Compact TTL auto focus flash unit for early Pentax AF SLR cameras (see below), complete with instructions and batteries

• Compact auto flash unit
• Dedicated auto operation
• TTL flash control system
• For all exposure modes
• Autofocus (AF) illuminator
• Guide number 20m/66ft
• Thyristor fast recycling
• For Pentax SFX & SFXn
• For Pentax SF1 & SF1n
• For Pentax SF7 & SF10
• Not for any later models
• Boxed with instructions
• Includes AA batteries

This is a great little flashgun for early Pentax AF SLR cameras, complete, boxed and in very good condition. It has dedicated auto operation and TTL flash control, and works just like an original Pentax flash on suitable SF cameras including the SFX, SFXn and SF7 (see the Compatibility section below for a full list). Please note that it's NOT suitable for any later film or digital cameras.

It's simplicity itself to use - just slide the flash into the camera's hot shoe and switch on. The viewfinder indicates when the flash is charged, and the correct shutter speed and/or aperture are set automatically, depending on the exposure mode. Flash ready light and test button provided, plus auto check light which confirms correct exposure after you've taken the picture (also shown in the viewfinder with many cameras). The TTL (Through The Lens) flash control system offers the most accurate exposures, by measuring the flash reflected off the film actually during the exposure. TTL mode works at any aperture, and takes account of filters, bellows and other exposure factors automatically.

It is much more powerful than the camera's built in flash, with a guide number of 20m (66 feet) with ISO 100 film. Expected range in program mode is up to 6.7m (22 feet) with ISO 100 film, and 13.4m (44 feet) with ISO 400 film. In other modes, longer ranges may be available - for example, setting maximum aperture on an f/1.7 lens will give a theoretical range of up to 11m (36 feet) with ISO 100 film, and double this with ISO 400. As always with flash, actual range will depend on the conditions. Autofocus (AF) illuminator provides assistance for the cameras focusing system in low light. This works by projecting a red beam onto the subject (up to around 5m/16ft), which the camera can then use to focus - in complete darkness if necessary.

This independent Cobra 300AF flash is very compact and lightweight, at under 100mm (4 inches) tall on the camera, and a mere 175g (without batteries). Powered by four standard alkaline AA batteries (supplied), which are inexpensive and easily obtainable. Thyristor circuitry reduces recycling times and power consumption at closer distances. Auto power off system shuts down the flash when it's not in use. Captive battery compartment which cannot be dropped or lost. Standard hot shoe fitting with locking ring for secure mounting.

An excellent little flash for Pentax SF users and collectors!

Condition: Excellent+++ (8.5/10)
The flash is in fully working order (checked on our SF7) and very good condition. All features work as expected, including dedicated operation on compatible cameras. Cosmetically it shows just normal signs of use with some surface marks here and there in the plastic finish, but no cracks, splits or deep scratches. The box is showing signs of age but complete, and the instructions are in good condition.

The battery contacts are clean with no signs of corrosion, and overall it's in nice shape!
Pictures in this listing show the actual item offered for sale.

Complete and boxed with original instructions, plus 4x AA batteries

Compatibility
This flash is suitable for the first SF range of Pentax 35mm film AF SLR cameras including the SFX, SFXn, SF1, SF1n, SF7 and SF10, ONLY.

It's NOT suitable for later Pentax AF cameras such as the Z, PZ, MZ, ZX or *ist ranges. Although the fitting and contacts appear the same, Pentax made some changes to the dedicated flash system on these cameras, and many earlier independent flash units like this one don't work on these models. NOT suitable for Pentax digital cameras, or any other makes.