Sigma 18-200mm F3.5-6.3 DC

Announced Feb 14, 2005 •
Lens | Canon EF, Nikon F (DX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha | 885
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By: amphotography (May 19, 2015)
Posted to: Open Talk
Hey everyone, I have a question about a black streak/line that is appearing in some of my photos, with different darknesses in each. I'll attach some photos below. Is it a hair particle? It's much more noticeable in the first photo compared to the second.
The gear i have now: Canon eos 350d (rebel xt) Sigma 18-200 DC 3,5/6.3 Canon ef 100mm macro USM (non L version) I also have a light stand and a multi-purpose umbrella with a Speedlite 580ex first gen. I shoot a wide variety of things, from macro to portraits to events to high speed, but I'm still a starting photographer. I'd love to have a new camera, but maybe a new lens would benefit me more. I am willing to spend up to about 1500€ (something like 2000 dollars or 1300 pounds) A good...
Hello all, a little premise to explain my question: my old Sigma 18-200 f/3.5-6.3 (no stabilizer, from back in 2005) worked fine with my 350D, but the AF chokes on my 60D when at full tele. To make a long story short, it exhibits very strong front-focusing, sometimes as bad as tens of meters. I have narrowed it down to it being somewhat inompatible with the phase-detection AF, since it works fine in live view (ie. contrast-detection AF, the same that the 350D had through the viewfinder too)...
Hello there,at long last I upgraded from a 350D to 60D. It only took me 8 years. ;) I'm also going to get a Sigma 10-20 f/4-5.6 in the coming weeks, but that's for another post.I have been fiddling with the video mode, and I noticed that AF Quick seems to be slightly off. I tried several times with my trusty 50/1.8 at f/4.5, ISO 100, 1/50" shutter, on a tripod. I set the center point focus on a creeper plant grid and let it focus, switched to MF and started recording. While recording, I...
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