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doubice · 05/07/07, 06:10 PM

Johannes,

The goggles magnify the finder image for better focusing accuracy. The magnification ratio is 1.5x, which also means that the lens keys in the M4's 90mm finder frame.

If you took the goggles off, you would need a separate 135mm finder or, would have to key-in the finder manually. Most importantly though, you focus would be off, because the goggles affect the linearity of the focusing action.

A short answer - don't do it....

The 2.8/135mm Elmarit M came in two version - first had a scalloped focusing mount and a two-piece telescoping lens hood, the second version had a finely ribbed focusing mount and a one-piece telescoping hood. The second version used the same optical formula as the Elmarit-R that you own for your SL2. Generally, both are good lenses, with the second version having a better reputaion for sharpness.

There were of course other 135mm lenses made for the M bodies: Hektor 4.5/135mm, Elmar 4/135mm, Tele-Elmar 4/135mm and the current Apo-Telyt 3.4/135mm - in order of their introduction. The best one is the latest Apo Telyt, followed very closely by the 4/135mm Tele Elmar. If one takes cost to performance ratio into consideration, the Tele-Elmar wins by a wide margin.

All the best,

Jan

05/07/07, 06:10 PM	#2 (permalink)
doubice Erfahrener Benutzer Join Date: 01/09/04 Location: Vancouver Posts: 759	Re: Elmarit 135 2.8 Goggles Johannes, The goggles magnify the finder image for better focusing accuracy. The magnification ratio is 1.5x, which also means that the lens keys in the M4's 90mm finder frame. If you took the goggles off, you would need a separate 135mm finder or, would have to key-in the finder manually. Most importantly though, you focus would be off, because the goggles affect the linearity of the focusing action. A short answer - don't do it.... The 2.8/135mm Elmarit M came in two version - first had a scalloped focusing mount and a two-piece telescoping lens hood, the second version had a finely ribbed focusing mount and a one-piece telescoping hood. The second version used the same optical formula as the Elmarit-R that you own for your SL2. Generally, both are good lenses, with the second version having a better reputaion for sharpness. There were of course other 135mm lenses made for the M bodies: Hektor 4.5/135mm, Elmar 4/135mm, Tele-Elmar 4/135mm and the current Apo-Telyt 3.4/135mm - in order of their introduction. The best one is the latest Apo Telyt, followed very closely by the 4/135mm Tele Elmar. If one takes cost to performance ratio into consideration, the Tele-Elmar wins by a wide margin. All the best, Jan