The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 25mm F2.8 2.5-5X Ultra Macro and the Tamron 60mm f2 II LD IF Macro 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 60mm f2 II LD IF Macro is the longer of the two lenses at 80mm. The Venus 25mm F2.8 2.5-5X Ultra Macro with a length of 65mm, is 15mm shorter. On the other hand, the Venus 25mm F2.8 2.5-5X Ultra Macro has a larger diameter of 82mm compared to the Tamron 60mm f2 II LD IF Macro's 73mm 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.
Below you can find the dimension and weight table of the Macro Prime Lenses in Canon EF Mount for size comparison purposes.
Macro Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both the Venus 25mm F2.8 2.5-5X Ultra Macro and the Tamron 60mm f2 II LD IF Macro has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Venus 25mm F2.8 2.5-5X Ultra Macro is also available in the Nikon F (DX) , Pentax KAF2 and Sony E mounts.
Tamron 60mm f2 II LD IF Macro is also available in Nikon F (DX) and Sony Alpha mounts.
Focal Range
Venus 25mm F2.8 2.5-5X Ultra Macro is a prime lens with fixed focal lenght of 25mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
40mm.
On the other hand, the Tamron 60mm f2 II LD IF Macro is a prime lens with fixed focal lenght of 60mm which has an effective (full-frame 35mm equivalent) focal range of 96mm when used on a APS-C / DX format camera.