As close as my eyes can tell, my 70-150 retains it's focus throughout
the zoom range.
Moose
Mark Marr-Lyon wrote:
I had noticed that after I reassembled the lens, it is not quite parfocal
over the zoom range. The plane of focus shifts a small amount when
zooming. Is this normal? If not, how is it fixed? The only adjustment
I saw was in the front group, and I couldn't seem to get it any better
with that.
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