The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samsung 18-200mm F3.5-6.3 ED OIS and the Olympus ED 40-150mm f4-5.6 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 18-200mm F3.5-6.3 ED OIS is the longer of the two lenses at 106mm. The Olympus ED 40-150mm f4-5.6 with a length of 86mm, is 20mm shorter. Besides being longer, the Samsung 18-200mm F3.5-6.3 ED OIS also has a larger diameter of 72mm compared to the Olympus ED 40-150mm f4-5.6's 64mm 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. Olympus ED 40-150mm f4-5.6 weighs 190g, 65% (359g) lighter than the Samsung 18-200mm F3.5-6.3 ED OIS's weight of 549g.
Filter Threads
The Samsung 18-200mm F3.5-6.3 ED OIS has a filter size of 67mm whereas the Olympus ED 40-150mm f4-5.6 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 67mm filters that we recommend you to consider for the Samsung 18-200mm F3.5-6.3 ED OIS:
And these are the 58mm filters that we recommend for the Olympus ED 40-150mm f4-5.6:
Lens Mounts
The Samsung 18-200mm F3.5-6.3 ED OIS has the Samsung NX lens mount whereas the Olympus ED 40-150mm f4-5.6 has the Micro Four Thirds 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 OM System OM-1 II, Panasonic G9 II and OM System OM-5 for the Micro Four Thirds Mount.
Focal Range
Samsung 18-200mm F3.5-6.3 ED OIS has a focal range of 18-200mm and
11.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-300mm when used on a APS-C / DX format camera.
On the other hand, the Olympus ED 40-150mm f4-5.6 has a focal range of 40-150mm and 3.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 80-300mm when used on a FourThirds format camera.