Monday, July 12, 2010
The Sigma 30mm f1.4
However, I've recently become something of a health nut. I even started a separate blog to record my progress. Since the new blog is dedicated to fitness and healthy lifestyle, I find myself taking lots of food pictures. The Sigma (with its ultra-fast f1.4 aperture) allows amazing shallow depth-of-field, which, in turn, results in interesting pictures of food.
The Sigma 30mm f1.4 is a DX-optimized lens, which means it works on DX sensors such as D40, D80, D300 etc. It will not work correctly on full-frame sensors such as D700, D3, D3X etc.
It has a HSM (Hyper-Sonic Motor) on its body, which allows for fast and silent focusing. The HSM also allows the lens to be used on bodies that don't have a motor on the body such as the D40 and the D60.
It is not cheap. At around $450, it is something you purchase when you have lots of spare change or you need it for professional work.