The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 18-50mm F2.8 DC DN C and the Olympus ED 12-45mm F4 Pro 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. Sigma 18-50mm F2.8 DC DN C is the longer of the two lenses at 75mm. The Olympus ED 12-45mm F4 Pro with a length of 70mm, is 5mm shorter. Besides being longer, the Sigma 18-50mm F2.8 DC DN C also has a larger diameter of 65mm compared to the Olympus ED 12-45mm F4 Pro's 63mm diameter.
Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C and Olympus ED 12-45mm F4 Pro to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 18-50mm F2.8 DC DN C and the Olympus ED 12-45mm F4 Pro Size and Weight 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. Olympus ED 12-45mm F4 Pro weighs 254g, 12% (36g) lighter than the Sigma 18-50mm F2.8 DC DN C's weight of 290g.
Filter Threads
The Sigma 18-50mm F2.8 DC DN C has a filter size of 55mm whereas the Olympus ED 12-45mm F4 Pro has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 18-50mm F2.8 DC DN C:
And these are the 58mm filters that we recommend for the Olympus ED 12-45mm F4 Pro:
Lens Mounts
The Sigma 18-50mm F2.8 DC DN C has the Sony E lens mount whereas the Olympus ED 12-45mm F4 Pro has the Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount and OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Leica L and Fujifilm X mounts.
Focal Range
Sigma 18-50mm F2.8 DC DN C has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-75mm when used on a APS-C / DX format camera.
On the other hand, the Olympus ED 12-45mm F4 Pro has a focal range of 12-45mm and 3.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-90mm when used on a FourThirds format camera.
