Re: [Leica] Re: Bessa-T focusing accuracy

["Stanislaw B.A. Stawowy" <watteau@krakow.neurosoft.net>]

> Where *does* the Bessa stand in terms of accuracy relative to the M3, M2,
> LTM, etc?


Effective baselengths in mm = focusing accuracy

M3       - 62
M6 .85   - 59
>Bessa T - 58   
Screwmnt - 58 (II b-f, III b-g)
Nikon SP - 58
M2       - 49
M4,M4-2  - 49
M6 .72   - 49
Hexar RF - 41
Screwmnt - 41 (II - IIa, III-IIIa
M6 .58   - 40
CLE      - 28
Bessa R  - 24
CL       - 18

As you see, Bessa T will focus Noctilux as well, as your beloved M6 TTL .85
Special Edition LHSA Black Paint...
Also, screwmounts with 1.5x RF will do it as well... And Minolta CL(E)
is hopeless here... Will not focus even old Hektor 135/4.5 accurately....

Here is another table, found on Erwin Puts' website:

Focal length Aperture  Effective base length needed 
    50         2.0             12.5 mm 
    50         1.4             17.9 mm 
    50         1.0             25.0 mm 
    75         1.4             40.2 mm 
    90         2.8             28.9 mm 
    90         2.0             40.5 mm 
    135        4.0             45.6 mm 
    135        3.4             53.6 mm 
    135        2.8             65.0 mm 

So you see that Nocilux _can_ be focused wide open on Minolta CLE, 
albeit with great care. Also - you cannot use Hektor 135/4.5 SM
on M6 .58 wide open.. 


Jim Brick writes:
> So now everyone is wetting their pants over a camera that cannot possibly
> (well... one could get lucky) take sharp photographs with these lenses at
> wide open apertures. The very apertures that define Leica lenses

So Jim is completely wrong....................................



- -----                                
                                St.
                     (Stanislaw B.A. Stawowy)
              http://www.geocities.com/Stanislaw_Stawowy
            Echelon/Carnivore lines: Bob Black, Hakim Bey, 
           Ralph Klein, Sabotage in the American Workplace