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Pentax Lens Review Database » Film Era Pentax K-Mount Lenses » FA Prime Lenses
SMC Pentax-FA 50mm F1.7 Review RSS Feed

SMC Pentax-FA 50mm F1.7

Sharpness 
 9.7
Aberrations 
 9.2
Bokeh 
 9.2
Autofocus 
 9.2
Handling 
 9.3
Value 
 9.7
Reviews Views Date of last review
42 269,174 Fri December 1, 2023
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Recommended By Average Price Average User Rating
95% of reviewers $176.45 9.48
SMC Pentax-FA 50mm F1.7

SMC Pentax-FA 50mm F1.7
supersize
SMC Pentax-FA 50mm F1.7
supersize

Description:
This is a fast, compact standard lens.

SMC Pentax-FA 50mm F1.7
© 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, 5 groups
Mount Variant
KAF
Check camera compatibility
Max. Aperture
F1.7
Min. Aperture
F22
Focusing
AF (screwdrive)
Quick-shift
No
Min. Focus
45 cm
Max. Magnification
0.15x
Filter Size
49 mm
Internal Focus
No
Field of View (Diag. / Horiz.)

APS-C: 32 ° / 27 °
Full frame: 47 ° / 40 °
Hood
PH-SA49, PH-RA49, RH-RC49
Case
S70-70
Lens Cap
Lens Cap F 49mm
Coating
SMC
Weather Sealing
No
Other Features
Diam x Length
65 x 37 mm (2.5 x 1.5 in.)
Weight
170 g (6 oz.)
Production Years
1991 to 2004
Engraved Name
smc PENTAX-FA 1:1.7 50mm
Product Code
20907
Reviews
User reviews
Notes
Various hoods with 49mm thread will fit
Features:
Screwdrive AutofocusAperture RingAutomatic ApertureFull-Frame SupportDiscontinued
Sample Photos: View Sample Photos
Price History:



Add Review of SMC Pentax-FA 50mm F1.7
Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 31-42 of 42
Inactive Account

Registered: October, 2011
Posts: 1

1 user found this helpful
Review Date: October 2, 2012 Recommended | Price: $190.00 | Rating: 10 

 
Pros: Sharp, sharp, sharp, fast, color, contrast
Cons: none
Sharpness: 10    Aberrations: 9    Bokeh: 9    Autofocus: 9    Handling: 10    Value: 10    New or Used: Used    Camera Used: K-r   

I own this lens quite a while. Great for portrait shooting. Very nice color-rendering. Contrasty pictures and lightweight. Well built. And sharp open wide, razorsharp stopped down (F 2,0/2,2). I love it.
   
Inactive Account

Registered: April, 2011
Location: near Berlin
Posts: 9

1 user found this helpful
Review Date: January 24, 2012 Recommended | Price: $150.00 | Rating: 10 

 
Pros: IQ, size & weight, fast AF, bokeh wide open
Cons: a bit soft up to f/2.2, bokeh stopped down
Sharpness: 9    Aberrations: 8    Bokeh: 9    Autofocus: 10    Handling: 10    Value: 10    New or Used: Used   

In 80% of all cases I use this lens and I can rely on it. IQ is very fine maybe a bit warm but I like it. Wide open the bokeh is fine but the sharpness is not best. Stopped down a bit it is quiet sharp but the bokeh... It can be a bit nervous. CAs are well controlled but sometimes too visible. I won't miss this lens. As hood I use that one from the smc M 85/2. Fits great!

Paul
   
Senior Member

Registered: February, 2011
Posts: 118

1 user found this helpful
Review Date: November 7, 2011 Recommended | Price: $350.00 | Rating: 10 

 
Pros: sharpness, bokeh, compact size
Cons: manual focus
Sharpness: 10    Aberrations: 10    Bokeh: 10    Autofocus: 9    Handling: 9    Value: 10    New or Used: New   

I bought this lens new in box, many moons ago, for about $150, can't remember exactly how much.
Looking at ebay lately, I see that price has jumped like other Pentax lenses.

