The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-70 F2.8 Di III-A VC and the Venus 33mm F0.95 CF APO 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 17-70 F2.8 Di III-A VC is the longer of the two lenses at 119mm. The Venus 33mm F0.95 CF APO with a length of 83mm, is 36mm shorter. Besides being longer, the Tamron 17-70 F2.8 Di III-A VC also has a larger diameter of 75mm compared to the Venus 33mm F0.95 CF APO'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 17-70 F2.8 Di III-A VC weighs 525g, which means it is 65g (11%) lighter than the Venus 33mm F0.95 CF APO which has a weight of 590g.
Filter Threads
The Tamron 17-70 F2.8 Di III-A VC has a filter size of 67mm whereas the Venus 33mm F0.95 CF APO has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 17-70 F2.8 Di III-A VC:
And these are the 62mm filters that we recommend for the Venus 33mm F0.95 CF APO:
Lens Mounts
Both the Tamron 17-70 F2.8 Di III-A VC and the Venus 33mm F0.95 CF APO has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Tamron 17-70 F2.8 Di III-A VC is also available in the Sony E mount.
Venus 33mm F0.95 CF APO is also available in Four Thirds and Nikon Z mounts.
Focal Range
Tamron 17-70 F2.8 Di III-A VC has a focal range of 17-70mm and
4.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
25.5-105mm when used on a APS-C / DX format camera.
On the other hand, the Venus 33mm F0.95 CF APO is a prime lens with fixed focal lenght of 33mm which has an effective (full-frame 35mm equivalent) focal range of 49.5mm when used on a APS-C / DX format camera.