The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samsung 45mm F1.8 and the Canon 50mm f1.8 II 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. Samsung 45mm F1.8 is the longer of the two lenses at 45mm. The Canon 50mm f1.8 II with a length of 41mm, is 4mm shorter. On the other hand, the Canon 50mm f1.8 II has a larger diameter of 68mm compared to the Samsung 45mm F1.8's 62mm 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. Samsung 45mm F1.8 weighs 115g, which means it is 15g (11%) lighter than the Canon 50mm f1.8 II which has a weight of 130g.
Filter Threads
The Samsung 45mm F1.8 has a filter size of 43mm whereas the Canon 50mm f1.8 II 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 43mm filters that we recommend you to consider for the Samsung 45mm F1.8:
And these are the 52mm filters that we recommend for the Canon 50mm f1.8 II:
Lens Mounts
The Samsung 45mm F1.8 has the Samsung NX lens mount whereas the Canon 50mm f1.8 II has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Samsung NX1, Samsung NX3000 and Samsung NX30 for the Samsung NX Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Focal Range
Samsung 45mm F1.8 is a prime lens with fixed focal lenght of 45mm which has an effective (full-frame 35mm equivalent) focal range of
67.5mm when used on a APS-C / DX format camera.
On the other hand, the Canon 50mm f1.8 II is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.