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

SMC Pentax-FA 50mm F2.8 Macro

Sharpness 
 9.9
Aberrations 
 9.3
Bokeh 
 9.3
Autofocus 
 8.0
Handling 
 8.9
Value 
 9.7
Reviews Views Date of last review
45 190,624 Wed May 31, 2023
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Recommended By Average Price Average User Rating
100% of reviewers $259.10 9.64
SMC Pentax-FA 50mm F2.8 Macro
supersize


Description:
This macro lens features 1:1 magnification. The optics are seated so far from the front that no separate lens hood is required.

SMC Pentax-FA 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, 8 blades
Optics
8 elements, 7 groups
Mount Variant
KAF
Check camera compatibility
Max. Aperture
F2.8
Min. Aperture
F32
Focusing
AF (screwdrive)
Quick-shift
No
Min. Focus
19 cm
Max. Magnification
1x
Filter Size
52 mm
Internal Focus
No
Field of View (Diag. / Horiz.)

APS-C: 32 ° / 27 °
Full frame: 47 ° / 40 °
Hood
RH-RA52
Case
S80-120
Lens Cap
Coating
SMC
Weather Sealing
No
Other Features
Focus Clamp
Diam x Length
68 x 70 mm (2.7 x 2.8 in.)
Weight
385 g (13.6 oz.)
Production Years
1990 to 2004
Engraved Name
smc PENTAX-FA 1:2.8 50mm MACRO
Product Code
28170
Reviews
User reviews
Features:
Screwdrive AutofocusAperture RingAutomatic ApertureFull-Frame SupportDiscontinued
Sample Photos: View Sample Photos
Price History:



Add Review of SMC Pentax-FA 50mm F2.8 Macro
Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Ascending) Showing Reviews 1-15 of 45
Administrator
Site Webmaster

Registered: September, 2006
Location: Arizona
Posts: 51,608

4 users found this helpful
Review Date: February 11, 2007 Recommended | Price: $350.00 | Rating: 10 

 
Pros: Extremely sharp, 1:1 magnification, metal barrel
Cons: Focusing clamp is flimsy

Many claim this lens to be the sharpest 50mm produced by Pentax, and I'd have to agree with that statement.

Whether you use this lens as a macro or telephoto, it produces fantastic images with beautiful colors and perfect sharpness. There's not much more to say...it's a fantastic lens. Its minumum focusing distance is 0.195m.

Sample Shots:
http://themotec.com/Ole/WEB_Gallery114/images/IMGP1733.jpg

http://themotec.com/Ole/WEB_Gallery114/images/IMGP1730.jpg

http://themotec.com/Ole/WEB_Gallery114/images/IMGP1758.jpg
   
Inactive Account

Registered: February, 2007
Location: Gloucester UK
Posts: 441

2 users found this helpful
Review Date: May 10, 2007 Recommended | Price: $280.00 | Rating: 10 

 
Pros: The sharpest lens, great IQ & zero distortion, Perfecto!
Cons: Very close to objects at 1:1

My favourite prime. Sharper and better overall IQ than a D-FA 50 f2.8 I've tested. Also excellent for portraits.

Very small objects at 1:1 macro means you are very close, a 100mm is better in this respect, but the 100 is not quite so sharp or distortion free. Ideally have both!

If I had to get rid of all my lenses, this would be the second to last to go, the last would be the DA 16-45 (as of May '07).

Bought s/h in 2004 for £155.
   
Pentaxian

Registered: April, 2007
Location: Toronto/Victoria
Posts: 460

1 user found this helpful
Review Date: August 3, 2007 Recommended | Price: $300.00 | Rating: 10 

 
Pros: Sharp, solid, life-size mag
Cons: Somewhat heavy, flimsy clamp switch

Technically probably the best lens I own. Not much more to say. Use it at F/2.8 or F/11 as desired. Use it at 1:1 or infinity as desired.

