| Author: | | New Member Registered: December, 2018 Location: Telemark Posts: 24 | | Lens Review Date: April 7, 2019 | I can recommend this lens: Yes |
Price: $372.00
| Rating: 9 |
| Pros: | Unbelievable lens | | Cons: | None | | Sharpness: 9
Aberrations: 8
Bokeh: 9
Autofocus: 8
Handling: 9
Value: 9
New or Used: Used
Camera Used: Pentax K1
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One of the best lenses I've used on any camera system.
It's so unique.
Not only the focal length and aperture capabilites, but the build quality, the sharpness, the 3d effect, the bokeh. I just love this lens.
My only downside, which isn't really fair to blame the lens is that I don't use this focal lenght enough. Still, I have 2743 shots with this lens, and it's more of a pro grade lens than the last lens I reviewed here, the 28-105. Kind of surprised that they both have around the same rating at this forum
| | | | | | | Site Supporter Registered: October, 2008 Location: Bedfordshire, UK Posts: 131
1 user found this helpful
| | Lens Review Date: December 1, 2018 | I can recommend this lens: Yes |
Price: N/A
| Rating: 10 |
| Pros: | Ideal focal lenght, personality | | Cons: | none for me | | New or Used: Used
Camera Used: LX, K-1
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I do not praise this lens for its sharpness or lab test results, as I do not share the obsession for these characteristics. From a user point of view this lens is where I should have started my search for my personal taste of lenses.
During the yeas I went through different lenses, mostly 50mm and 35mm ones, shooting them extensively, but none of them really satisfied me.
Then a few years ago I bought this lens with my K-7. Then the K-7 went and this lens stayed. And I found the focal lenght I prefer. Since then I have one 40ish mm lens in every system (SLR, rangefinder and equvivalent medium format) I own.
But this lens by far is my favourite. It is always paired with my LX and taken mostly to trips. Nothing else. And it works brilliantly. Wide enough, yet one can separate subject. Bright enough if you need light, and light enough not to make you tired and sick of carrying your gear. Also makes my K-1 a charming and powerful asset.
All in all, give it a try, and forget about testing it. It is good without needing to prove it again and again.
| | | | | Pentaxian Registered: December, 2013 Posts: 486
1 user found this helpful
| | Lens Review Date: June 14, 2018 | I can recommend this lens: Yes |
Price: $500.00
| Rating: 9 |
| Pros: | Small, light, fast, sharp | | Cons: | Easy to loose lens cap, screw mount hoos, no quick shift | | Sharpness: 10
Aberrations: 9
Bokeh: 9
Autofocus: 8
Handling: 8
Value: 9
New or Used: Used
Camera Used: KP, K-30, PZ-1p
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The lens is very compact and well built. Comfortable to use. I use it wide open regurarly and I see it sharp. (On APS-C)
I like the renderation and bokeh of it, but to be honest the DA*55 is even better. Altough the 43mm focal length is much better then the 55mm indoors. Compared to the other FA limiteds it has a similar character, but I use more the other too. When I got it I was totally blown by the image quality so I got the FA77 and then the FA31 too. Now in my library I have 344 shot with the FA31 336 with the FA77 and only 177 with the FA43 from the date I have them all.
For studio portraits or indoor events I really like this lens. On my (full frame) PZ-1p it bacomes a true normal lens, and according to it this is my most used one.
Only the lens cap which I don't like, it falls down some times. Oh, yes and the hood goes to the filter screw mount, so occupies it.