Much like M50/1.7, it is a sharp little lens. Sharper wide-open than 50/1.4, up to about f2 or f2.8. I would not use FA50/1.4 wide open but this lens is very usable at f1.7.

Love to bring this lens along when low light shot is required. The only drawback is, like most AF lenses, small focusing ring is a challenge to manually focus.

Same optical spec as F50/1.7, but interestingly this is one of odd lens where FA version is rarer than the F, as many have reported.
   
New Member

Registered: October, 2010
Location: bronx
Posts: 6

1 user found this helpful
Review Date: December 3, 2010 Recommended | Rating: 10 

 
Pros: Close focus, low light
Cons: None

I was into SLR in the 70's and sold my film camera in 2001. Manly used point and shoots. Was never happy with the results. I am a pixel peeper LOL.
But enjoyed the small size of the point and shoot zooms.

In those days film canisters had muliple uses..LOL

But I broke down and got the K-X on sale in New Jersey for $400.00.

Great camera. its nice using an slr again.

I started buying alot on the old Takumars on ebay but hated using the adapter. I then moved to the M w/ k mount but liked the automation of the A lenses.

But now I'm hooked on Autofocus. I leave the focus point set on center. Old school

So I have bought and sold about 40 lenses on ebay since August looking for the perfect fit. Taking comparason shots. My wife calls it the lens fiasco.
My dinning room looked like a camera store for awhile.

I bought this lens on ebay with a bunch of lenses. the seller was a pawn shop that did not no how to list the item correctly. Lucky me. But to be fair I have ended up with a lot of junk on ebay as well. But I can't list what I feel I paid for it. If I had to replace it I would pay $200.00.


I get really amazing shots indoors with my k-x at iso 1600 at F1.7

The sharpness wide open is amazing.. The auto focus hunts a little put locks in great. I always use a lens hood.

I have the 50mm a f1.4 which is collecting dust since I got this.

I am keeping..
Pentax A 50mm 1:1.4
Sigma 70-300mm 1:4-5.6 APO (HAS PROBLEMS) WORKS ONLY AT INFINITY
Pentax 50mm FA 1:1.7 auto focus
SMC Pentax-F 80-200mm F4.7-5.6 REALLY SHARP
SMC DA L 55-300mm f/4-5.8 ON ORDER FROM CANADA FOR $220.00

Great Forum...

Matt
   
Veteran Member

Registered: May, 2009
Location: Vancouver, B.C.
Posts: 6,513

1 user found this helpful
Review Date: November 29, 2009 Recommended | Rating: 10 

 
Pros: two of the sharpest "50mm"
Cons:

as mentioned, this one of the sharpest 50mm ever made. the FA50/2.8 macro is the sharper one and got the best bokeh rendering but the 1.7 has a 1 stop and a third advantage over the 2.8. that is a lot of light and OOF isolation factor.

also, at f2 sharpness and f2/8, it is equal to that of the FA35/2. except that the 50/1.7 has a brighter exposure than the 35.
   
Veteran Member

Registered: December, 2007
Posts: 8,237

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

 
Pros: Extremely sharp at all apertures, especially larger
Cons: none

Found this lens in a local store and almost didn't buy it, because I already have the FA 50 1.4. Boy, am I glad I did. It's sharper at the lower apertures than the FA 50 1.4 - 1.7 and 2.0 are sharper. After that, it evens out.

Because of it's incredible performance at the lower f-stops, this has become by go-to low light lens now, replacing the Fa 50 1.4. I mostly use the 1.4 for when I absolutely need 1.4, or want it's special bokeh.

Very highly recommended.
   
