SUMMARY
While Sony's new 100-400mm G Master OSS lens boasts an attractive constant f/4.5 aperture, a Sony photographer finds the predecessor's f/4.5-5.6 aperture sufficient for their needs. The primary reasons for sticking with the older model are the new lens's high price tag of over $4,000 and its increased weight and size, which are less practical for adventure photography. Despite the new lens offering faster autofocus, the older version is deemed a solid, relatively lightweight performer that delivers comparable results for the author's work.
TAKEAWAYS
New Sony 100-400mm G Master OSS lens features a constant f/4.5 aperture.
Older Sony FE 100-400mm f/4.5-5.6 G Master OSS is significantly cheaper and lighter.
The author prioritizes portability and cost-effectiveness over the marginal aperture gain and faster autofocus of the new lens.
The older lens is considered a reliable performer for adventure and landscape photography.