I need to buy a new telephoto lens as I intend to start shooting weddings and will need one. My current sigma lens (the £99 one) is certainly no good for that. I'm looking at either the Sigma 170-500mm APO or the Canon 70-200mm f/4L. Such a zoom as the one offered by the sigma isn't necessary, but I'd like about 300mm. I was thinking, if the canon optical quality is high enough I could just crop from 200mm.
Does anyone have experience with this lens, and know if the optical quality at 200mm is good enough to crop from. I know with my camera that cropping from 200mm to replicate a 300mm shot will leave me with an 8MP image and I don't think that should be a problem. The reason for being unsure about the sigma is I will be left with nothing between 85mm and 170mm so I could have problems.
I am using a crop body and my budget is about £400, so this is about the best I can come up with unless anyone knows of something I have missed.
Thanks.
Does anyone have experience with this lens, and know if the optical quality at 200mm is good enough to crop from. I know with my camera that cropping from 200mm to replicate a 300mm shot will leave me with an 8MP image and I don't think that should be a problem. The reason for being unsure about the sigma is I will be left with nothing between 85mm and 170mm so I could have problems.
I am using a crop body and my budget is about £400, so this is about the best I can come up with unless anyone knows of something I have missed.
Thanks.
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