Equipment
I got an email the other day that got me thinking. A guy simply asked “How far do I have to stop down a lens to get maximum performance. I’ve heard two stops from wide open. I’ve heard down to f/8. Which is correct?” I asked him which lens he was referring to, and was […]
Equipment
The most common questions and complaints I hear almost always have to do with AF accuracy, in one way or another, even if they don’t seem like it at first. “I’m trying to focus on this person’s eyes, but the ears are in focus instead,” or, “This lens is front focusing like crazy,” or, “This […]
Equipment
Last week we did a tear down of the Canon 35mm f/1.4 Mk II, an expensive, large, weather-resistant lens. Then we did a tear down of the Sony FE 35mm f/1.4 ZA lens, and expensive, weather-resistant lens with very different technology. Today we’re going to tear down the Sigma 35mm f/1.4 DG HSM A1 (Art) lens, […]
Equipment
As soon as we optically tested the Canon 35mm f/1.4 Mk II lens we couldn’t wait to tear into one for a couple of reasons. One was that Canon has been making a lot of interesting advances in lens mechanics lately, so we’re always excited to look inside their new lenses. Another was that Canon claimed […]
Lenses and Optics
OK, for the first time I can remember, I’ve been browbeaten into doing a test I didn’t plan to do. When Tamron released their neat little Tamron 35mm f/1.8 SP Di VC and Tamron 45mm f/1.8 SP Di VC lenses, I thought, well that’s interesting, and the price point is reasonable and didn’t think about them anymore. But […]