Here are some shots taken with it:
 IMG171015_0045 by Benjámin Czétényi, on Flickr
 IMG171015_0036 by Benjámin Czétényi, on Flickr
 IMG171015_0067 by Benjámin Czétényi, on Flickr
 IMG171009_0003 by Benjámin Czétényi, on Flickr
 IMG171105_0004 by Benjámin Czétényi, on Flickr
 IMG171231_0003 by Benjámin Czétényi, on Flickr
 IMG180505_0059 by Benjámin Czétényi, on Flickr
| | | | | New Member Registered: May, 2017 Location: Kiev Posts: 8
1 user found this helpful
| | Lens Review Date: May 26, 2017 | I can recommend this lens: Yes |
Price: $450.00
| Rating: 10 |
| Pros: | Iron and strong. Very beautiful! High-speed. Makes beautiful photos. Sharp, starting at a diaphragm of 2.0. The lens has a small size and it is convenient to take it with you for a walk or a trip. | | Cons: | Lenses of silver color are made in Japan and have better quality of photos than black lenses. The cost of the new lens, in my opinion, is quite high. It could be cheaper. | | Sharpness: 10
Aberrations: 9
Bokeh: 10
Autofocus: 10
Handling: 10
Value: 7
New or Used: Used
Camera Used: K-5
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I can not say anything bad about this lens. He is perfect! Unless, the price for it is not the lowest.
The lens removes very sharp and contrast photos on the diaphragm 4,0. At a diaphragm of 2.0 or more, the sharpness is no longer around the entire frame, but only in the middle of the photo. But anyway, it turns out to make interesting pictures. Beautiful bokeh. Plastic and contrast image.
ISO 100
* F 2.0
* 1 / 320sec.
Postscript: I advise this lens to be acquired by anyone who wants to have a beautiful, small-sized, easy-to-use lens on their camera. Which takes pictures of beautiful photos. In the comments I indicated "yes" (I advise you to purchase). But when I save the message, it says "no." It is not true! I recommend everyone to have this excellent photo lens!
 | | | | | | | Junior Member Registered: January, 2013 Location: Texas Posts: 32 | | Lens Review Date: April 28, 2017 | I can recommend this lens: Yes |
Price: $600.00
| Rating: 10 |
| Pros: | Built quality, I.Q., light weight | | Cons: | No quickshift | | Sharpness: 9
Aberrations: 10
Bokeh: 10
Autofocus: 10
Handling: 9
Value: 9
New or Used: New
Camera Used: Pentax K10, K30, K70
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Very light, small and gorgeously built.
Image Quality is outstanding. Not so much the sharpness, similar to many 50mm lenses, but color rendition, resistance to flare, '3D' effect.
Quickshift is missing.
I love it.
| | | | | Junior Member Registered: October, 2010 Location: Dundas, Ontario Posts: 26 | | Lens Review Date: April 2, 2017 | I can recommend this lens: Yes |
Price: N/A
| Rating: 10 |
| Pros: | Amazing light transmission | | Cons: | Maybe some PF in rare cases, really can't see much | | Sharpness: 10
Aberrations: 8
Bokeh: 10
Autofocus: 10
Handling: 10
Value: 8
New or Used: Used
Camera Used: Pentax
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Excellent lens. Beautiful rendering, contrast is amazing. Need to have this lens fully open and gather all the nice light around you, don't stop it down  I have the MIJ version, not sure it matters but it's extremely well put together with high quality materials. Here are some samples
https://www.flickr.com/gp/pentax-takumar/249720
This lens is a full 10/10 for sure!
| | | | | Senior Member Registered: April, 2015 Location: Lower Saxony Posts: 121
1 user found this helpful
| | Lens Review Date: March 31, 2017 | I can recommend this lens: Yes |
Price: N/A
| Rating: 8 |
| Pros: | sice, 3D pop, colours, contrast, sharpness | | Cons: | back light sensitive | | Sharpness: 9
Aberrations: 7
Bokeh: 8
Autofocus: 8
Handling: 8
Value: 8
New or Used: Used
Camera Used: K-1
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There is an ant queen attacking Dobi Koma aka amok from the left...K-1, @f/1.9...
