Originally posted by fsge Irix is already selling 11 and 15mm lenses in K mount.
Long macro are not easy to find, it took me 3 years to buy an FA*. Sigma never released 150mm in K mount, only available for us was 180 mm f3.5 (not so easy to find), whereas current version is f2.8 and not available in K mount either
I am not aware of this 180mm f5.6!
For fungus try UV light, you wont need to open it and it should stop developing
Irix lenses tend to be more expensive than Laowa Venus. However they look nicely made and the tests show impressive performance for the price.
Some Laowa Venus lenses are very aggressively priced, quite a bargain for what you get!
Even more so if you find a 'generic' Laowa on Ebay with no mark.
IIRC the 60mm macro can be found that way, but I'm not 100% sure, I haven't checked.
Same thing with the Sigma 150mm, I believe that there might have been a manual focus version in PKA mount, though I am not sure.
I am positively sure that before the AF version of the Sigma 180mm there were two MF versions.
I have the slower one: f/5.6 180mm.
I even wrote a review:
Sigma 180mm F5.6 APO Macro UC Lens Reviews - Sigma Lenses - Pentax Lens Review Database
EDIT:
checked about the 150mm Macro, and found out that you are right:
"The Sigma 150mm F2.8 Macro is a full-frame lens featuring in-lens stabilization and hypersonic focusing. This lens was never produced in the Pentax mount despite early hits that it would be."
Read more at: [URL="https://www.pentaxforums.com/userreviews/sigma-150mm-f2-8-ex-dg-os-hsm-apo-macro.html#ixzz5RjwEThXX"[/URL]
I have just checked Ebay, the Laowa 60mm Macro 2:1 is available only with the proper Laowa brand. No dirty cheap options anymore!
Last edited by cyberjunkie; 09-21-2018 at 06:40 AM.