they are pretty good, but i find that the 1.7 AF extender to be a bit low on contrast. i guess it flares more than the two L extenders that i also use some of the time. unfortunately, the L extenders don't add or support AF capabilities on any lens and really aren't compatible with much except A* lenses with focal length 300mm and up. i have used them on my FA* 400/5.6, but it's not supported. the small amount of AF that the extender gives helps get the sharpness through better focusing though, and Photoshop compensates some for the loss of contrast. i find it hard to manually focus quickly using the A2X-L extender, and tracking a fast moving subject that pauses only briefly makes it that much harder. of course, shooting without extenders, it's far faster to focus accurately because the viewfinder is brighter.
Herb... ----- Original Message ----- From: "Shaun Canning" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, May 15, 2004 8:19 PM Subject: RE: Point Pelee-Lots of big glass > Wow Herb that gives you an effective focal length of about 1000mm at > f4.5 (ish). What are the results like? I have a Tokina 300mm f2.8 and a > 1.7 AF TC (765mm @f4.5) and the results are pretty good. The SMC glass > can only make it better...
