have you seen the Teleplus 2x macro converter in classifieds, they are designed to give 1:1 with 50mm lens what it would do with your macro i do not know. , davidxgreen is the seller he may be able to help. it has the electrical contacts for in body aperture control and is £65
1 have full manual version, not used much, this was with the FA50 @ f1.7 attached

Comment by redbusa99 posted on Elements in teleconverters... at 06/02/2013 - 09:58

just outside your limit but close a Zenit Helios 44M-4 58mm f2 came with my father in law,s old Zenit 11 he gave me last year along with a photax 135 f3.5. just put it on K5 and did a quick snap across the roof tops. straight raw to jpeg conversion ,i was quite surprised at the result but have not used it since. think i will be having revisited this pic.

Comment by redbusa99 posted on Lens Shootout: Pentax Prime Lenses 50-55mm at 01/02/2013 - 20:32

Comment by redbusa99 posted on Graphics Card at 01/02/2013 - 01:19

Comment by redbusa99 posted on swap my limiteds at 27/01/2013 - 15:08

from the DA21. clearing the local woods

Comment by redbusa99 posted on Winter Fuel at 26/01/2013 - 11:04

had a stroll in the snow, at least i had a warm house to go back to not like these creatures. they graze the local common as has always been done and it is now an area of special scientific interest due to the rare flora , fauna and butterflies etc.

Comment by redbusa99 posted on A Mother's Love at 26/01/2013 - 09:57

Comment by redbusa99 posted on Hyperfocal distance on a DSLR at 25/01/2013 - 11:46

Comment by redbusa99 posted on Glasses with transition lenses. at 25/01/2013 - 11:02

Comment by redbusa99 posted on Glasses with transition lenses. at 22/01/2013 - 12:01

Comment by redbusa99 posted on Why use 'old' glass? at 13/01/2013 - 09:27