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mamiya/sekor  1:6.3  f=400 mm

m42_mamiya_400_6.3

This lens is really long physically.  It has only three lens elements, so I was sceptical about its optical quality.  I was pleasantly surprised when I had the opportunity to test this lens on a Canon EOS 300D digital camera using an M42 to Canon EOS adapter.

The lens performs quite well.  Colors and contrast are very good, and resolution is also higher than expected.  In critical lighting situations there are some chromatic aberrations, but that is two be expected for such a long telephoto lens without the use of special glass elements.  You have to use a tripod with this lens at all times.

Construction:

3 elements in 3 groups

Angle of View:

6 °

Minimum Focusing Distance:

9 m (30 ft.)

Minimum Aperture:

f/32

Filter Size:

72 mm

Lens Hood:

screw-in

Weight:

935 g

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m42_mamiya_400_6.3_tripod

mamiya/sekor 1000 DTL with mamiya/sekor 400 mm 1:6.3 mounted on a tripod using the built-in tripod mount.
This gives much better stability compared to using the camera tripod mount.  It also enables very easy
and fast change from horizontal to vetical format.