Compare Pentax-FA 77mm F1.8 vs Pentax DA 40mm F2.8
Construction
Aperture Blades
9 blades
9 blades, Rounded aperture diaphragm
Colors
Black, silver
Black, Silver
Form Factor
Short Telephoto Prime Lens
Short Telephoto Prime Lens
Image Size
Full-Frame
APS-C
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Material
Aluminum
Motor
Screw drive from camera
Screw drive from camera
Optical Formula | Elements
7 elements
5 elements
Optical Formula | Groups
6 groups
4 groups
Optical Formula | Special Glass
HD + Super Protect coatings groups
High-grade multi-layer HD (High Definition) Coating groups
Dimensions
Filter Diameter
49 mm / 1.93 in
49 mm / 1.93 in
Size | Diameter
64 mm / 2.52 in
63 mm / 2.48 in
Size | Length
48 mm / 1.89 in
15 mm / 0.59 in
Weight
270 g / 9.54 oz
80 g / 2.83 oz
Function
Angle Of View
31.4° Diagonal | 26.3° Horizontal | 17.7° Vertical
39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Crop Factor
1.5
Focal Length
77 mm
40 mm
Focal Length (35mm Equivalent)
60.0 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
Performance
Max Magnification
0.14x
0.13x
Min Focus Distance
700 mm / 27.56 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Lens Hood: MH-RE49 (supplied)
Debut
2021-02-24
2013-08-27
Reviews
Neofiliac score
68%
68%
Pros
- Rather compact
- Beautifully crafted
- Comes with physical aperture ring
- Good image quality
- Smooth rendering
- Exceptionally light and compact
- Great rendering
Cons
- Lacks weather sealing
- A bit expensive for a pancake lens
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