Only days after Sony introduced a trio of new entry-level Alpha DSLR camera, Pentax has delivered one of its own — though, this one is definitely not low-end. Aimed to take on the likes of Nikon’s D300 and Canon’s 50D, the Pentax K-7 features a 14.6MP CMOS sensor and is the first Pentax DSLR to shoot HD video.The mid-range device is fully compatible with every Pentax lens ever made (ever!), and it boasts a new, compact chassis that’s built to be banged up. There’s also a 77-segment metering system, an HDMI