Archived posting to the Leica Users Group, 1997/04/24

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Subject: Re: Leica slide projectors
From: <>
Date: Thu, 24 Apr 97 22:44:40 +0100

Flat Field lens is the common type for slide projectors. They work fine 
with glass-framed slides. The Curved Field type is unique in that it 
gives a sharp image for "unglassed" slides. These have a tendency to bend 
somewhat during projection due to the heat from the projector lamp 
(corners can not be sharp at the same time as the center of the slide).
So, if you are using unglassed frames I would suggest to go for the CF 
type. Both types will work, but the CF gives optimum performance in that 
case. Not many manufacturers actually have such a special lens type.

Leica has the COLORPLAN 90 mm f/2.5 and COLORPLAN 90 mm f/2.5 CF. The CF 
lens costs 4.500 Belgian Francs, that is more or less 130 USD, taxes 
The SUPER COLORPLAN 90 mm f/2.5 is only available in flat field type. The 
Super Colorplan is said by Leica to be even better than the Colorplan. 
Given the high quality of the latter, however, I do not really see much 
need in upgrading to the Super Colorplan, especially since I am using 
unglassed slides. Note that the Super Colorplan can not be mounted on a 
Leica P150-P155 projector.

All Colorplan lenses are MUCH better than the Hektor 85 mm f/2.8 which 
normally comes included with the projector.


>I too, am looking to buy a projector.  Could any one with experience with
>the Leica P300 IR
>(B&H $500) comment on it ?  Am I correct in assuming the P2002 to be an
>overkill for home usage,
>monetarily and otherwise speaking.  Also, where can I buy the projector
>without the lens ?  
>And what are the practical differences among the Flat Field, the Curved
>Field and the Super 
>Color Plan 90/2.5 lenses ?
>Thanks in advance,
>- Phong
>Doan huu Phong                                Doan & Associates, Ltd.
>                                Tel. (508) 266-9428

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