...linked to original out of camera jpg
 | | | | | Forum Member Registered: June, 2016 Location: Paris Posts: 80 | | Lens Review Date: October 25, 2016 | I can recommend this lens: Yes |
Price: $630.00
| Rating: 10 |
| Pros: | everything | | Cons: | way too light ? :) | | Sharpness: 10
Aberrations: 10
Bokeh: 10
Autofocus: 10
Handling: 10
Value: 10
New or Used: New
Camera Used: K-1 , M8
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Ok so this tiny lens is a huge performer.
bought two. 1st was black, sold back when bought a silver one with a low serial as i wanted better optical performance.
almost always manual focus it. it's a great focal and a perfectly sized lens for manual focus.
only tried AF on K-1. works perfectly when center AF.
IQ is stellar starting 1.9
if you plan on buying it and hesitate because of the good priced fa 50 1.4/1.7 , but you have the $ for it, don't hesitate anymore.
focal length from 50mm to 43mm is a big difference.
highly recommended lens
| | | | | Forum Member Registered: September, 2013 Posts: 62 | | Lens Review Date: July 25, 2016 | I can recommend this lens: Yes |
Price: $500.00
| Rating: 10 |
| Pros: | fast enough, compact, solid, sharp from 1.9, bokeh is smooth | | Cons: | no Q-shift (obvious), | | Sharpness: 10
Aberrations: 10
Bokeh: 10
Autofocus: 9
Handling: 9
Value: 9
New or Used: New
Camera Used: K-3, K-30
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PROS:
1- after AF adjustment it is sharp wide open (f/1.9-2) and very sharp from f/2.8. at f/1.9 it is sharper than my DA 40/2.8 stopped down to f/4.
2- fast enough, I can use it wide open at f/1.9 instead at the past I was needed to stop-down my DA 40 to the f/3.2-f/4 to get SO sharp image. Almost 2 full stops faster (in terms of IQ, not the exposition)
3- very nice and smooth bokeh. previous bokeh from DA 40/2.8 was not always good enough.
4- front cover attached on the very compact hood.
CONS:
1- no Q-shift (it is known, but this option is very useful at DA lens), it is not really issue.
2- not to fast AF, but fast enough. Yes, it is slower than DA 40, but only in comparison.
this lens will replace my DA 40/2.8 and DA 50/1.8.
1 lens instead of 2.
| | | | | Site Supporter Registered: December, 2013 Location: Houston, TX Posts: 1,717
3 users found this helpful
| | Lens Review Date: June 26, 2016 | I can recommend this lens: No |
Price: N/A
| Rating: 4 |
| Pros: | Compact, aesthetics, really nice at f/8 - f/11 | | Cons: | K-1 image quality, erratic focus | | Sharpness: 5
Aberrations: 6
Bokeh: 8
Autofocus: 1
Handling: 10
Value: 3
New or Used: Used
Camera Used: K-1
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Let me begin by saying that I *really* wanted to like this lens. I was excited to acquire it and use it on my K-1, having had such a great experience with my FA31 on the K-5IIs.
Wow, have I ever been disappointed. Let's go through the categories.
Sharpness:
I gave this a 5 because when it focuses, it's pretty good, especially at screen size. But a pixel peep reveals that the lens lacks the resolution of its FA31 and FA77 sisters. Perhaps the biggest problem with this lens is its poor contrast, even stopped down until you hit f/5.6 or so. Using flash helps a bit but compared to what other lenses can do on the K-1, the FA43 is a huge disappointment.
I'm not even commenting on wide open performance. I'm trying to shoot this at f/3.2 to f/4 and not seeing acceptable results. Flash helps a bit but the off-center performance is quite poor even stopped down a bit. A normal lens like this should really be accomplishing a lot more.
If you're a few feet away, then this lens does pretty well, but it's not capable of resolving fine details from afar. But given the short-ish focal length, perspective distortion begins to become a concern at short distances, so you have to choose between reality and acceptable resolution/sharpness.
