the Canon FD 28mm is a nice nice lens. Beautiful look and a nice price. One thing it is lacking is a convinient focus throw betweem 3m (9ft) and infinity. It´s less than
half an inch or 1cm.
Are there recommendations for nice price adaptable lenses with manual focus and longer, managable focus throw between the range for 3m to infinity?
Also, my question, if 0.5 wide angle adapter are acceptable in comibination with a 28mm regarding focussing and ok optical performance
The rear bayonet mount is the depth of several filter rings...you have to build up the rings and glue them together so they become a solid mount, so that the front element of your 20mm fd will clear the rear element of the .7 adapter...as front elements on wider lenses bulge outwards, only you can make the call for how high you have to go, relative to the lenses you would use this adapter with (buy enough filter rings to accomplish this)...you also need a rail system to take a lens support, as t