The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM ED 20mm F1.4 Pro and the Tokina atx-m 23mm F1.4 E 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. Tokina atx-m 23mm F1.4 E is the longer of the two lenses at 72mm. The OM ED 20mm F1.4 Pro with a length of 62mm, is 10mm shorter. Besides being longer, the Tokina atx-m 23mm F1.4 E also has a larger diameter of 65mm compared to the OM ED 20mm F1.4 Pro's 63mm 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. OM ED 20mm F1.4 Pro weighs 247g, which means it is 29g (10%) lighter than the Tokina atx-m 23mm F1.4 E which has a weight of 276g.
Filter Threads
The OM ED 20mm F1.4 Pro has a filter size of 58mm whereas the Tokina atx-m 23mm F1.4 E 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 58mm filters that we recommend you to consider for the OM ED 20mm F1.4 Pro:
And these are the 52mm filters that we recommend for the Tokina atx-m 23mm F1.4 E:
Lens Mounts
The OM ED 20mm F1.4 Pro has the Micro Four Thirds lens mount whereas the Tokina atx-m 23mm F1.4 E has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Focal Range
OM ED 20mm F1.4 Pro is a prime lens with fixed focal lenght of 20mm which has an effective (full-frame 35mm equivalent) focal range of
40mm when used on a FourThirds format camera.
On the other hand, the Tokina atx-m 23mm F1.4 E is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of 34.5mm when used on a APS-C / DX format camera.
