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Petri TTL

Posted by Bengt Köhler Sandberg 2013-01-28

Petri TTL

Introduced in: 1974

Technical info

Lens mount: M42
Shutter speeds: 1/1000s to 1s + B (Bulb)
Light meter: Through the lens, center weighted (ISO 25 - 1600)
Battery: PX625 (1.3v mercury)
Flash: Flash hot shoe + X sync connection (sync 1/60 sec)
Weight: 700g

Depth of field button

Takes standard 135 film
24×36 mm negative size.

Operating + Sounds
Petri TTL


Great size and brightness.

Exposure meter (match needle)

Shutter type:

Focal plane
Horizontal traveling cloth curtain.

All mechanical.

Build quality:

Very good and solid.

Look and feel:
Like the look of it but it feel a bit bulky and bigger than it need to.
Button and dials have a nice feel to them.
The shutter button feels a bit misplaced but is something one can get used to.


A brick and a workhorse that probably will work another +35 years.
But it's quite heavy and bigger than most M42 SLRs.

The film advance lever is a single stroke and it needs to get pulled 180° and the shoulder strap can be in the way for this.
Not exactly a big problem but it can be a bit annoying.

It's also quite noisy.

Thumbs up:
Build quality and feel

All mechanical and battary is is only for the light meter.

Thumbs down:

Big and heavy
Mercury battery

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