Skip to content
Menu

Pentax smc Pentax-K 24mm f/3.5 vs Tamron SP 24mm f/2.5 Adaptall-2

Both are Pentax K prime lenses for full frame. Here is what actually differs.

Pick the Pentax smc Pentax-K 24mm f/3.5 if

Our spec data shows no clear advantage for this lens.

Pick the Tamron SP 24mm f/2.5 Adaptall-2 if

  • You need 1 stop more light for low light or background blur (f/2.5 vs f/3.5)

Spec differences

8 differences
Specifications that differ between the Pentax smc Pentax-K 24mm f/3.5 and the Tamron SP 24mm f/2.5 Adaptall-2
Pentax smc Pentax-K 24mm f/3.5 Tamron SP 24mm f/2.5 Adaptall-2
Brand
Pentax
Tamron
Max aperture
f/3.5
f/2.5 1 stop faster
Weight
250 g
not listed
Length
46.5 mm
not listed
Diameter
63 mm
not listed
Filter thread
58 mm
55 mm
Optical design
9 elements / 8 groups
10 elements / 9 groups
Released
1975
not listed
7 identical specs hidden: mount, type, format, focal length, min focus distance, autofocus motor, image stabilization. Show all
Mount
Pentax K both
Type
Prime both
Format
Full frame both
Focal length
24mm both
Min focus distance
0.25 m both
Autofocus motor
Manual focus both
Image stabilization
No both

Our notes

Pentax smc Pentax-K 24mm f/3.5

This 24mm f/3.5 wide-angle prime lens from Pentax fits Pentax K mount cameras. The wide view suits landscapes, architecture and environmental shots.

Our notes

Tamron SP 24mm f/2.5 Adaptall-2

Tamron SP 24mm f/2.5 Adaptall-2: a wide-angle prime lens with a 24mm focal length and a maximum aperture of f/2.5, made for Pentax K mount cameras, from the Tamron SP series. The wide view suits landscapes, architecture and environmental shots.

More comparisons

Compare other lenses or browse our best-of guides.