The clamp switch is quite unstable at the clamp setting, but OK when turned off.

It is also quite large compared to most normal lenses, but it better at all common apertures. It also focuses surprisingly quickly, even in low light perhaps due to the level of contrast wide open.
   
Senior Member

Registered: February, 2007
Location: Michigan/USA
Posts: 173

2 users found this helpful
Review Date: September 17, 2007 Recommended | Price: $300.00 | Rating: 10 

 
Pros: Sharp, precise, smooth bokeh, sturdy/built well.
Cons: No negs.

This is such an excellent macro lens. Extremely sharp. Focus ring is a little 'blah' to use, but otherwise nothing negative I can say about the FA 50/2.8.
   
Junior Member

Registered: January, 2008
Location: Florida gulf coast
Posts: 48

2 users found this helpful
Review Date: February 13, 2008 Recommended | Rating: 9 

 
Pros: Sturdy and sharp
Cons: Heavy

I have both this and the 50 1.4 FA. At f/2.8 the 1.4 is sharper than the macro, but that's to be expected since the macro is wide-open. At f/4.0 the macro passes the 1.4 very slightly, especially at the corners. Wide open the macro seems to have quite a bit of light fall-off, but it pretty well disappears by F/4.0.
   
Veteran Member

Registered: October, 2006
Location: Belgium
Posts: 476

2 users found this helpful
Review Date: February 18, 2008 Recommended | Price: $125.00 | Rating: 10 

 
Pros: Sharpest lens I've ever had and probably Pentax' best ever...
Cons: No manual override in AF
New or Used: New   

I bought this in a second hand store, two years ago, when Pentax was a unpopular brand. The lens was in mint condition. As the price was rediculous, I didn't hesitate one moment, and bought it in seconds flat. The lens sat back in a drawer untill on one occasion I went for a hike with some friends. That day, I think I only used this one and was impressed by both the quality and versatility of it.
Overnight it became my second most used lens ever (the DA 16-45 standing firm first ...)

First off, as a 50mm, this is not the most compact lens, nor is it a light weight, but it feels comfortable, and the extra weight makes it easy to shoot at lower shutter speed. The rubber grip of the focus ring is comfortable, if a little too short for manual focus, but once you get used of that, there's hardly any drawback in use...

I would have liked this lens to have a little better DOF indication, and while I'm at it, I would also have loved it to have a manual override in AF (but then again, that was introduced only years later with the first DA lens.)

If you think you cannot use this lens for insects, think again, it's only a matter of knowing how to approach an insect, and if you cannot approach an insect up to 20 cm (the closest focusing distance), will you be able to approach it up to 31 cm (closest distance of the 100 macro.) Anyway, I have made some nice insect photo's with this lens...

As for the optical performance: like I said, still have to encounter another lens which is as good (and I have had lots of them, including Zuiko's and Zeiss's and even two limiteds.)

So, for €89,- it was a bargain, but I would not hesitate one second to pay five times that price...

Here are some sample shots made with it:

Used with a bellows:
(Non working link removed)

Used in combination with the AF 1,7x adapter (excellent combination btw!)
(Non working link removed)

Used alone:
(Non working link removed)
   
New Member

Registered: February, 2008
Location: sydney,australia
Posts: 6

2 users found this helpful
Review Date: March 16, 2008 Recommended | Price: $400.00 | Rating: 9 

 
Pros: very sharp , beautifully smooth image of subject .
Cons: occasional AF hunting .

A wondrefully sharp lens at all distances . I use it also as a portrait lens on digitaland, seems to render skintones and faces superbly. Absolutely flat FOV when used for copying documents or artwork. Works beautifully on both film and digital
   
New Member

Registered: March, 2008
Location: England
Posts: 7

1 user found this helpful
Review Date: March 28, 2008 Recommended | Price: $200.00 | Rating: 9 

 
Pros: Sharpness, versattility, brilliant macro
Cons: a bit chunky and slow to focus

This lens and the FA50 F1.4 slug it out to sit on my DS. Very very sharp. I tried it on a K20 the other day and the resolution was amazing. Auto focus on DS is a bit slow but normally very accurate in macro mode, doesn't focus so well at distance on the DS. The only reason I didn't give it 10 was there might be something better some day but I wouldn't hold my breath.
   
