The Macro Lenses
Two Schneider Kreuznach Symmar lenses and two M – Componon macro lenses are available in Exakta 66 mount. These are:
From left to right: M – Componon f4/28mm, Symmar – S f5.6/135mm, Symmar – S f5.6/180mm, M – Componon f4/50mm,
in Exakta 66 mounts
To see the technical specification of these lenses, click here (scroll down).
Aperture values of Macro-Componon lenses
One of Schneider’s brochures on the Macro-Componon lenses
Note that half stops are indicated by a dot on the lens aperture ring.
In my humble opinion, this is a crazy way to label a
lens, so here is my conversion to f/ stops:
|M – Componon f4 28mm||M – Componon f4 50mm|
|Number on lens||Actual aperture||Number on lens||Actual aperture|
|16 + ˝ click||f/19 ?||•||f/19|
|32 + ˝ click||f/32 ?|
|32 + two ˝ clicks||f/45 ?|
|Note: Schneider’s chart says that their no 32
equals f/32. This must be wrong. If it
is equivalent to half the exposure of the previous full
position, it must be equivalent to f/22.
In fact, these lenses stop down beyond the smallest marked numeral. The assumed additional values are indicated in my charts above with a question mark.
The two Symmar lenses are marked with normal f/-stop numbers.
With all four macro lenses, the aperture numbers are printed “upside down” in comparison with other lenses: they are designed to be read from in front of the camera, instead of from behind it. This also works well when one is doing macro work with the camera on a copying stand, pointing down.
To go onto the next section, click below
To read about using the macro lenses on the Pentacon Six bellows, click here.
To see the section on Pentacon Six macro tubes, magnification and exposure factors, click here.
To return to the introduction to macro photography, with links to all macro sections, click here.
© TRA July 2006 Latest revision: October 2018