Aberrations:
Purple fringing is more controlled with this lens than its FA sisters, at least from what I can tell. However, the lens displays a significant amount of field curvature, perhaps due to its focal length. The electronic levels in the K-1 show that I should be in-plane with flat objects yet there's still noticeable distortion. And if you're off by a slight amount, it's pretty rough.
Bokeh:
Bokeh is for the most part acceptable and pleasing, although the low number of straight aperture blades leads to hexagonal highlights. The trouble here is that the focal length requires you to focus closely to achieve the bokeh (where in distortion becomes a concern) and if you're moderately far away, you don't get strong blur unless you're at wide apertures and then...
Autofocus:
As bad as the Sigma 18-35 I had. Let me say that: every bit as poor, perhaps worse. At screen size, the images are ok, but even at 50% view, it's clear the focus is frequently lost. The Sigma generally worked well in Live View, but the FA43's performance in Live View is abysmal. In fact, it seems to miss almost all the time in live view. I attribute this to the lens's poor contrast below f/2.8, where it's not really all that usable. PDAF performance is...erratic but generally better. But I'm using this for wide-perspective portraits of people, when I want some environment in the photo and/or the FA77 is too long. For this purpose, it's utterly deplorable. I don't feel I can depend on this lens to focus below f/8.
It's possible I'm not focusing in a manner this lens needs. I use off-center focus points because I'm trying to nail focus on the eyes. It's possible that the lens is capable of reliable focus beyond its center points, simply because of poor resolution, poor contrast, or perhaps (mostly likely) field curvature and off-axis aberration. In any case, this doesn't help me much. My subjects have better things to do than wait around while I precisely focus and then do a perfect recompose because that's what the lens requires.
What I observe is that it tends to front focus from a distance but work well at short distances; if there were a consistent front focus, it would be obvious at the shallow DoF of close focus and I could calibrate it out. And then every now and then it will just miss entirely and on occasion back focus. Most troubling, however, is the failure in live view. Since Live View is an exhaustive search for maximum contrast, the lens properties really don't play much of a role. It indicates something is really crossed between the lens and the body. I'm not sure what. As I say in my review, I'm not sure whether it's the lens' poor contrast wide open (where focusing is done) or just the mediocre off-center sharpness or other distortion effects that make focus poor when non-center points are used. Still, if the latter, I would expect to see that spot in focus and the rest of the image messed up, but that's not what I see. Frequently, the subject's face is not in focus, despite my putting the focus point right over her eyes!
Handling:
Well, it's small and very light. That's a plus, right?
Value:
For significantly less money, you can have the less stylish F50, FA50, or DFA50, the first two of which can be had in f/1.4 or f/1.7 variants. The only appeal of this lens is its look. It gorgeous, simply put, but it's not worth what they're charging for it.
I guess I can say something good about the lens here: it looks really nice at f/8 to f/11. For shooting "stuff," it's ok in that regard and fills a gap between the FA31 and FA77 nicely. But any human subject you want in focus? Forget it.
| | | | | Veteran Member Registered: December, 2007 Location: Prague Posts: 1,199
2 users found this helpful
| | Lens Review Date: May 28, 2016 | I can recommend this lens: No |
Price: N/A
| Rating: 7 |
| Pros: | compact size, the build quality | | Cons: | not really sharp until stopped down | | Sharpness: 7
Aberrations: 7
Bokeh: 6
Autofocus: 6
Handling: 8
Value: 4
New or Used: New
Camera Used: K-1
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I really liked this lens on the K10D and the film cameras. It was not so good on the K-5, but I was eager to try it on full frame, expecting the lens to improve the impression. It did not.
It is still small and beautifully crafted, but the sharpness is lacking. Especially in comparison to the excellent DFA50/2,8 macro the difference is striking. With the DFA wide open you can count the distinct hairs on the subject, while the FA43 stopped down to same aperture won't render even larger features sharp enough.