New Member

Registered: April, 2008
Location: France-Switzerland
Posts: 13

2 users found this helpful
Review Date: May 21, 2008 Recommended | Price: $300.00 | Rating: 10 

 
Pros: Image quality, build
Cons: discontinued

I have always being fond on all 50mm lenses, and having collected quite a few over the years, I can assure you this one is the very best one, for my use (landscape and macro on digital and film bodies), and image quality wise as well.
Very sharp right from f2.8 on, the micro contrast still increases at f4 and overall image quality is supreme at f5.6.
So there is no hype here, it's reputation is fully deserved.

What I like:
-Build quality, the best among the Pentax 50mm autofocus lenses.
-Size, not small for a 50mm, but right this accounts for excellent handling IMO, and the recessed front element is so nicely protected from damage and stray light
-Autofocus is precise with my K10D and MZ-S as well, fast as well (if it doesn't get lost and starts to scan the entire focus range - this is a macro..)
-The focus clamp allows to have a nice manual focus feel, even if it still doesn't feel as good as an old (or new, thanks to Voigtlander and Zeiss) manual focus lens.
-Image quality at all range, simply superlative and very even.
-Flat field
-the combination of all these qualities makes a very versatile lens.

What I don't like:
-focus clamp doesn't always stay securely in off position, better to check from time to time in order to avoid needless stress on the autofocus motor...
-a focus limiter would have been nice.
-second hand price is very high, roughly equal to a new DFA 50mm macro... however it is worth it in my opinion.
   
Veteran Member

Registered: December, 2007
Posts: 8,237

1 user found this helpful
Review Date: June 7, 2008 Recommended | Rating: 9 

 
Pros: Sharp, nice color, 1-1 macro
Cons: none

The 2nd sharpest lens I've ever used, after the Viv 105 macro.

Absolutely terrific lens.
   
Junior Member

Registered: December, 2008
Posts: 26

2 users found this helpful
Review Date: May 13, 2009 Recommended | Price: $260.00 | Rating: 10 

 
Pros: Sharpness, contrast and bokeh
Cons: No focus limiter...

As a macro lens it's fantastic with superb sharpness and contrast. It easily outresolves my k200d in every f-stop...

It's also great as a normal lens, only missing the focus limiter to make it fantastic.

Highly recommended.

I'll add some macro shots later...

shot at f/2.8



Cutout 1:1 pixels (100%)

   
Senior Member

Registered: March, 2009
Posts: 121

2 users found this helpful
Review Date: August 9, 2009 Recommended | Price: $360.00 | Rating: 10 

 
Pros: Super sharp, excellent color rendition, wonderful bokeh
Cons: None

First of all, I also own the F50/1.4 but could never have decided whether I like it for portraits or not then I bought this Macro lens at a store for not such a bad price (since there are almost none of these on the second hand market) with a faulty focus clamp but that's not a thing I really need. Now, since I'm still planning on buying macro rails, I don't really use it for macro that much but once I tried just for the heck of it, pointing it at a friend (indoors, really low light, F 2.8) and the result amazed me.

I have since started to leave my F50/1.4 at home and bring this jewel along. Personally I find it sharper, with much better microcontrast, colors, bokeh and everything. I don't really miss the extra stop or two, this lens does everything I want from a 50 and more.
   
