[zokier]

Mirror objectives do exist for dslrs: https://advancedphototech.wordpress.com/lenses/mirror-mirror...

[wdfx]

I have an old Nikon 500/8 ; gotta be honest, it's not very good.

[buildbot]

Some are not very good, but others are. I currently have 4 different mirror lenses, two are not great but the other two are very good. One of which is an AF mirror lens!

One thing is that they are extremely sensitive to shocks causing mirror misalignment - so if your lens has ever been dropped, it’s probably lower performance than before due to the mirrors being out of wack.

[wdfx]

Mine's from 1974 according to a serial number lookup, so who knows what it's been through in the last 50 years.

[srean]

Thanks for the link. Learned something new.