The K-1 left me not wanting to use the FA43 anymore. I will always go with either FA35 or DFA50, both being superior in my opinion.
| | | | | Site Supporter Registered: November, 2010 Location: California Posts: 2,223
1 user found this helpful
| | Lens Review Date: September 20, 2014 | I can recommend this lens: Yes |
Price: $596.00
| Rating: 10 |
| Pros: | Sharp wide open, small, beautiful, color, IQ | | Cons: | None so far | | New or Used: New
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My copy was purchased at B&H, it is silver assembled in Vietnam, with one year warranty. It is beautiful and looks great on my black K3. I was hesitating to buy this lens because I have the DA40/2.8 that is a superb lens, and a pancake. However, I got into this one. Now, I do not want to get rid of the other one. They are both so good.
Here are sample taken with this lens:
 Pedro101-1 by Palenquero, on Flickr
 Restaurante1-1 by Palenquero, on Flickr
 PentaxFA-43-1.9 - Solar Power 3-1 by Palenquero, on Flickr
| | | | | Pentaxian Registered: January, 2011 Location: Skĺne, Sweden Posts: 453
6 users found this helpful
| | Lens Review Date: September 13, 2014 | I can recommend this lens: Yes |
Price: $700.00
| Rating: 9 |
| Pros: | Build quality, small size, rendering, haptics | | Cons: | Soft corners | | Sharpness: 9
Aberrations: 8
Bokeh: 8
Autofocus: 8
Handling: 9
Value: 8
New or Used: Used
Camera Used: K-5, K-3, K-01
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This review is for a mint condition 'Made in Japan' FA43 bought second-hand in Sweden, serial nr in the 0026xxx-range. Initial review based on experiences with the K-5 mk1, now updated after 6 months use with the K-3.
PROS- Rendering (transitions)
- Very compact size (great handling on Pentax bodies)
- Build quality
- Autofocus speed
- Full-frame compatible, aperture ring
- Unique focal length (true normal on FF)
CONS- Soft corners at wide apertures (not a big deal for portraits)
- Bokeh 'halos' (shared with the DA40)
- Slight aberrations (longitudinal and lateral)
- Showing age in some areas (no quick-shift, aberrations)
- Autofocus inconsistency on some bodies
I USE IT FOR- Portraits (full body, half-body, headshots)
- Weddings (indoor, outdoor)
- General photography
The first Limited I got was the DA40, and soon I started buying them as mint second-hand samples came on the market. After a couple of years I got all the five DA Limiteds and I was pretty well covered (I don't shoot much longer telephoto). There was something mythical about the FA Limiteds though, so after a while I started to look for them as well. I got the FA43 and FA77 at about the same time, then finally the FA31. I always felt that the FA43 was the 'daddy' of the DA40
I have to admit that the focal length of around 40mm initially felt a bit weird, but I’ve been focusing more and more on portrait and I have come to like it more and more. I find between the FA43 and FA77 I have the optimal focal lengths for portrait. Both will work for full body to headshots, where the FA77 is on the long side for small spaces, the FA43 is around my limit for how short I will go for a general portrait.
The FA43 is a very small and fast focusing lens, and it is impressive with full frame coverage, autofocus and pretty fast aperture in such a small package. However it is a bit too long for a general purpose lens, and it is too short to be considered a real telephoto. My favourite lens is the FA77 and I usually pick up the FA43 when there are not enough room to use the FA77, like shooting portraits/people indoors. It will also make a great companion for a two-lens-package with say a DA15 or DA21 for travel.
Image quality is generally very good, but it has a few oddities. First of all, the rendering is very nice. It is also sharp in center at all apertures, but needs to be stopped down for the corners to be sharp, in fact much more so than pretty much all modern (and most vintage) lenses I've used. At f/2.8 and wider the corners are still very soft, almost appearing as they where OOF. For portraits this is not a very big deal though, on the contrary some might argue. Like the DA40 the FA43 does show some pretty weird halos when the OOF background contains bright spots of light (think "christmas light" bokeh shots). The center has a bright center and the outline is very distinct. Normally I like a lens with character, but sometimes this can be a bit distracting.