Pentaxian

Registered: March, 2008
Location: Quebec city, Canada
Posts: 9,362

5 users found this helpful
Review Date: August 11, 2009 Recommended | Price: $150.00 | Rating: 10 

 
Pros: SHARP! Beautiful bokeh, 1:1 magnification, great build quality, great colours
Cons: Flimsy focus clamp, no AF override
Sharpness: 10    Aberrations: 10    Bokeh: 10    Autofocus: 8    Handling: 9    Value: 10    New or Used: Used   

Loving it, loving it!

Build

This lens is all-metal, rugged, well balanced, and extremely nice to use. The focus ring is thin, but has something like a 270 degrees throw, making MF a breeze. The focus throw also scales with distance: a half turn moves the focus distance by a few meters at the "far" end, but by a few milimeters at the short end, making it perfect for fine-tuning macro focus.

The focus clamp threw me off a bit at first, I thought it was supposed to lock the focus. In fact its only role is to add friction for MF, nothing more. It's actually nice.

It would have been nice to have AF override like DA lenses but what do you want? The distance window is nice and the whitish background makes the numbers easy to read.

AF

AF is not fast. It's a macro lens with an enormous throw, that's to be expected. It's quite reliable, however. It usually just goes to the expected point, slowly but surely. It can hunt, but usually this happens when:

1-I get too close to a subject (it CAN happen)
2-I forget to use a tripod, get really close, and move a little while the lens tries to focus

If you do not do either, you'll never have AF problems. The motor is noisy, but not too much.

EDIT : I need to mention that, for non-macro work, the lens focuses extremely fast, nearly as fast as any F or FA I've used. Focus is accurate, too. The AF speed is proportionnal to the throw movement needed, which kinda makes sense. For instance, at portrait distance it's really fast, about as fast as my F 50 f1,7. And so sharp it hurts.

IQ

What's there to say? Sharpest Pentax ever? I have not tested them all, but I have no trouble believing it. Colours are gorgeous, even on cloudy days the colours seem to pop and come alive! Bokeh is so smooth, it's hard to believe it. It's just the best you can expect, all around.

The lens is usable at all apertures, and seems equally sharp. However close focusing at f2,8 will give you a paper-thin DOF, remember that!

I'm so glad I got this lens!
   
Site Supporter

Registered: February, 2009
Location: San Mateo, CA
Posts: 179
Review Date: October 27, 2009 Recommended | Price: $265.00 | Rating: 9 

 
Pros: Build quality, sharpness, color
Cons: Thin depth of field

Like a couple of other posters here, I really need my DA 16-45, while this macro is a worthy addition to my kit. Richness of color and in-focus sharpness are noticeably better than the 16-45, and I do appreciate the quality feel of this lens. But many, if not most, of my shots are of "busy" nature scenes where the entire scene is the subject. This lens works well for such shots only if they are vast landscapes which can be focused at infinity. But it works best where you want a sharp, clearly delineated subject and smooth bokeh. I still give it a 9 because it's excellent for its intended use, but it's not a versatile lens for me.
   
Veteran Member

Registered: March, 2009
Location: Salt Lake City, UT
Posts: 509
Review Date: August 26, 2010 Recommended | Price: $300.00 | Rating: 10 

 
Pros: amazing image quality, uniform performance at f2.8, well built, not bad for manual focusing
Cons: Big? Hood?
Sharpness: 10    Aberrations: 10    Bokeh: 10    Autofocus: 8    Handling: 9    Value: 9   

Amazing image quality when compared with other lenses. Great even at f2.8. What else can I say?! Corner to corner sharpness. Much better on the boarder when compared a standard 50mm lens using macro extender. No weak spots. Clamp is actually quite useful for manual focusing. Clamp on this is better than that on the DFA. Metal body, well built. Better feel in hand than DFA50. But DFA50 use 49mm filter, while this uses 52mm. More heavy than the DFA.

No hood. Slow focusing (all macro lenses are slow). Better than F in terms of little squeaky sound and having a focusing clamp.

Would be better to have a range control, a hood, SDM and water resistance treatment.
Add Review of SMC Pentax-FA 50mm F2.8 Macro



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