Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) vs Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Tamron

SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)

Tamron

SP AF 70-200mm F/2.8 Di LD (IF) MACRO

Verdict at a glance

Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) goes wider (17mm vs 70mm).
Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO reaches further (200mm vs 50mm).

Specification comparison
Spec	SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)	SP AF 70-200mm F/2.8 Di LD (IF) MACRO
Brand	Tamron	Tamron
Mount	Pentax K	Pentax K
Type	Zoom	Telephoto Zoom
Focal length	17-50mm (wider)	70-200mm
Max aperture	f/2.8	f/2.8
Format	aps-c	n/a
Filter mm	67	77
Min focus m	0.27 (closer focusing)	0.95

Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)

A popular APS-C standard zoom with a constant f/2.8 aperture, much used on Pentax bodies with in-body stabilization. It has a 67mm filter thread and a minimum focus distance of 0.27 m.

Pros

Constant f/2.8
Compact 67mm filter size
Constant aperture with in-body stabilization support
Works with Pentax in-body stabilization

Cons

APS-C only
No weather sealing
Plastic build

Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO

An older f/2.8 telephoto zoom for Pentax K-mount cameras with a 77mm filter size. It has no stabilization of its own, but benefits from in-body shake reduction.

Pros

Constant f/2.8
Pentax in-body stabilization works with it
77mm filters
Macro mode

Cons

Heavier than modern f/4 zooms
Slower, noisier autofocus
Minimum focus 0.95 m

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