Lives in Slovak Republic Bratislava, Slovak Republic
Works as a Manager of historic centre at DPB, a. s.
Joined on Feb 28, 2007
About me:

Knowledge leads to isolation and loneliness.

dopravopat's current gear

Canon EOS 30D
Canon EOS 60D
Canon EF-S 18-135mm F3.5-5.6 IS
Had it converted to IR in 2014, using is more since then.
Seems to have one dead pixel on sensor, but ACR handles it without problems.
Use it only for IR as it has no "hot-spot" issue or it is barely visible. Got it with another EOS 60D that my father now has. AF is slow and inaccurate, overall wobbly construction compared to my high-end Sigma lenses. Only the old first generation Sigma 18-50mm F2.8 EX DC is equally bad in AF and mechanical construction.
Sigma 150-500mm F5-6.3 DG OS HSM
Sigma 17-50mm F2.8 EX DC OS HSM
Sigma 18-35mm F1.8 DC HSM Art
Survived two drops from about 1 meter on asphalt concrete. Still working without problems.
Optically excellent. AF inconsistent and even with the USB Dock impossible to calibrate, this costs one star in the rating. I would need way more calibration points than the 16 provided by Sigma, 55 would be a good starting point. Once calibrated, the lens focuses consistently - but only on the calibrated spots.
Sigma 50-100mm F1.8 DC HSM Art
Sigma 50-150mm F2.8 EX DC APO OS HSM
Sigma 50mm F1.4 EX DG HSM
Tripod collar cannot be removed and gets it the way when rotating the zoom ring.
Too big and heavy compared to the older model. But that is the only bad thing to write about.
Sigma 8-16mm F4.5-5.6 DC HSM
Other gear:
  • Sigma 18-50mm F2.8 EX DC The old, non macro version, 67 mm filter thread, keep it as a backup
  • Sigma 50-150mm F2.8 EX DC HSM The old Mk I version with front focusing issue at 150 mm
  • Sigma EF-530 DG Super Flash
  • Sigma EF-610 DG Super Flash

dopravopat's previous gear

Sigma 10-20mm F4-5.6 EX DC HSM
Sigma 30mm F1.4 EX DC HSM
Sigma 85mm F1.4 EX DG HSM
Sold it just to get the 8-16.