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With New York City pummeled by multiple snowstorms this winter, our staff was happy to have the Pentax K-5 around. Fully weathersealed and built to function in temperatures as low as 14 degrees Fahrenheit, Pentax’s new flagship DSLR ($1,470, body only; $1,580, with 18–55mm f/3.5–5.6 WR lens) didn’t even flinch as foot after foot of snow covered our metropolis. And given the image quality that the K-5 delivers, we were just as pleased when reviewing our images after we came in from the cold. In the Lab

For $100 Canon is offering 5D Mark II and 7D owners a chance to send their cameras in and have a locking mode dial installed. Technical Editor Philip Ryan takes a closer look at one of the very first 5D Mark II's to feature this upgraded dial and compares it to the locking mode dial on the Canon 60D:

FROM OUR EDITORS AT PHOTOKINA: In 2011, Sigma will be celebrating their company's 50th anniversary and they're bringing a brand new pro-grade DSLR to the party.

More and more interchangeable lens cameras are going mirrorless these days, but for this pair of cameras, Sony didn't nix the mirror all together. Instead, they made it fixed and translucent so that it could "split" the optical pathway, directing light to both the main image sensor and the phase detection AF sensor. As a result, shooters get full-time access to phase detection AF using the LCD for Live View or the electronic viewfinder.