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Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28) Review RSS Feed

Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28)

Reviews Views Date of last review
5 25,682 Sat April 8, 2017
Recommended By Average Price Average User Rating
100% of reviewers $24.80 8.60
Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28)

Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28)
Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28)
Tamron Adaptall 28mm f/2.8 (PFH-28 and CW-28)

The CW-28 was not the very first adaptall 28mm, that is the one pictured in pic 2: adaptamatic style perspex distance ring and general structure indicating its derivation. The stamp on the accompanying original case indicates its reference is PFH-28. Note that the dimpled rubber is not original, the rubber grips are well known for perishing with age on these earliest ones.
However the optical design (pic 3 - original box) does not appear to have changed with the structural revamp of the CW28.
There is also this Chinon 28mm f2.8 that may be derived from the cw28 - other lenses from this chinon series from the 1970's are certainly derived from the adaptalls.

Lens PFH-28 CW28
Focal Length: 28mm 28mm
Aperture: 2.8 - 16 2.8 - 16
Iris: 5 blades
Optical Construction: 7e/7g 7e/7g
Minimum Focus Distance: 25cm 25cm
Focus throw ~ 180 deg.
Filter Diameter: 55mm 52mm
Length (min/max): 44/48mm 42/ mm
Maximum Diameter 65mm
Weight: 256g 240g

Like all 1st gen adaptalls, there is a M42 style A-M (auto-manual) aperture switch. When using 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 a PK-M mount, set to "M" (flick to "M" to stop down at the moment of taking the picture).
Mount Type: Third-party (adapter required)
Price History:

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Forum Member

Registered: February, 2015
Posts: 93
Lens Review Date: April 8, 2017 I can recommend this lens: Yes | Price: $20.00 | Rating: 8 

Pros: Sharp enough, cheap
Cons: Flare
Sharpness: 8    Aberrations: 6    Bokeh: 9    Handling: 9    Value: 10    Camera Used: K3ii   

Not a bad lens. Sharp enough but lots of flare, which was expected but can be useful at times.
Photo of standardized test subject was taken wide open.
Junior Member

Registered: January, 2012
Posts: 27
Lens Review Date: January 31, 2012 I can recommend this lens: Yes | Price: $10.00 | Rating: 9 

Pros: cheap, easy to focus and great colors
Cons: none!
Sharpness: 7    Aberrations: 9    Bokeh: 9    Handling: 9    Value: 10   

Got this lens in a lot i bought in eBay, probably the best thing that was in the whole lot. I could tell how good of photos this lens takes the very first picture! i love it and i would recommend it defiantly considering the very low price!!
Junior Member

Registered: July, 2010
Location: USA Northern VA
Posts: 32
Lens Review Date: July 18, 2011 I can recommend this lens: Yes | Price: $45.00 | Rating: 10 

Pros: Sharp, the best wide angle lens I made!
Cons: None that I can think of.

This lens has treated me more then kindly! I have several great shot of scenic overlooks and mountain shots with it! This lens makes other 28 lenses I have used look like garbage! I would recommend this lens if you can find it, just find a 2 times adaptall to fit the mount and you are ready to go. I have several other Tamron lenses because of this one and I am happy with all of them, save a lot of money then some of the other brands and even some of the "slower" ones are incredlibly sharp and not as slow as it seems.
Junior Member

Registered: February, 2011
Location: California
Posts: 30
Lens Review Date: March 29, 2011 I can recommend this lens: Yes | Price: $19.00 | Rating: 7 

Pros: Inexpensive
Cons: Adapter problematic

The lens shown does not have the necessary adapter. The adapter will work in manual mode but i could not get it to work in any mode on my ZX-30 as that camera would not fire with this lens. I will comment more when I learn more about this lens and it's K adapter.
Loyal Site Supporter

Registered: September, 2010
Location: Hudson Valley, NY
Posts: 2,359
Lens Review Date: December 4, 2010 I can recommend this lens: Yes | Price: $30.00 | Rating: 9 

Pros: Nicely built and great sharpness
Cons: Need the Adaptall 2 KA mount- making lens more expensive

This is a nicely built lens. The focus is smooth and is a great example of a classic lens from the hay days of 35mm. The aperture is 1/2 stop wider than the SMC Pentax A 28. Focus range is nice, going down to less than 10", making it almost a macro (1:2.5 magnification ration)!

The Tamron Adaptall system was truly a great concept that no other manufacturer did well. It has allowed me to resurrect a 500MM Tamron with a new mount (PK). For the 28mm, a Pentax KA mount is strongly recommended. I really wish Tamron would make these mounts again (or someone would) as it adds to the usability of the lens substantially. The KA mount allows the lens to be used with any of the auto aperture cameras by including the activation pin found on fixed mount lenses. With this mount the Auto Aperture works perfectly and stop down metering is not required.

The down side of these mounts is they are starting to get scarce and adds an additional $30 to $50 or more to the price of the lens. This would make it less expensive to get a good used Pentax A mount lens of the same focal length. Switching mounts between lenses is not as convenient as a conventional lens change as you need an extra hand or two to do the swap (take lens off camera, hold camera body, hold lens one and two, swap mount between lens one and two, mount lens 2).

One important part of using this lens with PKA mount is to make certain the mount is correct with the position of the connections BEFORE mounting the lens to the camera. If you do not do this first, the lens might not mount correctly and may jam onto the camera body (scary thing to happen), and certainly won't work correctly. Also check the M-A switch: should be on A.

If you come across this lens at a good price and can also get the PK A adapter easily, I would go for this lens in a heartbeat. I have a second in an M42 mount to use with my macro bellows setup (M42 to PK A adapter from bellows to camera).

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