The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus M 25mm F1.8 and the Panasonic Leica 35-100mm f2.8 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. Panasonic Leica 35-100mm f2.8 is the longer of the two lenses at 100mm. The Olympus M 25mm F1.8 with a length of 41mm, is 59mm shorter. Besides being longer, the Panasonic Leica 35-100mm f2.8 also has a larger diameter of 67mm compared to the Olympus M 25mm F1.8's 56mm 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 M 25mm F1.8 weighs 136g, which means it is 224g (62%) lighter than the Panasonic Leica 35-100mm f2.8 which has a weight of 360g.
Filter Threads
The Olympus M 25mm F1.8 has a filter size of 46mm whereas the Panasonic Leica 35-100mm f2.8 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 46mm filters that we recommend you to consider for the Olympus M 25mm F1.8:
And these are the 58mm filters that we recommend for the Panasonic Leica 35-100mm f2.8:
Lens Mounts
Both the Olympus M 25mm F1.8 and the Panasonic Leica 35-100mm f2.8 has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3.
Focal Range
Olympus M 25mm F1.8 is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of
50mm when used on a FourThirds format camera.
On the other hand, the Panasonic Leica 35-100mm f2.8 has a focal range of 35-100mm and 2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 70-200mm when used on a FourThirds format camera.
