talk 4 months ago
Debugging D800 AF issues w/Speedlight AF assist Nikon FX SLR (DF, D1-D4, D600-D800) Talk 4 months ago
A7 evf with glasses & AF point selection Sony Alpha/NEX E-mount Talk 5 months ago
(For Nikon) Tamron AF 70-200mm f/2.8 Di LD IF Vs. Sigma 70-200mm f/2.8 APO EX DG HSM OS FLD Third Party Lens Talk 5 months ago
More 58 f/1.4 portraits Nikon SLR Lens Talk 5 months ago
D810 FLux Lines on Sensor?? Nikon FX SLR (DF, D1-D4, D600-D800) Talk 5 months ago
D750 Photographic Dynamic Range (PDR) and Read Noise Nikon FX SLR (DF, D1-D4, D600-D800) Talk 5 months ago
AF Fine Tune settings for multiple Tamron lenses? Nikon FX SLR (DF, D1-D4, D600-D800) Talk 5 months ago
50mm Primes... Nikon SLR Lens Talk 5 months ago