Edited by George Schaub

The Samsung NX20 is a mirrorless system camera with very high sensor resolution. Just like the Samsung NX200 it uses an APS-C-sized sensor and offers a resolution of 20MP. In contrast to the NX200 it uses an SLR-like body design and an electronic viewfinder with very high resolution. The EVF has 1.44 million RGB dots and offers a very brilliant and sharp image, which makes manual focusing very comfortable. In addition, the NX20 has a large AMOLED swivel screen on the back with a resolution of 614,000 RGB dots.

The Panasonic G5 is a very compact mirrorless system camera that looks like a small SLR, yet has an electronic viewfinder. The EVF has a very high resolution of 1.4 million RGB dots and shows a very crisp and clear image.

The camera is designed for use with the new X lenses made by Panasonic. These lenses have an integrated motorized zoom and servo-controlled focusing system. To accommodate use of the lenses the G5 offers a zoom switch to change focal length rather than a lens ring, just like when using a compact camera.

The Samsung Galaxy is a new type of camera that’s more like a tablet computer with an integrated camera system. However, rather than using a small low resolution camera module (like smart phones and tablet computers) it offers a “real” camera module with an ultra zoom lens. This lens system offers a 21x zoom lens with a focal length of 23 to 483mm (35mm film equivalent).

The Sony (alpha) A57 is based on Sony’s SLT viewfinder system that uses a fixed and semi-translucent mirror. This enables viewing via a live preview on the LCD screen on the back or through the electronic viewfinder. In addition, the mirror reflects the image onto an AF sensor based on the classic phase detection system used by “normal” SLR cameras. The AF sensor works continuously because there is no moving mirror system to cover the sensor when the picture is taken. This aids in continuous shooting speed and when recording videos.