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
Is Nikon D810 with 24-120mm still a good buy? Nikon FX SLR (DF, D1-D5, D600-D850) Talk 2 months ago
Spectacular Bokeh: Wavelength Dependence Nikon SLR Lens Talk 2 months ago
What will make you ugrade : d750---->d760, d810---->d820 or d850 Nikon FX SLR (DF, D1-D5, D600-D850) Talk 3 months ago
D750 Shutter Issue - Reproducing it Consistently Nikon FX SLR (DF, D1-D5, D600-D850) Talk 3 months ago
Who uses the Sigma 135mm f/1.8 DG HSM ART ? Third Party Lens Talk 3 months ago
Nikon D750 Shutter or Mirror Issue - Help. Nikon FX SLR (DF, D1-D5, D600-D850) Talk 4 months ago
Need Some Help Choosing Between Two Lenses Nikon SLR Lens Talk 5 months ago
16-35 vs. 17-35 vs. 18-35 Nikon FX SLR (DF, D1-D5, D600-D850) Talk 5 months ago
Sigma 135/1.8 art test shots Third Party Lens Talk 5 months ago
Would you buy a tamron 24-70mm with a small chip in front element? Third Party Lens Talk 5 months ago
Nikon 24 1.8G or Sigma 24 1.4 Art ? Need some feedback Nikon SLR Lens Talk 6 months ago
Sigma 135/1.8 released; looking forward to comparisons vs Nikon 105/1.4 Third Party Lens Talk 6 months ago
Look vs. Sharpness a.k.a. 1.4G vs. Art Nikon SLR Lens Talk 6 months ago
Lenstip review - Sigma 135mm f1.8 Art Third Party Lens Talk 7 months ago
24-120mm F4 samples at f4! Could someone help me out? Nikon SLR Lens Talk 7 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 8 months ago
Sigma 135 1.8 Art first review Third Party Lens Talk 8 months ago
The Naked Truth About Bokeh Nikon SLR Lens Talk 9 months ago
Does anyone have both 105mm f/1.4 and 105mm f/2 dc? Nikon SLR Lens Talk 10 months ago
Expert Opinion needed , Sigma ART , micro-contrast and depth rendition Nikon FX SLR (DF, D1-D5, D600-D850) Talk 10 months ago
24-85 3.5-4.5G ED VR & 24-120 4G ED VR Comparison and Overall IQ Nikon SLR Lens Talk 10 months ago
D750 live view "focus points" Nikon FX SLR (DF, D1-D5, D600-D850) Talk 11 months ago
How to Share D810 Small JPEGs via Cellphone, in the field? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Nov 18, 2016
Nikon D 750 : incomplete image Nikon FX SLR (DF, D1-D5, D600-D850) Talk Nov 6, 2016
Bokeh and rain. Nikon SLR Lens Talk Nov 5, 2016
Lens Microcontrast 2 Nikon SLR Lens Talk Oct 28, 2016
Do older lenses have better bokeh? Open Talk Oct 24, 2016
HMM... D750: Err bug :-( Nikon FX SLR (DF, D1-D5, D600-D850) Talk Oct 24, 2016
Weird AF tune issues with D750 Nikon FX SLR (DF, D1-D5, D600-D850) Talk Oct 20, 2016
D750 and App for Smart Phone? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Oct 18, 2016
First impressions: Samyang 135mm f2- Nikon AE Third Party Lens Talk Oct 11, 2016
Does anyone use the dpad lock switch? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Oct 10, 2016
Sigma 50mm discrepancy Third Party Lens Talk Oct 8, 2016
Any possible D750 replacement announcement this year? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Oct 6, 2016
How does Canon's new dual pixel raw enables to refocus in post? Photographic Science and Technology Sep 30, 2016
$270 Bargain Third Party Lens Talk Sep 30, 2016
Is the ERR code on the D750 a warranty repair? And less than happy people Nikon FX SLR (DF, D1-D5, D600-D850) Talk Sep 17, 2016
D750 failed shutter Nikon FX SLR (DF, D1-D5, D600-D850) Talk Sep 12, 2016
What Killed Sigma 50-150 f/2.8? Third Party Lens Talk Sep 3, 2016
105mm/1.4 G vs. Guess the Lens! Nikon SLR Lens Talk Sep 2, 2016
How many shutter actuations do you REALLY get from a camera? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Aug 27, 2016
Nikon 105mm f1.4 - Its Official - Its Expensive Nikon SLR Lens Talk Aug 24, 2016
When is the D750 supposed to be replaced? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Aug 23, 2016
Dpreview testing of the D810 and D750 low light AF Nikon FX SLR (DF, D1-D5, D600-D850) Talk Aug 3, 2016
Anybody using D750 with zfinder/lcdvf or similar for LV manual focus? Nikon FX SLR (DF, D1-D5, D600-D850) Talk Jul 24, 2016
Sigma 50mm 1.4 ART vs Nikon 50mm 1.8G Third Party Lens Talk Jun 20, 2016
Comes the D810 beater from Pentax for 1800 USD Nikon FX SLR (DF, D1-D5, D600-D850) Talk Jun 18, 2016
24-120 f/4 not so hot at the long end? Nikon SLR Lens Talk May 31, 2016
DxO reviews the D5 Nikon FX SLR (DF, D1-D5, D600-D850) Talk May 29, 2016
Focal length of smartphone cameras Mobile Photography Talk May 24, 2016