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
What Killed Sigma 50-150 f/2.8? Third Party Lens Talk 47 min ago
How does Canon's new dual pixel raw enables to refocus in post? Photographic Science and Technology 1 hour ago
The Naked Truth About Bokeh Nikon SLR Lens Talk 2 days ago
How many shutter actuations do you REALLY get from a camera? Nikon FX SLR (DF, D1-D5, D600-D800) Talk 3 days ago
Nikon 105mm f1.4 - Its Official - Its Expensive Nikon SLR Lens Talk 6 days ago
When is the D750 supposed to be replaced? Nikon FX SLR (DF, D1-D5, D600-D800) Talk 1 week ago
D750 live view "focus points" Nikon FX SLR (DF, D1-D5, D600-D800) Talk 3 weeks ago
D750 failed shutter Nikon FX SLR (DF, D1-D5, D600-D800) Talk 3 weeks ago
Dpreview testing of the D810 and D750 low light AF Nikon FX SLR (DF, D1-D5, D600-D800) Talk 4 weeks ago
Nikon 24 1.8G or Sigma 24 1.4 Art ? Need some feedback Nikon SLR Lens Talk 1 month ago
Anybody using D750 with zfinder/lcdvf or similar for LV manual focus? Nikon FX SLR (DF, D1-D5, D600-D800) Talk 1 month ago
Sigma 50mm 1.4 ART vs Nikon 50mm 1.8G Third Party Lens Talk 2 months ago
Comes the D810 beater from Pentax for 1800 USD Nikon FX SLR (DF, D1-D5, D600-D800) Talk 2 months ago
24-120 f/4 not so hot at the long end? Nikon SLR Lens Talk 3 months ago
DxO reviews the D5 Nikon FX SLR (DF, D1-D5, D600-D800) Talk 3 months ago
Focal length of smartphone cameras Mobile Photography Talk 3 months ago
if you could have 4 Nikon lens for free,,,,,,, Nikon SLR Lens Talk 3 months ago
Tamron 15-30 2.8 not comaring as expected againt Olympus 7-14 Nikon SLR Lens Talk 3 months ago
Nikon D5 Motion Blur Images Issue Nikon FX SLR (DF, D1-D5, D600-D800) Talk 3 months ago
Nikon d610 walk around lens Nikon SLR Lens Talk 3 months ago
Tamron 70-300vc moon shot Third Party Lens Talk 4 months ago
Tripod help and advice, for possibly the Sirui K-30X ball head Accessories Talk 4 months ago
24 mm lens advice Nikon SLR Lens Talk 4 months ago
New user looking for Sirui tripod/ball head help Accessories Talk 4 months ago
Stuck pixels on D810 sensor Nikon FX SLR (DF, D1-D5, D600-D800) Talk 4 months ago
Fast wide angle prime or... Nikon SLR Lens Talk 4 months ago
Owner Opinion: D5 @ Low ISO... Nikon FX SLR (DF, D1-D5, D600-D800) Talk 4 months ago
Nikon FX 28-300 VC vs Tamron 28-300 Pieza Drive VC Nikon SLR Lens Talk 5 months ago
D5 vs D750 vs D810 Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
Horrible!!! Nikon SLR Lens Talk 5 months ago
zoom or prime for wide-angle? Nikon SLR Lens Talk 5 months ago
Looking for a FX wide for around $500 Nikon SLR Lens Talk 5 months ago
D5 captures F1 crash. Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
Cruising to Alaska: Buy nikon 24-85 f3.5-4.5 vr or Sigma 24-105 f4 art Nikon SLR Lens Talk 5 months ago
Depth Rendition, controlled test 2 Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
Which ballhead for Feisol CT-3472LV Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
DR-5 for astrophotography focus Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
24-120/4 vs 70-200/4 Nikon SLR Lens Talk 5 months ago
Apodization and your lenses Nikon SLR Lens Talk 5 months ago
Depth Rendition, controlled test Nikon FX SLR (DF, D1-D5, D600-D800) Talk 5 months ago
24-120/4vr vs 18-35G and Tamron 70-300vc comparison Nikon SLR Lens Talk 5 months ago
Expert Opinion needed , Sigma ART , micro-contrast and depth rendition Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago
AF-S NIKKOR 24-120mm vs 24-70mm for D810 pairing Nikon SLR Lens Talk 6 months ago
Iconic “Soap Bubble Bokeh” Trioplan 100mm f/2.8 Returns After 40 Years Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago
D750 noisier than D800? Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago
Nikon hates focus peaking (it almost got into D750) Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago
85mm again, can't decide whether to keep Sigma or 1.8G Nikon SLR Lens Talk 6 months ago
$270 Bargain Third Party Lens Talk 6 months ago
My D600/D610 AF back focuses in tungsten light with fast primes but is ok in normal light Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago
16-35 vs. 17-35 vs. 18-35 Nikon FX SLR (DF, D1-D5, D600-D800) Talk 6 months ago