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Pentax smc FA 50mm F1.4 KAF Mount Review

Pentax smc FA 50mm F1.4

Main Features

  • 50mm Focal Range
  • F1.4 Max Aperture
  • Filter Thread: 49mm
  • Max Format: 35mm FF
  • Pentax KAF Mount
  • Weight: 220g / 0.48 lb
  • Dimensions(øxL): 64mm x 38mm
  • Min Focus Distance: 0.45m
  • Max Magnification: 0.15x
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Pentax FA 50mm F1.4 Overview


Pentax FA 50mm F1.4 is a Fixed aperture Auto Focus (AF) Standard Prime lens with 35mm FF max sensor coverage, and it is designed to be used with KAF Mount cameras.

What type of photography is the Pentax FA 50mm F1.4 lens good for?

The type of photography that you are planning to use the Pentax FA 50mm F1.4 is an important decision factor. Here we have evaluated its suitability to various photography scenarios:

Photography Type Suitability
Bird/WildlifeFair
SportsAverage
PortraitExcellent
TravelGood
StreetVery Good
WeddingExcellent
Walk AroundGood
VloggingGood
LandscapeGood
MacroPoor

Lenses in Pentax KAF Mount with Same Focal and Aperture Range
Model Coverage Weight Focusing Street Price
HD Pentax-D FA 50mm F1.4 SDM AW Lens HD Pentax-D FA 50mm F1.4 SDM AW
Compare
35mm FF 910gr AF Amazon B&H Photo
smc Pentax-FA 50mm F1.4 Classic Lens smc Pentax-FA 50mm F1.4 Classic
Compare
35mm FF 216gr AF Amazon B&H Photo
HD Pentax-FA 50mm F1.4 Lens HD Pentax-FA 50mm F1.4
Compare
35mm FF 223gr AF Amazon B&H Photo
Samyang 50mm F1.4 AS UMC Lens Samyang 50mm F1.4 AS UMC
Compare
35mm FF 535gr MF Amazon B&H Photo
Carl Zeiss Planar T1.4 50 Lens Carl Zeiss Planar T1.4 50
Compare
35mm FF 350gr MF Amazon B&H Photo
Sigma 50mm F1.4 EX DG HSM Lens Sigma 50mm F1.4 EX DG HSM
Compare
35mm FF 505gr AF Amazon B&H Photo

Reasons to Buy Pentax smc FA 50mm F1.4 Lens

Here we've included a summary of the advantages and disadvantages of the Pentax smc FA 50mm F1.4 lens in a list form to help you determine whether it offers the features you need.

PROs
Autofocus
Aperture Ring
Distance Scale
DoF(Depth of Field) Scale
Very Fast Aperture
Covers Full-Frame Sensor
8 Diaphragm Blades for Smooth Bokeh
Report a correction

Buy Pentax FA 50mm F1.4 from Amazon or B&H PHOTO


CONs
Hood is not supplied


Lens Mount

Pentax FA 50mm F1.4 is compatible with cameras that have a Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.

Pentax FA 50mm F1.4 is also available in Pentax KAF mount.

Size, Weight and Filter Thread

Size and weight is a very important decision factor when searching for your next lens. Pentax FA 50mm F1.4 has a maximum diameter of 64mm and total length of 38mm. It weighs 220g / 7.8 oz.

Pentax FA 50mm F1.4 has a filter thread of 49mm. Below are links to the filters that we recommend you to consider for your Pentax FA 50mm F1.4:

  • 49mm Variable ND Lens Filters
  • 49mm Circular Polarizer Lens Filters
  • 49mm Clear Protection Lens Filters




Focal Range

Pentax FA 50mm F1.4 has a fixed focal length of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 75mm.


Optical Image Stabilization

Pentax FA 50mm F1.4 doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).

Maximum Magnification Ratio

Pentax FA 50mm F1.4 has a Max Magnification Ratio of 0.15x and has a minimum focusing distance of 0.45m. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.

Below are the 3 Standard Prime type Pentax KAF mount lens alternatives with highest max magnification ratios:

  • Pentax 35mm F2.4 AL: 0.17x - (Compare)
  • Pentax DA 55mm F1.4 SDM: 0.17x - (Compare)
  • HD Pentax-FA 35mm F2 AL: 0.17x - (Compare)

Aperture

Pentax FA 50mm F1.4 has a max aperture of F1.4 and a minimum aperture of F22.0.

Optical Formula

Pentax FA 50mm F1.4's optical formula consists of 7 elements in 6 groups .

Lens Hood

Pentax FA 50mm F1.4 doesn't come with a lens hood. You have to order the hood separately and the model number of the hood is PH-SA49.

Body Colour

Pentax FA 50mm F1.4 is available in Black color.

Popular Comparisons of Pentax FA 50mm F1.4

Here are the eight most popular comparisons of the Pentax FA 50mm F1.4 amongst Camera Decision readers.

