Is there any chance that the issues you are experiencing are being contributed to by camera movement and atmospheric haze?
My "solution" is the Carl Zeiss Tele-Tessar 300mm f/4 C/Y plus Mutar II 2x. Both are pretty cheap today.
Michael
Depending on the mount, in AF the Sigma 170 to 500 5.6, stopped down to F6 to 11, but I would go with a Sigma or Tonkia 400 APO 5.6 I have both in Minolta A mount, pretty sharp, I made 11X14 with some crop without issue. I think the Sigma is a 6 element lens, not sure about the Tonika. Tamron also made a 400 5.6. The sharpest mirror lens is the first generation Vivitar S1 600mm f6, made by Perkin-Elmer.
I'm not sure why you're excluding mirror lenses. I've got a 500 f/8 mirror lens for my Nikkormat FT2 that's very good, and focuses down to (IIRC) about ten feet. It's actually lighter than the 400 f/8 I have in Adaptall/M42 mount, as well as easier to steady because there isn't that long, hollow tube to vibrate.
Well, it's the character of the bokeh that really rubs me the wrong way with them. If it weren't for that, I think they would work great for me.
That does look decent and affordable! Thanks.
Thank you for the leads!
this one--APO 50-500mm F4.5-6.3 DG OS HSM--is usually relatively popular among the birding crowd (I don't know what most of those letters mean. DG is "full frame", i.e. 35mm, OS a HSM I have no idea):
APO 50-500mm F4.5-6.3 DG OS HSM | LENSES | PRODUCTS | Sigma
This page is about Sigma's APO 50-500mm F4.5-6.3 DG OS HSM.www.sigma-global.com
It comes in Canon EF, Nikon F, Pentax K, and Sony A which is that same as the Minolta AF right?
this one--APO 50-500mm F4.5-6.3 DG OS HSM--is usually relatively popular among the birding crowd (I don't know what most of those letters mean. DG is "full frame", i.e. 35mm, OS a HSM I have no idea):
APO 50-500mm F4.5-6.3 DG OS HSM | LENSES | PRODUCTS | Sigma
This page is about Sigma's APO 50-500mm F4.5-6.3 DG OS HSM.www.sigma-global.com
It comes in Canon EF, Nikon F, Pentax K, and Sony A which is that same as the Minolta AF right?
"DG" = Sigma's way of saying it was optimized for Digital use. They never did say what that optimization was.
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