Tag
Sigma 50mm f/1.4 DG HSM Art
2 posts
Lenses and Optics
Practical Use of Field Curvature Graphs – the 50mm Primes
In my last two posts (1,2), I’ve been using field curvature graphs to look at how lenses behave as you stop them down. It’s been a fairly limited data set; basically 35mm prime lenses and some zooms at 35mm. I’m going to keep going with this topic and today look at a different focal length (50mm).…
How To's
Getting Started in Deep Space and Astrophotography
It is sometimes said that astrophotography is one of the most challenging types of photography out there. There are numerous technical problems to overcome, substantial initial investments, and a considerable chance of getting burnt out if you get too frustrated. Luckily enough people have…