Top Alternatives of Pentax FA 50mm F1.4 Lens
Model Coverage Weight Focusing Street Price
Pentax smc DA 50mm F1.8 Lens Pentax smc DA 50mm F1.8
Compare
35mm FF 122 g / 0.27 lb AF Amazon B&H Photo
Pentax smc DA 55mm F1.4 SDM Lens Pentax smc DA 55mm F1.4 SDM
Compare
APS-C / DX 375 g / 0.83 lb AF Amazon B&H Photo
Sigma 50mm F1.4 EX DG HSM Lens Sigma 50mm F1.4 EX DG HSM
Compare
35mm FF 505 g / 1.11 lb AF Amazon B&H Photo
Pentax smc FA 43mm F1.9 Limited Lens Pentax smc FA 43mm F1.9 Limited
Compare
35mm FF 155 g / 0.34 lb AF Amazon B&H Photo
HD Pentax-D FA 50mm F1.4 SDM AW Lens HD Pentax-D FA 50mm F1.4 SDM AW
Compare
35mm FF 910 g / 2.00 lb AF Amazon B&H Photo
HD Pentax-FA 43mm F1.9 Limited Lens HD Pentax-FA 43mm F1.9 Limited
Compare
35mm FF 155 g / 0.34 lb AF Amazon B&H Photo
Carl Zeiss Planar T1.4 50 Lens Carl Zeiss Planar T1.4 50
Compare
35mm FF 350 g / 0.77 lb MF Amazon B&H Photo
Voigtlander 58mm F1.4 Nokton SL II Lens Voigtlander 58mm F1.4 Nokton SL II
Compare
35mm FF 320 g / 0.70 lb MF Amazon B&H Photo


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate, I earn from qualifying purchases.

Pentax smc FA 50mm F1.4 Alternatives in Pentax KAF Mount
Model Coverage Weight Focusing Street Price
HD Pentax-D FA 50mm F1.4 SDM AW Lens HD Pentax-D FA 50mm F1.4 SDM AW
Compare
35mm FF 910 g / 2.00 lb AF Amazon B&H Photo
smc Pentax-FA 50mm F1.4 Classic Lens smc Pentax-FA 50mm F1.4 Classic
Compare
35mm FF 216 g / 0.48 lb AF Amazon B&H Photo
HD Pentax-FA 50mm F1.4 Lens HD Pentax-FA 50mm F1.4
Compare
35mm FF 223 g / 0.49 lb AF Amazon B&H Photo
HD Pentax-FA 43mm F1.9 Limited Lens HD Pentax-FA 43mm F1.9 Limited
Compare
35mm FF 155 g / 0.34 lb AF Amazon B&H Photo
Pentax smc D-FA 50mm F2.8 Macro Lens Pentax smc D-FA 50mm F2.8 Macro
Compare
35mm FF 265 g / 0.58 lb AF Amazon B&H Photo
HD Pentax DA 35mm F2.8 Macro Limited Lens HD Pentax DA 35mm F2.8 Macro Limited
Compare
APS-C / DX 214 g / 0.47 lb AF Amazon B&H Photo
HD Pentax DA 40mm F2.8 Limited Lens HD Pentax DA 40mm F2.8 Limited
Compare
APS-C / DX 80 g / 0.18 lb AF Amazon B&H Photo
HD Pentax DA 70mm F2.4 AL Limited Lens HD Pentax DA 70mm F2.4 AL Limited
Compare
APS-C / DX 147 g / 0.32 lb AF Amazon B&H Photo
Pentax smc DA 35mm F2.4 AL Lens Pentax smc DA 35mm F2.4 AL
Compare
APS-C / DX 124 g / 0.27 lb AF Amazon B&H Photo
Pentax smc DA 35mm F2.8 Macro Limited Lens Pentax smc DA 35mm F2.8 Macro Limited
Compare
APS-C / DX 215 g / 0.47 lb AF Amazon B&H Photo
Pentax smc DA 40mm F2.8 Limited Lens Pentax smc DA 40mm F2.8 Limited
Compare
APS-C / DX 90 g / 0.20 lb AF Amazon B&H Photo
Pentax smc DA 40mm F2.8 XS Lens Lens Pentax smc DA 40mm F2.8 XS Lens
Compare
APS-C / DX 45 g / 0.10 lb AF Amazon B&H Photo
Pentax smc DA 50mm F1.8 Lens Pentax smc DA 50mm F1.8
Compare
35mm FF 122 g / 0.27 lb AF Amazon B&H Photo
Pentax smc DA 70mm F2.4 AL Limited Lens Pentax smc DA 70mm F2.4 AL Limited
Compare
APS-C / DX 130 g / 0.29 lb AF Amazon B&H Photo
Pentax smc DA 55mm F1.4 SDM Lens Pentax smc DA 55mm F1.4 SDM
Compare
APS-C / DX 375 g / 0.83 lb AF Amazon B&H Photo
Pentax smc FA 43mm F1.9 Limited Lens Pentax smc FA 43mm F1.9 Limited
Compare
35mm FF 155 g / 0.34 lb AF Amazon B&H Photo
HD Pentax-FA 35mm F2 AL Lens HD Pentax-FA 35mm F2 AL
Compare
APS-C / DX 193 g / 0.42 lb AF Amazon B&H Photo
Samsung D-Xenon 35mm F2 AL Lens Samsung D-Xenon 35mm F2 AL
Compare
35mm FF 195 g / 0.43 lb AF Amazon B&H Photo
Samyang 50mm F1.4 AS UMC Lens Samyang 50mm F1.4 AS UMC
Compare
35mm FF 535 g / 1.18 lb MF Amazon B&H Photo
Sigma 50mm F2.8 EX DG Macro Lens Sigma 50mm F2.8 EX DG Macro
Compare
35mm FF 320 g / 0.70 lb AF Amazon B&H Photo
Sigma 70mm F2.8 EX DG Macro Lens Sigma 70mm F2.8 EX DG Macro
Compare
35mm FF 527 g / 1.16 lb AF Amazon B&H Photo
Samyang 35mm F1.4 AS UMC Lens Samyang 35mm F1.4 AS UMC
Compare
35mm FF 660 g / 1.45 lb MF Amazon B&H Photo
Voigtlander 40mm F2 Ultron SL II Lens Voigtlander 40mm F2 Ultron SL II
Compare
35mm FF 200 g / 0.44 lb MF Amazon B&H Photo
Voigtlander 58mm F1.4 Nokton SL II Lens Voigtlander 58mm F1.4 Nokton SL II
Compare
35mm FF 320 g / 0.70 lb MF Amazon B&H Photo
Schneider PC-TS Super-Angulon 2.850 HM Lens Schneider PC-TS Super-Angulon 2.850 HM
Compare
35mm FF 1400 g / 3.08 lb MF Amazon B&H Photo
Irix 45mm F1.4 Lens Irix 45mm F1.4
Compare
35mm FF 925 g / 2.04 lb MF Amazon B&H Photo
Lensbaby Burnside 35 Lens Lensbaby Burnside 35
Compare
35mm FF 374 g / 0.82 lb MF Amazon B&H Photo
Carl Zeiss Distagon T 235 Lens Carl Zeiss Distagon T 235
Compare
35mm FF 570 g / 1.25 lb MF Amazon B&H Photo
Carl Zeiss Makro-Planar T 250 Lens Carl Zeiss Makro-Planar T 250
Compare
35mm FF 530 g / 1.17 lb MF Amazon B&H Photo
Carl Zeiss Planar T1.4 50 Lens Carl Zeiss Planar T1.4 50
Compare
35mm FF 350 g / 0.77 lb MF Amazon B&H Photo
Lensbaby Velvet 56 Lens Lensbaby Velvet 56
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35mm FF 400 g / 0.88 lb MF Amazon B&H Photo
Hartblei Superrotator 40mm F4 IF TS Lens Hartblei Superrotator 40mm F4 IF TS
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35mm FF 1550 g / 3.41 lb MF Amazon B&H Photo
Lensbaby Sol 45 DSLR Lens Lensbaby Sol 45 DSLR
Compare
35mm FF 144 g / 0.32 lb MF Amazon B&H Photo
Rokinon 35mm f1.4 Lens Rokinon 35mm f1.4
Compare
35mm FF 660 g / 1.45 lb MF Amazon B&H Photo
Sigma 35mm F1.4 DG HSM Lens Sigma 35mm F1.4 DG HSM
Compare
35mm FF 665 g / 1.46 lb AF Amazon B&H Photo
Sigma 50mm F1.4 EX DG HSM Lens Sigma 50mm F1.4 EX DG HSM
Compare
35mm FF 505 g / 1.11 lb AF Amazon B&H Photo

