The Pentax FA 645 80-160mm f/4.5 Lensis a medium telephoto zoom lens with a 35mm equivalent focal length of 63-126.5mm and a maximum aperture of f/4.5. The autofocus lens can stop down to f/32 and features multiple types of low dispersion glass elements throughout its 11 element and 10 group construction. This is benefited by the use of a Super Multi Coating that helps eliminate flare and ghosting.

The lens can focus as close as 3.3' during use and has an eight blade diaphragm to help create smooth out-of-focus areas. Also, it can accept 77mm filters via a front thread and includes a lens hood. The 80-160mm also features the ability to turn the front of the lens while the hood is attached for easily adjusting your filters.

Pentax 645 Mount    63-126.5mm (35mm Equivalent)    Aperture Range: f/4.5-32    Extra-Low Dispersion Glass Elements    Super Multi Coating    Construction: 11 Elements / 10 Groups    Minimum Focus Distance: 3.3'    Eight Blade Diaphragm    Front Filter Thread: 77mm    Petal-Shaped Lens Hood

The front of the lens can be rotated while the hood is attached allowing for easy rotation of filters like circular polarizers

35mm focal length equivalent of 63-126.5mm

Aperture range of f/4.5 to f/32

Angle of view of 47° to 21.5° which equates to 38° to 17.5° on Pentax 645 digital cameras

Lens construction of 11 elements in 10 groups

Extraordinary and extra-low dispersion glass elements help to minimize chromatic aberrations and maximize sharpness

Accepts 77mm threaded filters

Minimum focusing distance throughout the zoom range is 3.3'

Super Multi Coating increases light transmission as well as helps to eliminate ghosting and flaring

Works with both film and digital formats

Aperture ring and focusing distance scale

Eight diaphragm blades for smooth out-of-focus areas

Related Questions and Answers

Q: 1. The lens is front-focusing and I can not correct it with the 'Apply One' setting in the fine adjustment menu.How do I find out if this lens is in the 645z database or not ? If it is only adjustable with the 'Apply All' setting It would be not so convenient to remember to zero the setting every time i change lenses. Any info appreciated. Thanks.

A: Please email us at photo@a href= http://bhphoto.com target= _blank bhphoto.com/a for assistance with your inquiry.

Q: 2. If used on another camera via an adapter, will it still have full manual control?

A: Yes. It has an aperture ring.

Q: 3. Can this lens be used with the Pentax 645nII (the 120 film camera)?

A: Yes, the Pentax smc FA 645 200mm f/4 IF Lens is compatible with the Pentax 645NII.

Q: 4. Hello,I would like to know how this lens performs. Being that there is no review yet, the only thing left to do is ask for your help. I will use this for the Pentax 645z that will be bought this week at your store alongside the 55mm. Is the IQ any good? It is not cheap, but half the price of the new 28-45. Is there any huge gap between the two?Thank you :)

A: The Pentax 33-55 will give you excellent image quality, with 11 elements and 8 groups, using low dispersion glass. It will give you smooth out of focus areas, with an 8 blade aperture diaphragm.

Q: 5. please can someone tell me how to set this lens sot auto focus?

A: You have to pull in the furthest ring for manual or automatic focusing

Q: 6. Hi there, I am new to Medium Format Cameras, does this lens have Vibration Control?

A: Shake reduction built into the lens is already old and redundant technology. The newest technology is Pentax's shake reduction done on the sensor instead of the lens. Already rolled out on models like the K1 and KP. Let's hope they include it into the next version of 645.

Q: 7. If used on another camera via an adapter, will it still have full manual control?

A: It depends on the adapter. Ask the adapter Co.

Q: 8. Will this lens work on the Pentax K-3 III?

A: Not directly, Pentax smc FA 645 400mm f/5.6 ED IF Lens has a Pentax 645 medium format native mount.Pentax K-3 Mark III DSLR Camera has a K-mount. You can use a lens adapter to connect Pentax 645 lenses to Pentax K-mount cameras. All the current adapters are strictly under full manual operations.

Q: 9. Is this lens compatible with the Pentax 645n medium format film camera?

A: The Pentax smc FA 645 33-55mm f/4.5 AL Lens is compatible with the Pentax 645N camera.

Q: 10. Can you please tell me if the fine focus adjustment apply one setting works for this lens, without having to use the 'apply all' setting? it would be not so convenient to have to remember to zero the setting every time I change the lens. Thank you.

A: You will want to contact the manufacturer directly for assistance with this inquiry.