Auto Tele Rokkor - PF 1:2.8 f=135mm


We know two different versions of the 135mm 2.8 Auto Tele Rokkor, that are quite different.

The first version is the classical Auto Rokkor type. It has a big DOF lever in the center of the lens and does not transfer the aperture value to the camera. Stopping down is mandatory for through-the-lens metering with newer cameras. The aperture number can not be seen in a viewfinder with aperture-read-in function.

The second version is smaller and lighter. It uses a DOF wheel and a slim aperture ring in the center of the lens. The functionality is equivalent to version 1. This design can be seen again with the first intermediate version of the MC Tele Rokkor - PF 1:2.8 f=135mm.

Auto Tele Rokkor - PF 1:2.8 f=135mm Version 1
Focal length: 135mm fixed
Aperture range: 1 : 2.8 - 22
Aperture type: Automatic iris,
6 blades glossy, black oxidized
Optical design: 6 elements / 5 groups
Detailed optical design, front to mount: 4 elements / 3 groups
- aperture -
2
elements / separate
Close-up distance: 1.5m
Filter size, mount type: 55mm fixed
Shade type: Snap on
Length from mount plane, focus at infinity / close-up: 94mm / 105mm
Diameter: 64mm
Weight: 531g
Lens coating: Single coating, yellow-blue complementary
DOF type: Lever type
Supported aperture/metering functions: Stopdown metering: Yes
Automatic diaphragm: Yes
Meter-coupled TTL: No
Aperture read-in: No
Supported camera modes: M, manual: Yes, manual aperture stopdown necessary
A mode: Yes, manual aperture stopdown necessary
S mode: No
Program mode: No
Front view:

Black painted front
Overview:

Huge black aperture ring
Rear view:

Silver mount
Detail 1:

The DOF lever fills a cut out region in the focus tube



Auto Tele Rokkor - PF 1:2.8 f=135mm Version 2
Focal length: 135mm fixed
Aperture range:: 1 : 2.8 - 22
Aperture type: Automatic iris,
6 blades glossy, black oxidized
Optical design: 6 elements / 5 groups
Detailed optical design, front to mount: 4 elements / 3 groups
- aperture -
2 lenses / separate
Close-up distance: 1.5m
Filter size, mount type: 55mm fixed
Optical design: Snap on
Length from mount plane, focus at infinity / close-up: 94mm / 105mm
Diameter: 64mm
Weight: 531g
Lens coating: Single coating, yellow-blue complementary
DOF type: Wheel shaped lever type
Supported aperture/metering functions: Stopdown metering: Yes
Automatic diaphragm: Yes
Meter-coupled TTL: No
Aperture read-in: No
Supported camera modes: M, manual: Yes, manual aperture stopdown necessary
A mode: Yes, manual aperture stopdown necessary
S mode: No
Program mode: No
Front view:

Black painted front
Overview:

Smaller aperture ring, slim lens design.
Rear view:

Black mount
Detail 1:

Small wheel-like DOF lever