Sony A99 full-frame SLT

Sony is angling for the full-frame market with its Alpha A99, which looks like a traditional SLR but isn't. SLRs have reflex mirrors (SLR stands for single-lens reflex) inside that flip out of the way when a photo is taken, but Sony's uses a fixed pellicle mirror that lets most of the light through straight to the image sensor. The sensor feeds an image to an electronic viewfinder. Sony's first attempts to crack the full-frame market weren't very successful, but the company is trying anew with its SLT (single lens translucent) design.