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Pentax Lens Review Database » Film Era Pentax K-Mount Lenses » A Prime Lenses
SMC Pentax-A 50mm F2.8 Macro Review RSS Feed

SMC Pentax-A 50mm F2.8 Macro

Sharpness 
 9.6
Aberrations 
 9.2
Bokeh 
 8.7
Handling 
 9.3
Value 
 9.5
Reviews Views Date of last review
37 184,689 Fri September 9, 2022
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Recommended By Average Price Average User Rating
100% of reviewers $141.28 9.54
SMC Pentax-A 50mm F2.8 Macro
supersize


Description:
The SMC Pentax-A 50mm F2.8 was the first Pentax macro lens to offer a fast aperture of F2.8. This lens supports auto metering and offers 1:2 (half life-size) reproduction.

The front element is sufficiently recessed that no lens hood is needed.



SMC Pentax-A 50mm F2.8 Macro
© www.pentaxforums.com, sharable with attribution
Image Format
Full-frame / 35mm film
Lens Mount
Pentax K
Aperture Ring
Yes (A setting)
Diaphragm
Automatic, 6 blades
Optics
6 elements, 4 groups
Mount Variant
KA
Check camera compatibility
Max. Aperture
F2.8
Min. Aperture
F22
Focusing
Manual
Min. Focus
24 cm
Max. Magnification
0.5x
Filter Size
49 mm
Internal Focus
No
Field of View (Diag. / Horiz.)

APS-C: 32 ° / 27 °
Full frame: 47 ° / 40 °
Hood
Not needed
Case
Hard case HA-90
Lens Cap
Plastic clip-on
Coating
SMC
Weather Sealing
No
Other Features
Diam x Length
63 x 40 mm
Weight
220 g
Production Years
1984 to 1988
Engraved Name
smc PENTAX-A MACRO 1:2.8 50mm
Product Code
28190
Reviews
User reviews
Features:
Manual FocusAperture RingAutomatic ApertureFull-Frame SupportDiscontinued
Price History:



Add Review of SMC Pentax-A 50mm F2.8 Macro
Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 31-37 of 37
Senior Member

Registered: October, 2009
Location: southern california
Posts: 220

2 users found this helpful
Review Date: February 13, 2010 Recommended | Price: $150.00 | Rating: 10 

 
Pros: Very sharp, solid build
Cons: none

the sharpest lens I own... and I own the 31mm limited. Can render a bit cool in some situations, but that could be the camera WB

Thanks
Scott
http://www.flickr.com/photos/29075740@N08/
   
Pentaxian

Registered: December, 2009
Location: Montreal/Vermont
Posts: 2,160

1 user found this helpful
Review Date: February 12, 2010 Recommended | Price: $200.00 | Rating: 10 

 
Pros: Sharp, compact, excellent boked and well built
Cons: None that I can think of

I got this lens off Ebay few months ago but only took it out for a "spin" few weeks ago. Looking at the pictures taken with this lens I regret for not using it earlier. This lens performs so well under any given condition. The IQ and sharpness are simply fabulous. The boked at f2.8 is also very smooth.

The macro mode while only at 1:2, it still gives a decent close up.

It worth every penny! The fact it's a A series, it performs very well on Pentax DSLR. I use it on my K10D under AV mode and images come out perfect 99% of the time.

Try to grab one if you see it!

See my sample shots here
   
Site Supporter

Registered: January, 2009
Location: Champagne Ardennes, France
Posts: 20

3 users found this helpful
Review Date: January 24, 2009 Recommended | Price: $135.00 | Rating: 10 

 
Pros: Optical and mechanical qualities, both macro & standard abilities, look when mounted on K100D
Cons: no

I found this lens on Ebay after missing a M50/f4 macro. It was more expensive but I never regretted to buy it..
The lens is very well built (metal) and seems made to be used for a lifetime.
Quality of pictures in standard use is close to other pentax A or M 50, and macro use is a pleasure (smooth and fine focus ring), with a nice bokeh.

Ideal for insects, flowers etc..as well for lanscape or children pictures..

I think it could be very hard to find an other lens doing this job for this price.

   
Veteran Member

Registered: December, 2007
Posts: 8,237

2 users found this helpful
Review Date: January 12, 2009 Recommended | Rating: 10 

 
Pros: One of the sharpest Pentax primes, color, contrast
Cons: none

A superb prime, scintillating colors and contrast. And it's one of the sharpest lenses I've used.

I've owned the FA version of this also, and it's essentially the same lens - in fact, this one may be sharper.

It has the perfect throw - I can manually focus this as easily as any Tak, and can even nail moving objects with ease.

It's realtively light, so it's absolutely perfect for casual macro and close-focus - no handshake like you get with 90mm+ macros.

Highly recommended.






.


The story of how I came about this lens can be found --> Here.




.
   
Site Supporter

Registered: November, 2007
Location: Saskatoon, Canada
Posts: 299

1 user found this helpful
Review Date: March 31, 2008 Recommended | Rating: 9 

 
Pros: Construction, sharp images
Cons: not 1:1

Bought it new over 25 years ago and never regretted the purchase. Use it exclusively for macro work. Extremely sharp. Great construction and a joy to focus. Some times would have liked a 100mm macro but the majority of the time, this lens did it all for me. Some of my best shots were taken with this lens. Highly recommended.
   
Veteran Member

Registered: March, 2007
Location: in a house in Armidale, Australia
Posts: 472

1 user found this helpful
Review Date: April 19, 2007 Recommended | Rating: 10 

 
Pros: small, sharp
Cons: only 1:2

the only lens I regret selling. It only goes to 1:2 and I wanted 1:1 but simply its small and sharp and I look back at the images I took with it, and they have a nice look (if the person who bought sees this, I want it back! .
   
Administrator

Registered: September, 2006
Location: Copenhagen, Denmark
Posts: 4,409

3 users found this helpful
Review Date: January 7, 2007 Recommended | Price: $375.00 | Rating: 9 

 
Pros: Build quality, a real pleasure to use.
Cons: Max. magnification 1:2

This macro lens is small and compact and a pleasure to use with its smooth focusing and all-metal lens barrel construction. It focuses down to 24 cm and provides 0.5 magnification on a film camera. It must be used with an extension tube to get to life size (1:1) magnification. It is very easy to fine tune focus. The lens can also be used as a normal lens, but focusing is a bit more difficult on faraway objects than on a standard 50mm lens, which has a one or one and a half stop advantage over the macro.

Optically and mechanically I can't find any flaws at all. This lens is SHARP:

http://www.pbase.com/ooest/image/37872621

For macro photography I do prefer a longer focal length, though, at least 100mm which allows for more distance to the subject.

Max. aperture: 2.8
Min. aperture: 22
No. of aperture blades: 6
Closest focusing distance: 24 cm
Max. magnification: 0.5
Filter size: 49mm
Weight: 220g
Add Review of SMC Pentax-A 50mm F2.8 Macro



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