I think it's easier Moose's way. You should get a rectangular
projection from the film gate whose corners should *just* intersect the
hood. I tried this myself and discovered I needed a fairly bright light
source behind the camera and reduced room illumination. Damned hard to
do with a DSLR though unless there's a compatible film body.
Chuck Norcutt
Moose wrote:
> Daniel Sepke wrote:
>> Since he hasn't piped up yet I will share the Moose approved hood testing
>> method. You will need the following; a light box or other light source, some
>> wax paper, your camera with lens attached and the hood under test. First
>> thing is to install the hood on the lens and place the camera nose down on
>> the light box (obviously with the lens cap off!). Then open the back of the
>> camera and place a piece of the waxed paper across the film gate. You should
>> then see a projection of the vignetting if there is any from the lens and
>> hood combination.
>>
>
> Interesting. Actually, I've always done the reverse, illuminating the
> film plane and observing the image of the film opening on paper laying
> on the hood.
>
> Next time, I'll try them both.
>
> Moose
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|