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Re: 2x teleconvertors
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Re: 2x teleconvertors
hello:i like the sigma 150-500mm because i would not need the tcs.i checked nextag and they want $491.70 for a sigma apo 170-500mm f5-6.3 dg telephoto zoom lens o.15x,normally priced at $1057.problem is the ad said "for digital slrs" but did not specify"canon mounts".i could not find a way to contact them. -
Re: 2x teleconvertors
ef lenses i noticed at b&h photo that they had a canon ef f4-5.6 3 af for $170 and an ef canon 70-300mmf14-5.6 is usm for $549.would either of these be good for shooting birds and wildlife.as discussed above i think a tc would not work on these lenses.are there other ef canon lenses that might be apprpriate?thanks for all… -
Re: 2x teleconvertors
I don't know of any TC that will fit on a Canon EF-S lens. Doubling the focal length isn't as simple as it sounds at first. If you double the focal length you will lose 2 stops of aperature. In practice this means that you will loose auto focus capability if your lens is not f2.8 at it's longest focal length (unless you…
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