best canon telephoto lens sports image
Trish the
I have a Canon Rebel XT and 2 lenses
1) 18-55mm standard lens
2) 75-300mm telephoto lens III
What would a 2x tele convereter lens do for me?
I do a a lot of landscape shots. Does the quality change?
Answer
A 2x TC will double the range of your 75-300mm to 600mm. This is nice for wildlife and sports photography, but for landscapes you'd generally use a wide angle lens.
Tele converters do degrade image quality and they also require more light. The more powerful the TC, the more pronounced this becomes. So a 2x TC degrades image quality more than a 1.4x TC. And since your 75-300mm zoom is a consumer grade lens to begin with (as is the Canon 70-300mm), stacking a 2x TC on it probably won't win you any photography competitions. Still, it can be a fun item to have in your camera bag.
A 2x TC will double the range of your 75-300mm to 600mm. This is nice for wildlife and sports photography, but for landscapes you'd generally use a wide angle lens.
Tele converters do degrade image quality and they also require more light. The more powerful the TC, the more pronounced this becomes. So a 2x TC degrades image quality more than a 1.4x TC. And since your 75-300mm zoom is a consumer grade lens to begin with (as is the Canon 70-300mm), stacking a 2x TC on it probably won't win you any photography competitions. Still, it can be a fun item to have in your camera bag.
Which telephoto lens would be best for me?
massmama
I have the Canon Rebel XS with the kit lens and I want to buy a telephoto lens.
I need help sorting out all the lingo. For example, what is DG, and whats the difference between f/4.0-5.6 IS and f/4.0-5.6 III? Canon vs Sigma?
I will mostly be shooting people, sports and occasionally landscapes.
Answer
Personally I would stick with a Canon lens over Sigma. Third party lenses are rarely as good as the Canon lenses. Also camera companies design their lenses with future technology in mind. They do not release this information to third party makers . There is a good chance that sometime in the future the third party lenses will no longer work correctly with new cameras.
The lingo means the following.
DG: Is Sigma's designation for digital only lenses. These lenses are designed to be used exclusively on digital cameras with APS-C sized sensors like your Rebel. They will not work on full frame digitals or film cameras.
F4.0-5.6 IS means the lens is a variable aperture lens with image stabilization. The max aperture changes from F4 at the wide end of the zoom to F5.6 when zoom all the way out. On a 70-300mm lens the max aperture will be F4.0 at 70mm and F5.6 at 300mm.
F4.0-5.6 III means that it is a variable aperture zoom and that is the 3rd addition of the lens.
For Canon telephoto zooms I would look at either of these two.
Canon EF 70-300mm F4.0-5.6 IS about $600
Canon EFs 55-250 F4.0-5.6 IS about $250
The 70-300mm III is not really a very good lens. You would be better off spending a few dollars more and getting the 55-250 over this lens.
Personally I would stick with a Canon lens over Sigma. Third party lenses are rarely as good as the Canon lenses. Also camera companies design their lenses with future technology in mind. They do not release this information to third party makers . There is a good chance that sometime in the future the third party lenses will no longer work correctly with new cameras.
The lingo means the following.
DG: Is Sigma's designation for digital only lenses. These lenses are designed to be used exclusively on digital cameras with APS-C sized sensors like your Rebel. They will not work on full frame digitals or film cameras.
F4.0-5.6 IS means the lens is a variable aperture lens with image stabilization. The max aperture changes from F4 at the wide end of the zoom to F5.6 when zoom all the way out. On a 70-300mm lens the max aperture will be F4.0 at 70mm and F5.6 at 300mm.
F4.0-5.6 III means that it is a variable aperture zoom and that is the 3rd addition of the lens.
For Canon telephoto zooms I would look at either of these two.
Canon EF 70-300mm F4.0-5.6 IS about $600
Canon EFs 55-250 F4.0-5.6 IS about $250
The 70-300mm III is not really a very good lens. You would be better off spending a few dollars more and getting the 55-250 over this lens.
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