Junior Member

Registered: January, 2013
Location: Texas
Posts: 32
Review Date: April 28, 2017 Recommended | Rating: 9 

 
Pros: I.Q.
Cons: MF ring, No quickshift
Sharpness: 9    Aberrations: 10    Bokeh: 10    Autofocus: 10    Handling: 8    Value: 10    New or Used: New    Camera Used: Pentax K10D, K30   

Very nice lens. To reach perfection, it need a telescopic of bayonet hood, Quickshift and a larger / nicer manual focusing ring.
Compared to 50/1.4 A or FA, it is better at full aperture, identical from 2.8 up.
   
Senior Member

Registered: January, 2013
Location: Lincoln
Posts: 106
Review Date: October 17, 2013 Recommended | Price: $16.00 | Rating: 10 

 
Pros: Sharp, fast and accurate
Cons: None really but I could say plasticky
Sharpness: 10    Aberrations: 9    Bokeh: 8    Autofocus: 9    Handling: 9    Value: 10    New or Used: Used    Camera Used: K-30   

I picked one of these up for a tenner (£10) because it was a tenner. It was not until I checked ebay that I realised what a ridiculous bargain I had got. I haven't used this lens nearly enough as opportunities have been few this summer but when I have used it I have loved it. Sure and quick to find focus, sharp sharp and even more sharp, accurate colours and pretty good bokeh. Nice and fast. Feels a bit flimsy but I can live with that and I will have to get some sort of hood for it but if I could get bargains like this everyday...
   
Veteran Member

Registered: June, 2010
Posts: 753
Review Date: June 4, 2011 Recommended | Rating: 9 

 
Pros: compact, fast, sharp, fast af, price, bokeh
Cons: manual focusing, not so useful focal length on dslr
Sharpness: 9    Aberrations: 9    Bokeh: 8    Autofocus: 10    Handling: 9    Value: 10    New or Used: Used   

...as some reviewers above I have to agree that this lens is outstanding value. To my naked eye it is sharp as 43 limited. Objects in focus pop out. Slightly on colder side of overall colour cast. Fast autofocus. Bit less contrast than DA*50-135 and 43 limited.
All in all - good buy.
   
Junior Member

Registered: January, 2010
Location: Md
Posts: 33
Review Date: November 5, 2010 Recommended | Price: $50.00 | Rating: 10 

 
Pros: Small, light, fast AF, Tack Sharp, Low Price
Cons: None
Sharpness: 10    Aberrations: 10    Bokeh: 8    Autofocus: 10    Handling: 10    Value: 10    New or Used: Used   

This lens is a beast. I've had it for several months now and love it. I bought it at a local camera shop that deals mostly with Canon and Nikon. It was mounted to a cheap Pentax film camera - paid $80 for both. The body is worth about $30, which means I paid $50 for the lens! I couldn't believe it when I saw it.

It performs extremely well and nicely complements my DA 18-55 II and DA 55-300. I also own the M version of this lens and as another poster said the optics are about the same but you get auto-focus.
   
Inactive Account

Registered: August, 2009
Location: Lapu-Lapu City Cebu
Posts: 14
Review Date: May 25, 2010 Recommended | Rating: 9 

 
Pros: very good for portraiture
Cons: no lens hood

this is a must for portrait shots the details are very sharp/fine - i have tested it with my new k-x and it blends well with it - i have to experiment more with this lens @ slow shutter speed on a landscape to see how far this would go...

The only thing i don't know if this lens can be attached or have a lens hood with it?

Over- All - i rate it @ 8.75 because of it's quality and price
   
New Member

Registered: May, 2007
Location: Chicago
Posts: 24
Review Date: February 15, 2009 Recommended | Price: $90.00 | Rating: 9 

 
Pros: Sharpness and color rendition
Cons: Possibly a bit narrow field on digital

This is by far my favourite lens, on my ist DL it made a world of diffrence, I always used this for portraits, on my K20, I am so stunned by the IQ with the kit lens that it seems to narrow the gap between lenses. I have to say that I find mine to produce the highest quality images at the 2.8 f-stop setting, could just be me though. All of my pentax-using friends now own this lens as well.
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