Autofocus is fast, slightly behind the DA Limiteds. I think that the focus throw of the FA Limiteds is a bit of trade off between short-throw autofocus performance and long throw manual focus. Since the mass of glass is very low the AF still is fast and nothing to worry about. Quick-shift would have been nice though, I miss it more than I thought I would.
On the K-5 mk1 I had problem nailing focus consistently. I had calibrated it properly, but it very often it front or back focused, being affected by backlight, color temperature etc. This has to do with the lens/body-combo, but I have read that many others have the same kind of problems. I used the DA40 more than the FA43 on the K-5 since I didn’t trust the AF. When I got the K-3 things changed however! The focusing system in the K-3 gets along very well with the FA43 and it is now very consistent performer and I feel confident using it at wide apertures, like it is supposed to be. On the K-01 with contrast detection AF it of course shows no problems with front- or back focusing. A proper aperture ring is always a good thing in my book. You can use it on old film and with adapters on newer bodies. It feels like a premium product with the metal build, tight tolerances and heavy weight (for its size). The green felt in the cap is a nice touch!
The FA43 did replace my F50/1.7 and when my focusing issues was resolved with the K-3 I haven’t resorted to the DA40 any more, so I’ll probably let it go soon. The 50/1.7 was soft at f/1.7, but from f/2 it is as sharp as the FA43. The premium build, small package and rendering of the FA43 is what makes it special in my opinion, with some of that pixie-dust and odd focal length in the mix. But the F50/1.7 didn't show that weird halo and it costs a quarter of the FA43... I hope that the FA43 lives on in an updated “D-FA 43” with quick-shift, modern coatings and optimized for digital bodies, and dare I wish for WR?.
Pentax K-3, SMC Pentax-FA 43mm F1.9 Limited. 1/500 sec at f/2.5, ISO 100
Pentax K-3, SMC Pentax-FA 43mm F1.9 Limited. 1/100 sec at f/2.2, ISO 1600
Pentax K-3, SMC Pentax-FA 43mm F1.9 Limited. 1/800 sec at f/2.2, ISO 100
Pentax K-5, SMC Pentax-FA 43mm F1.9 Limited. 1/100 sec at f/2.5, ISO 1600, Flash
My pictures on flickr with this lens | | | | | New Member Registered: December, 2012 Location: Moscow Posts: 13 | | Lens Review Date: September 2, 2014 | I can recommend this lens: Yes |
Price: $449.00
| Rating: 10 |
| Pros: | IQ, contrast, sharpness like a razor, bokeh, size, price | | Cons: | Counter-light PF, 'complex nature' | | Sharpness: 10
Aberrations: 9
Bokeh: 10
Autofocus: 9
Handling: 10
Value: 9
New or Used: New
Camera Used: K-10, K-20, K-30
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Most unexpected ( for me) lens with complicated relationship. Sometimes you can make marvelous shots, sometimes it's just a bucket snap. 
Very plastic but sharp picture would become pencil-pictured, while downed just next aperture counter (from /1.9 to 2).
My other shots by this lens | | | | | Senior Member Registered: May, 2009 Location: Finland Posts: 210 | | Lens Review Date: July 14, 2014 | I can recommend this lens: Yes |
Price: $400.00
| Rating: 10 |
| Pros: | Size, speed, sharpness, build quality | | Cons: | No quick shift (just minor issue) | | Sharpness: 10
Aberrations: 9
Bokeh: 9
Autofocus: 10
Handling: 10
Value: 10
New or Used: Used
Camera Used: K-5 IIs
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Mine is a silver MIJ version. This lens is really a perfect combination of speed and size. I was a bit skeptical of the focal lenght before buying 43 ltd because I have never really liked 50mm lenses on APS-C camera. As a great surprice 43mm is just the right amount wider and I like it a lot. Image quality is also very high. Sharp, good colors and nice bokeh.
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