That is interesting.
I am trying to grok why it would not work at infinity on a full frame
camera. I assume it must be vignetting though typically vignetting would
be more pronounced at full extension (i.e. in macro mode) and not at
infinity. There would be no reason I can think of as to why the parts of
the frame that work on an APS-C sensor would not also be good on a full
frame sensor.
Mark
On 1/6/2015 8:46 AM, Igor PDML-StR wrote:
Some PDMLers might have read about this new lens before, but I just
discovered and thought I'd share this information, as it might be of
interest some people here.
There is a new Venus 60/2.8 Ultra-Macro (up to 2:1) lens. As far as I
understand it has adjustable magnification. It's made in China.
Petapixel has s brief description of it:
http://petapixel.com/2015/01/05/venus-60mm-f2-8-ultra-macro-worlds-first-21-magnification-lens-infinity-focus/
It is sold on ebay for $375 OBO:
http://www.ebay.com/itm/Venus-60mm-f-2-8-2X-Ultra-Macro-Lens-2-1-Pentax-K-5-K-r-K-x-K-m-K-7-K20D-K110D-/191473268381?
(And it comes in various mounts: Pentax, Canon, Nikon, Sony Alpha).
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