TTArtisan launches the 250mm F5.6 Reflex

Just got this lens in. Actually quite good for a mirror lens. Good focus travel and remarkably sharp, even with the R7. Anyone coveting the Minolta 250 will not be disappointed in this lens. Here are some samples. Tight crop for resolution and FF for bokeh examples.


R7 100% crop.




R7




There rest are with R5 full frame shrunk to fit site.

Judging by the bokeh, the lens is not particularly bright. T8? Or even T11?

Kit. said:

Judging by the bokeh, the lens is not particularly bright. T8? Or even T11?

Click to expand...

I haven't done an exposure comparison yet, but T8 would make sense as the lens has a small diameter (67mm filter) and has a large image circle (no vignette correction in the above images) and an f/5.6 mirror has a large central obstruction. It is noticeably brighter than any of my 500mm f/8 mirrors, though. A full stop of variance between f and t is pretty typical of mirrors. Note that bokeh is somewhat limited by a 7ft MFD. Other than the foxglove shot, these photos are all fairly close to MFD.