JCL
Well-known member
I am looking to get a decent long prime to go with my 20D to snap some birdies. I'm after 500-600 reach (+ 1.6 x). I want the option of handholdability & transportability, as much of my work will be in rainforest (coupled with a 580 Speedlite).
I can't justify the big bucks lenses, and am currently oscillating between (a) 300/4L coupled with 2x TC and (b) 400/5.6L coupled with 1.4x TC.
Can anyone advise which to go for? Does the quality drop off more with the 2x, even if on a 300mm lens?
I'd like to still be able to use AF, and whereas the TC on both options takes this above the Canon official AF/f stop compatibility (f5.6, I think), I've heard rumours that AF can actually work at f8. Is this true?
Thanks.
I can't justify the big bucks lenses, and am currently oscillating between (a) 300/4L coupled with 2x TC and (b) 400/5.6L coupled with 1.4x TC.
Can anyone advise which to go for? Does the quality drop off more with the 2x, even if on a 300mm lens?
I'd like to still be able to use AF, and whereas the TC on both options takes this above the Canon official AF/f stop compatibility (f5.6, I think), I've heard rumours that AF can actually work at f8. Is this true?
Thanks.