Dr Klaus Schmitt
Well-known member
Well, I am studying lenses since quite some time and was researching the history
of some, when I noticed the same reflection pattern (which is a hint for the lens
design) in an previously overlooked, ordinary lens I have...
Well, I tested it good for 330nm in my spectrometer and in theory it should have
no focus shift (or just a tad)...
So best is always to try it out, so here some first tests, sacrificing one of my last
Rudbeckias...
VIS:
UV:
Long story short - it has hardly any visible focus shift!
Look at these mites and their fine webs!! Pretty fine resolution it has.
More about it later ...
of some, when I noticed the same reflection pattern (which is a hint for the lens
design) in an previously overlooked, ordinary lens I have...
Well, I tested it good for 330nm in my spectrometer and in theory it should have
no focus shift (or just a tad)...
So best is always to try it out, so here some first tests, sacrificing one of my last
Rudbeckias...
VIS:
UV:
Long story short - it has hardly any visible focus shift!
Look at these mites and their fine webs!! Pretty fine resolution it has.
More about it later ...