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Pentax FA 50mm F1.4 Detailed Specifications


General
Brand Pentax
Lens Type Prime
Lens Type Standard Prime
Lens Mount Pentax KAF
Max Format 35mm FF
Focal Range 50mm
Image Stabilization No
Colour Black
Zoom Method No Zoom
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 1.0X
APERTURE
Max Aperture F1.4
Min Aperture F22.0
Aperture Ring Yes
Diaphragm Blades 8
Optics
Optical Elements 7
Optical Groups 6

FOCUSING
Min Focus Distance 0.45m
Max Magnification 0.15X
Autofocus Yes
AF Motor Type Screw drive from camera
Focus Method Unit
Distance Scale Yes
DoF Scale Yes
PHYSICAL SPECS
Weight 220g
Diameter 64mm
Length 38mm
Weather Sealing Unknown
Filter Thread 49mm
Filter Notes Does not rotate on focus
Hood Supplied No
Hood Code PH-SA49
Tripod Collar No
Report a Correction
Frequently Asked Questions about Pentax smc FA 50mm F1.4
is the Pentax smc FA 50mm F1.4 a Weather-sealed lens?
What is the Minimum Focusing Distance of Pentax smc FA 50mm F1.4
is the Pentax smc FA 50mm F1.4 an Autofocus (AF) lens?
What is the Filter Thread Size of Pentax smc FA 50mm F1.4
Does Pentax smc FA 50mm F1.4 have Image Stabilization?
Does Pentax smc FA 50mm F1.4 have Aperture Ring?
What is the Maximum Magnification Ratio of Pentax smc FA 50mm F1.4


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