RE: [OM] shades

[Winsor Crosby]

>  > Winsor Crosby [mailto:wincros@xxxxxxxxxxxxx] wrote:
> >  You then need to redesign the end of the lens barrel so that the
> >  rectangular shade only goes onto it in the correct position matching
> >  the rectangular film format. Then things can get real fiddly
> >  attaching and detaching unless the design is brilliant.
> This may be standard practice, but behind the front element
> of my (Canon) 20-35 zoom is a rectangular mask purportedly
> to assist in flare control. It still has a lens hood for the
> the front element - one of those sexy tulip-shaped ones <g> -
> which attaches via a bayonet fitting, and the lens is internal
> focussing, so no rotation.
>
> Don't some of the Leica lenses have rectangular hoods?
>
> Cheers
> Marc
> Sydney, Oz
I don't know, but they do have an outside groove around the end of
all the lenses that allow a bayonet lens hood with no line up and
twisting.  No Mickey Mouse slip on and clamp for this lens and screw
on for that lens.  Sorry.  Much as I like my Oly there are some
little areas that do not seem to be well thought out.

It occurred to me that one could experiment with flare control by
masking a lens hood with black tape to make the opening rectangular.
It probably would only work with one of the slip on hoods. But
orientation would have to be checked carefully.
--
Winsor Crosby
Long Beach, California

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