The Tamron SP AF10-24mm f/3.5 -4.5 Di II is an ultra wide-angle zoom lens. Di II means that is designed for exclusive use on digital SLR cameras with smaller-size imagers (APS-C/DX). Boasting a focal length range of 10 – 24mm, (the 35mm equivalent of 16mm to 37mm) this lens has a varied range of applications for creating dramatic images as it features both ultra-wide and semi-wide angle settings.
The close focusing capability of this lens enables image capture with an exaggerated perspective at the 10mm ultra wide-angle end or with a maximum magnification ratio of 1:5 at the 24mm semi-wide-angle. It has Micro Motor to ensure precise and smooth auto focusing.
Captures Ideal Range of Focal Lengths With D-SLRs
Since the size of 35mm film format is larger than the image sensor generally used in D-SLRs, a digital camera captures a narrower angle of view than a 35mm film camera even at the same focal length settings. This lens, made exclusively for digital SLR cameras, provides ideal focal lengths to cover the range desired by DSLR shooters.
Fits Smaller-Size Imagers
This lens is designed so the size of the lens’ image circle matches that of smaller-size image sensors. In the compact design, it is almost comparable to a lens offering the same angles of view in 35mm film format.
Please Note: When pictures are taken with a Di-II lens mounted on a 35mm film camera, image corners become dark (i.e. vignetting becomes noticeable).
Aspherical Lens Elements
The optical system within this zoom lens uses three large-aperture glass-molded aspherical lenses, as well as three hybrid aspherical lenses, which minimize spherical aberrations, coma, and distortion.
Minimum Focusing Distance Across Zoom Range
The close focusing capability of this lens enables the capturing images with an exaggerated perspective at the 10mm ultra wide-angle end or shoot with a maximum magnification ratio of 1:5 at the 24mm semi-wide-angle setting with the freedom to create close-ups at the minimum focusing distance of 0.24m throughout the zoom range.
Conclusion – Pros
- Equal widest angle in its class, and largest zoom range (by a whisker)
- Low distortion
- Generally good resistance to flare
Conclusion – Cons
- Soft wide open (low local contrast)
- Soft corners at all focal lengths and apertures
- Wide diameter lens hood takes up lots of space in a bag
So overall, this is a wide angle zoom which will give good results when used with a little care (i.e. not shot wide open), and which has much to like about it in terms of operation and results. With the broad zoom range and reasonable price, it’s worthy of a place on the shortlist for anyone looking to buy an ultrawide DX zoom.
The Tamron 10-24mm is nice enough, except that it’s not very sharp unless stopped down. There are better lenses out there for the same price. Used wide-open in dim light, the results are soft enough to be noticeable in normal-sized (8×10″ or 20x25cm) prints.
I wouldn’t buy one of these, even for use on a Nikon D40, D40x or D60. On these cameras, I’d suggest finding a way to get the more expensive Nikon 10-24mm, since money spent on lenses is always an investment that pays well for many years.
Even on the D40, D40x and D60, for the same money I’d get the far superior Tokina 11-16mm and focus manually using these camera’s manual focus systems. This way, when I got a better camera in the future, the Tokina would autofocus, and I’d save myself having to sell this Tamron.
If you’re shooting Canon, the superior Canon 10-22mm is well worth the small extra cost.