going below 70cm MFD, experience?

[overexposed]

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So since the rangefinder only goes until 70cm close focal distance, did you guys used extension tubes on your M systems to reduce the MFD?

with what results?

i'd like to go much closer to my subjects with my newly acquired 21mm 1.4

 

cheers

mirko

 

 

[a.noctilux]

Hello Mirko,

which camera you plan to use ?

With liveview, you may use a ring like OUFRO, 1.0cm but with your 21mm *, the close range would be only close range

with few possible distance settings.

 

* you can try 21mm

in my view, longer lens would be more practical with less distortion

I  would use one of micro/macro lens (SLR with adapter) in the 50-60mm range that I already have

[John McMaster]

The 21mm will be too wide to use with an OUFRO, it gets pretty close with a 50mm (I mostly used an f1.0 Noctilux)

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john

Edited March 22, 2022 by John McMaster

[overexposed]

On 3/22/2022 at 5:57 PM, a.noctilux said:

Hello Mirko,

which camera you plan to use ?

With liveview, you may use a ring like OUFRO, 1.0cm but with your 21mm *, the close range would be only close range

with few possible distance settings.

 

* you can try 21mm

in my view, longer lens would be more practical with less distortion

I  would use one of micro/macro lens (SLR with adapter) in the 50-60mm range that I already have

i am using a M10M so far.

i dont intend to do macro, but if i could get close to 50-40cm would be nice

[a.noctilux]

6 hours ago, overexposed said:

i am using a M10M so far.

i dont intend to do macro, but if i could get close to 50-40cm would be nice

As I wrote somewhere, with 21mm lens close focus feature was put in Leitz/Leica lenses...old design.

I have Super-Angulon 4/21mm lens with mfd 40cm and another rare lens Super-Angulon-R 3.4/21mm with mfd 20cm.

Now I know why because adapting a "ring" or close-up lens is not that practical and with large dof, using these 21mm lens close is not a problem.

Tri-Elmar-M 16/18/21 can focus to 50cm, I don't know why this limitation to 70cm in the new design.

Very easy to make close focus with wide lens if the manufacturer want to do.

 

Let's be more practical ...

Out of curiosity, I had a look on my S-A 21mm , the difference in "advancing" the optical cell is about 2 to 3 mm from focus 70cm to 40cm.

Having a ring of two or three mm for your 21mm lens ( @overexposed to focus to 40-50cm ) is not possible.

Edited March 24, 2022 by a.noctilux

[TheBestSLIsALeicaflex]

Although I prefer lenses with a hard stop at .7 m, a trick people use is to have the extra .2 or .3 m measured on their strap, or generally on their arm, to get a rough idea for focusing.  Not an issue with small aperture wides because of the large DOF.