Might not the extreme depth of field on an 8mm lens make this
less-than-ideal?
I habve in mind an 18mm lens I once had, complete with a large chip on the
front element. It was a problem on a sunny day, with multiple bright spots
spoiling the image. I duly blacked out the chip - which immediately became
visible even on a cloudy day as soon as the lens was stopped down beyond
f/5.6!
Granted, the effect on the rear element may be different...
--
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Chuck Norcutt
Sent: 07 November 2005 01:03
To: olympus@xxxxxxxxxx
Subject: [OM] Re: I quite like using the fisheye on the E-1
A fundamental optical rule: All parts of a lens contribute to all parts of
an image.
If the defects are sizeable you can black them out such that they can't
contribute anything to the image except a bit of diffraction around the
black edges.
Chuck Norcutt
swisspace wrote:
> I think this is maybe because the fungus is around the edge of the
> lens and hence probably outside the view of the sensor. I haven't used
> it much on an OM yet.
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|