I used the Sigma 100–400mm for Fujifilm X in the Icelandic Highlands and Rotterdam. Here is what its reach, sharpness at 400mm and handheld handling changed in real photographs—and how it compares with the Fujinon alternatives.

Eight days, four photographers, and a landscape that changed the plan every morning. Here's what actually happened on our 2026 Iceland Highlands workshop.

The process of learning something new often involves making a lot of mistakes. In this article, I will cover some of the common pitfalls I see when post-processing photos.