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Phoenix Konstantin
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My silver My Silver Tamron 689/T-135 Auto Adaptall 1 (1st gen) 135mm F2.8

Structurally distinct from the more common CT135, with a perspex distance ring and lettering around the front end as for the adaptamatic instead of a nameplate, but optically very similar (identical?) - a standard 4 element design. All metal construction apart from the perspex, there are both black and silver versions. Although the optical diagram on an original box indicates 5 elements the rear element is just a flat/filter with a ~33mm threaded ring holding it in.
The "689" reference number is off an original accompanying case. However a user manual accompanying another example was labelled "T-135".
Note that the rubber grips tend to perish with age.

Focal length: 135mm
Open F value: 2.8
22 Minimum aperture: 22
Minimum focusing distance: 1.5m
Focus: ~ 320deg, anti-pentax.
Filter size: 55mm
Weight: 375g
Maximum diameter X Overall length: 64.5mm x 77mm
Aperture blades: 9
Built in small extendable hood


Like all 1st gen adaptalls, this has a M42 style A-M (auto-manual) aperture switch. When using this lens with PK-M mount in manual (green button), or with PK-A mount in aperture priority (Av) mode, make sure this is set to "A". To use Av mode with PK-M mount, set to "M" (flick to "M" to stop down at the moment of taking the picture).

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Taken on: April 18, 2020
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Camera: Sony ILCE-7RM2, 1/1250 sec, ISO 160 (more info) (hide info)
Camera: Sony ILCE-7RM2
Lens: ----
Exposure Time: 0.001 sec (1/1250)
ISO: 160
Exposure Bias: -1.3 EV
Flash: Off, Did not fire
Exposure Program: Aperture-priority AE
Exposure Mode: Auto
Metering Mode: Multi-segment
White Balance: Auto
Color Space: Uncalibrated
Software: DxO PhotoLab 2.3.2
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