55mm Adapter for Elpro VIIa?

[Shac]

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I wonder if anyone can help (so far google hasn't nor any of the other obvious sites) - I have an Elpro VIIa that I would like to use on my 90mm Elmarit (second version). Under the mistaken impression a 14225 Ring was the answer I bought one - it isn't. Does anyone know the thread & pitch size of the VIIa? My rough measurement suggests 53mm but no idea about thread pitch.

Thank you in advance

David

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[farnz]

David,

 

I know that the Elpro VIb's thread pitch is 0.75 mm so it would make sense if the VIIa's thread pitch was the same but I regret that I can't confirm it. (As you probably know by now the 14225 adapts a Series 7 filter to a lens with a 55 mm filter thread.)

 

Pete.

[Shac]

Pete - thank you - yes I discovered it was only for filters. I'll keep trying on the web incl the -bay

Best

David

[wildlightphoto]

I used a 54mm-to-55mm step-up ring to use E55 filters on my 90 'cron so I don't see why a 55mm-to-54mm step-down ring wouldn't work for your Elpro.

[Shac]

Doug - thank you. I just ordered one

By the way I checked your site before I posted my question.

Best

David

[dkCambridgeshire]

These are the diopter strengths and thread sizes for Leica R Elpro supplementary close-up lenses:

 

Series VI and Series VII types:

Elpro VIa: 2.51 diopter M44 x 0.75

Elpro VIb: 4.92 diopter M44 x 0.75

Elpro VIIa: 1.66 diopter M54 x 0.75

Elpro VIIb: 0.75 diopter M54 x 0.75

 

Some of the earlier Leitz VIa and VIb c/u lenses are called Macrotar rather than Elpro but they are the same specification as the Elpro types.

 

 

Later 'Dual thread' and regular 55mm thread types:

Elpro 1: 2.51 diopter Dual thread M55 x 0.75 and M44 x 0.75

Eplro 2: 4.92 diopter Dual thread M55 x 0.75 and M44 x 0.75

Elpro 3: 1.66 diopter M55 x 0.75

Elpro 4: 0.75 diopter M55 x 0.75

 

I use modified Elpro and Macrotar c/u lenses with Leica X1 and X Vario digital cameras and the combinations give excellent results even when stacked e.g. three Elpro VIb lenses stacked onto the front of a Leica X1 via a 49mm filter adaptor ... and the same stacked combination on the front of the X Vario at the longest 46mm (70mm) zoom setting via a modified 43mm filter ring (43mm filter minus its glass, epoxied to a VIb Elpro)

 

Best wishes

 

dunk

[tobey bilek]

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You can adapt with a 54 to 55 step up ring. You will not like the results. Spacing is very critical with the Elpros and quality suffers. Find a proper 55 Elpro.

[Shac]

I found this on the bay - a Bower Series 7 to 55mm Step Adapter-Ring VII 55 mm. It just arrived and while not an engineering masterpiece it appears to do the job - at $4.95 hard to complain:rolleyes:

Thanks everyone for your help - much appreciated

David

[Shac]

I also followed Toby's suggestion of getting a 54 to 55 step down and that just arrived - works fine and actually has better threads than the Bower Series 7 to 55mm Step Adapter

Again thank you everyone for your help - most appreciated

David