Sears 28mm f/2.8 MC Macro Auto. If you’re looking to purchase this lens I always check Adorama and Ebay for good deals. It helps me if you purchase it through one of these links here in this review. When you purchase through these links it financially enables me to devote time to develop this site further. Thanks for the help! -Todd

Barrel
Metal.

Weight
8.2 oz (233g)

Focus Ring
Rubber on Metal.

Close Focus
8 inches (0.2 meters).

Filter Threads
52mm, Metal.

Aperture Ring
Metal.

Diaphragm
6 blades stopping down to f/22.

Mount
Mine came in Pentax-A Metal Mount.

Made in
Korea

 

 

Sharpness
f/2.8: Very soft with a huge amount of spherical aberration and a bit of coma but surprisingly decent contrast.
f/3.5: Still very soft with tons of spherical aberration but less coma.
f/4: Hardly sharpens up with still lots of spherical aberration and still showing coma.
f/8: A little bit sharper but still very poor.

Vignetting
Quite a bit of vignetting from f/2.8 to f/5.6 and only really clears off around f/8.

Distortion

Common amount of Barrel Distortion for a 28mm lens.

Recommendations
On MF Camera
Optics:         ★
Mechanics:  ★ ★ ★ ★ ★
Ergonomics: ★ ★ ★ ★
Usefulness:  ★ ★ ★
Availability:   ★
Overall:         ★ ★

On AF Camera
Ergonomics:  ★ ★ ★
Overall:          ★
Out of 5

This lens is a disappointment because it seems they put more effort in making the lens a macro lens that they forgot about optical performance. Or perhaps it was so terrible they had to make it a macro lens to sell it. Either way this lens is not very useful at any stop because once it starts to sharpen up you now have to deal with diffusion at smaller apertures.

Perhaps I have a poor copy but this lens performed really poorly. However, the build quality is solid and very easy to use.

If you stumble upon one try it out because it could be a good lens and I just have a bad copy. If there are better copies out there then a 28mm macro is a great lens to have.

 

Did this review help?
My hopes are to take the time to continue developing this website with more test photo based reviews. If you are ever interested in purchasing this lens or other photography equipment please do so through these links here in this review. I always check Adorama and Ebay for good deals. This helps support my family and allows me to take more time for the site. The best part is this site is free for you and I link good deals I find!

Sometimes these links will actually give you better deals then typical retail prices! I personally buy from the links I have listed whether looking for new gear or fun old stuff. I can personally attest to their good & safe service from years of experience. Thanks again to you, our readers, for supporting us! -Todd