Looking to find more information regarding these two camera lenses? Check out our side by side comparison of the Pentax smc D-FA 50mm F2.8 Macro vs Pentax smc DA 55mm F1.4 SDMto review specs, pros and cons, and which is right for you.
Pentax D-FA 50mm F2.8 Macro Top Features
- 50mm Focal Range
- F2.8 Max Aperture
- Filter Thread: 49mm
- Max Format: 35mm FF
- Pentax KAF Mount
- Weight: 265g.
- Diameter: 68mm
- Length: 60mm
- Min Focus Distance:0.2m
- Max Magnification:1x
Pentax DA 55mm F1.4 SDM Top Features
- 55mm Focal Range
- F1.4 Max Aperture
- Weather Sealed
- Filter Thread: 58mm
- Max Format:
- Pentax KAF3 Mount
- Weight: 375g.
- Diameter: 70mm
- Length: 66mm
- Min Focus Distance:0.45m
- Max Magnification:0.17x
Our Winner: Pentax smc D-FA 50mm F2.8 Macro over Pentax smc DA 55mm F1.4 SDM
Focal Length – Wide
50mm
vs
55mm
5mm Wider coverage
Aperture Ring
Yes
vs
No
able to adjust the aperture on the lens
Max Sensor Coverage
35mm FF
vs
APS-C / DX
covers larger sensors
Weight
265g
vs
375g
110g lighter
Diameter
68mm
vs
70mm
2mm smaller in diameter
Length
60mm
vs
66mm
6mm shorter
Filter Thread
49mm
vs
58mm
Smaller filters are cheaper and easier to find
Minimum Focus Distance
0.2m
vs
0.45m
can focus closer to the subject
Max Magnification
1x
vs
0.17x
higher magnification better for close-up shots
Focal Length – Tele
55mm
vs
50mm
5mm more Tele coverage
Max Aperture – Wide
1.4
vs
2.8
Wider aperture at wide end
Max Aperture – Tele
1.4
vs
2.8
Wider aperture at tele end
Diaphgragm Blades
9
vs
8
Potentially more rounded and smooth bokeh
Weather Sealing
Yes
vs
No
safer to use under rain and dust
Image Stabilization
No
vs
No
Reliant on in-body Image Stabilization
Pentax D-FA 50mm F2.8 Macro vs Pentax DA 55mm F1.4 SDM All Features
General
Pentax D-FA 50mm F2.8 Macro
Pentax DA 55mm F1.4 SDM
Brand
Pentax
Pentax
Lens Type
Prime
Prime
Price
CHECK PRICE
CHECK PRICE
Lens Type
Macro Prime
Standard Prime
Lens Mount
Pentax KAF
Pentax KAF3
Max Format
35mm FF
APS-C / DX
Focal Range
50mm
55mm
Image Stabilization
No
No
Colour
Black
Black
Zoom Method
No Zoom
No Zoom
Power Zoom
No
No
Zoom Lock
No
No
Zoom Ratio
1.0X
1.0X
Aperture
Max Aperture
F2.8
F1.4
Min Aperture
F32.0
F22.0
Aperture Ring
Yes
No
Diaphragm Blades
8
9
Optics
Optical Elements
8
9
Optical Groups
7
8
Special Elements
unknown
unknown
Focusing
Min Focus Distance
0.2m
0.45m
Max Magnification
1X
0.17X
Autofocus
Yes
Yes
AF Motor Type
Screw drive from camera
Ultrasonic
Full Time Manual
Yes
Yes
Focus Method
Unknown
Internal
Distance Scale
Unknown
Yes
DoF Scale
Yes
Yes
Distance Scale
Unknown
Yes
Focus Distance Limiter
Unknown
Unknown
Physical Specs
Weight
265g
375g
Diameter
68mm
70mm
Length
60mm
66mm
Materials
Unknown
Unknown
Weather Sealing
Unknown
Yes
Filter Thread
49mm
58mm
Filter Notes
–
Does not rotate on focus
Hood Supplied
Yes
Yes
Hood Code
Unknown
PH-RBH 58mm
Tripod Collar
No
No
Optional Accessories
–
–
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