The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 10-25mm F1.7 and the Sigma 24-70mm F2.8 EX DG HSM 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 10-25mm F1.7 is the longer of the two lenses at 128mm. The Sigma 24-70mm F2.8 EX DG HSM with a length of 95mm, is 33mm shorter. On the other hand, the Sigma 24-70mm F2.8 EX DG HSM has a larger diameter of 89mm compared to the Panasonic 10-25mm F1.7's 88mm 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. Panasonic 10-25mm F1.7 weighs 690g, which means it is 100g (12%) lighter than the Sigma 24-70mm F2.8 EX DG HSM which has a weight of 790g.
Filter Threads
The Panasonic 10-25mm F1.7 has a filter size of 77mm whereas the Sigma 24-70mm F2.8 EX DG HSM has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Panasonic 10-25mm F1.7:
And these are the 82mm filters that we recommend for the Sigma 24-70mm F2.8 EX DG HSM:
Lens Mounts
The Panasonic 10-25mm F1.7 has the Micro Four Thirds lens mount whereas the Sigma 24-70mm F2.8 EX DG HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 24-70mm F2.8 EX DG HSM is also available in Canon EF , Pentax KAF3, Sony Alpha and Nikon F (FX) mounts.
Focal Range
Panasonic 10-25mm F1.7 has a focal range of 10-25mm and
2.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
20-50mm when used on a FourThirds format camera.
On the other hand, the Sigma 24-70mm F2.8 EX DG HSM has a focal range of 24-70mm and 2.9X zoom ratio .
