Brian,
I ran into a situation like that with one of my first adapters, where
the adapter was just too thick to allow me to get to infinity. This was
a threaded adapter, and I simply polished the surface with emery paper
on a flat surface until I got it right.
Won't work with a bayonet mount, though.
Jim Nichols
Tullahoma, TN USA
On 8/11/2019 5:13 AM, Maggie wrote:
Hello all, Brian Swale here.
I've been trying various OM Zuiko lenses on my "new" A7, and the
results are rather mixed.
Firstly, I have come to the conclusion that the nice lens adapter I
bought has one significant secret flaw - it seems to 'not quite' allow
lenses to focus to infinity. Where I am shooting tests from ( our
bedroom balcony) in the distance at about 5 km (3 +- miles) are large
hills, and all the way back to the camera are intermediate targets.
So, using the hot-focus indicator in the screen, those hills show as
being out of focus and the detail of the downloaded images also shows
that. So I need to buy another which is a pity as the build of the
adapter I have is otherwise very nice.
Secondly, indications seem to be that only prime lenses will give a
sharp image. The 50/1.8 and the 100/2 are excellent. The jury is still
out on the others - I will try new tests with the camera on tripod
this coming week. I had thought that the 35-7-/3.6 excellent film zoom
would make a great versatile walk-around lens, but so far the images
disappoint. Similar for the 35-80 and the 35-105. The 75-150
disappointed. The 21, 24, 28, 40 and 85 need re-testing and I haven't
got to the 135 and 200 ( and larger) yet.
We are still in winter with fresh snow on the hills to give some
contrasty details.
Cheers, and back to lurk mode. Brian
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|