If you use a professional digital camera, you can't go far without understanding the relationship between sensors, lenses and depth of field. It's slightly more complicated than you might have thought!. Phil Rhodes makes it understandable
When it comes to dedicated lenses and 4k, lots of people have an opinion. One that’s probably worth listening to more than most, however, is that of Cooke Optics chairman, Les Zellan, who tells Andy Stout that he’s not impressed
Phil Rhodes looks at if Samyang's Lenses will be able to compete with in a market with an unbelievable price - eight to twenty times lower than the competition!
Sigma surprised a few people when they announced their new 18-35mm zoom lens with a constant f/1.8 aperture back in April. Now they've surprised a few more by announcing the price - $799