The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Schneider PC-TS 4.5/90 and the Tamron 90mm f2.8 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. Schneider PC-TS 4.5/90 is the longer of the two lenses at 139mm. The Tamron 90mm f2.8 Macro with a length of 97mm, is 42mm shorter. Besides being longer, the Schneider PC-TS 4.5/90 also has a larger diameter of 108mm compared to the Tamron 90mm f2.8 Macro's 72mm 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. Tamron 90mm f2.8 Macro weighs 405g, 63% (705g) lighter than the Schneider PC-TS 4.5/90's weight of 1110g.
Filter Threads
The Schneider PC-TS 4.5/90 has a filter size of 95mm whereas the Tamron 90mm f2.8 Macro has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 95mm filters that we recommend you to consider for the Schneider PC-TS 4.5/90:
And these are the 55mm filters that we recommend for the Tamron 90mm f2.8 Macro:
Lens Mounts
Both the Schneider PC-TS 4.5/90 and the Tamron 90mm f2.8 Macro has the same Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Schneider PC-TS 4.5/90 is also available in Canon EF , Nikon F (FX) and Sony Alpha mounts.
Tamron 90mm f2.8 Macro is also available in Canon EF , Nikon F (FX) and Sony Alpha mounts.
Focal Range
Both lenses have the same focal range of
90mm but while Schneider PC-TS 4.5/90 has the fastest aperture of
F4.5, the Tamron 90mm f2.8 Macro's widest aperture value is
F2.8.