RE: [Leica] What is the difference?

[Peterson Arthur G NSSC <PetersonAG@NAVSEA.NAVY.MIL>]

Moving the subject slightly, is there any hood that will clip-and-store in
reverse on the latest, pre-ASPH 35mm Summicron?  The hood that came with the
lens (12524) won't reverse at all, and the alternatives that will reverse on
other lenses (e.g., 12585 and 12504) are interfered with, when tried that
way on the 35mm lens, by the lens's focusing tab.

Art Peterson


- -----Original Message-----
From:	Kip Babington [mailto:cbabing3@swbell.net]
Sent:	Monday, July 31, 2000 12:12 PM
To:	leica-users@mejac.palo-alto.ca.us
Subject:	Re: [Leica] What is the difference?

Dan -

I have the IROOA, which has six lenses marked on a fairly wide chrome band,
and attaches to the lens with a double set of spring clips that let it mount
normally or reversed for storage on a 50mm (but not a 35mm) lens.  I've
never had (or even seen in person) an ITDOO, but it has a very thin chrome
ring at
the back with lenses marked on the black hood section, and according to my
accessory guide it has a "velvet lining for reverse positioning."  I can't
tell if it has the spring clips for regular positioning or not, but
certainly it wouldn't be as secure in the reverse position as the IROOA.
Also, if it will fit in reverse on a 35 Summaron then it must be either
wider or shallower than the IROOA, which will NOT fit in reverse on my E39
Summaron (interferes with the infinity lock) but which fit fine in reverse
on the DR Summicron I once had.

I also have the impression that the ITDOO is more expensive when available,
although there were a couple of  IROOAs that went for pretty fancy prices
recently on ebay..

BTW, the front rim of the IROOA will accept and hold a generic (i.e. cheap)
55mm plastic lens cover, the kind with the two spring loaded clips.  Very
quick to get into action as compared to storing the hood reversed on the
lens with the appropriate Leica plastic cover to keep the dirt off.  I don't
know if the ITDOO works that way or not.

Cheers,
Kip

Dan Post wrote:

> I have had the shades- IROOA, and ITDOO and other than the markings
> difference, is there any other way to tell them apart?
> The IROOA seems to be marked as such, and has about four lenses listed as
> being suited for the shade. The ITDOO seems to be marked only for the 5 cm
> Summicron or 3,5cm Summaron.... Both seem to be otherwise identical in
> dimensions and fit.
> Thanks for any clarification!
> Dan