The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron AF 18-200mm f3.5-6.3 XR II LD and the Canon 35-80mm f4.0-5.6 III for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Tamron AF 18-200mm f3.5-6.3 XR II LD is the longer of the two lenses at 84mm. The Canon 35-80mm f4.0-5.6 III with a length of 64mm, is 20mm shorter. Besides being longer, the Tamron AF 18-200mm f3.5-6.3 XR II LD also has a larger diameter of 74mm compared to the Canon 35-80mm f4.0-5.6 III's 65mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Canon 35-80mm f4.0-5.6 III weighs 175g, 56% (223g) lighter than the Tamron AF 18-200mm f3.5-6.3 XR II LD's weight of 398g.
Filter Threads
The Tamron AF 18-200mm f3.5-6.3 XR II LD has a filter size of 62mm whereas the Canon 35-80mm f4.0-5.6 III has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Tamron AF 18-200mm f3.5-6.3 XR II LD:
And these are the 52mm filters that we recommend for the Canon 35-80mm f4.0-5.6 III:
Lens Mounts
The Tamron AF 18-200mm f3.5-6.3 XR II LD has the Pentax KAF lens mount whereas the Canon 35-80mm f4.0-5.6 III has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron AF 18-200mm f3.5-6.3 XR II LD is also available in the Canon EF , Nikon F (DX) and Sony Alpha mounts.
Focal Range
Tamron AF 18-200mm f3.5-6.3 XR II LD has a focal range of 18-200mm and
11.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-300mm when used on a APS-C / DX format camera.
On the other hand, the Canon 35-80mm f4.0-5.6 III has a focal range of 35-80mm and 2.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 56 - 128mm.
