Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sony FE 35mm F1.8 is the longer of the two lenses at 73mm. The Sony E 35mm F1.8 OSS with a length of 45mm is 28mm shorter. Besides being longer, the Sony FE 35mm F1.8 also has a larger diameter of 66mm compared to Sony E 35mm F1.8 OSS's 63mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony E 35mm F1.8 OSS weighs 155g, 44% (125g) lighter than the Sony FE 35mm F1.8's weight of 280g.
Below you can find the dimension and weight table of the 'Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Wideangle Prime Lenses in Sony E Mount for Size Comparison
Both Sony FE 35mm F1.8 and Sony E 35mm F1.8 OSS has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX30, Sony A7 IV and Sony ZV-E10.
Both lenses have the same focal range of 35mm and the fastest aperture of F1.8.