In this article we will do a SLR camera comparison, between four models: Nikon D40, Nikon D90, Canon EOS Digital Rebel Xsi and the Canon EOS 40D.
Nikon D40
The Nikon D40 digital camera has a resolution of 6 megapixels and an LCD that has 2.5 inches and 230,000 pixels. It can take photos at a maximum speed of 2.5 photos per second. The shutter speed of the camera is 1/4000 sec. The duration of the flash sync is 1/500 seconds.
This camera had help files included and you can also edit photos right from the menu. The ISO varies between 200 and 1600. If you want, you can also use a wireless remote with the camera.
Canon EOS Digital Rebel Xsi
A 12.2 megapixel camera, the Digital Rebel Xsi comes with a kit lens that is image stabilized, sensor cleaning that is built in, Live view and dust removal software. The LCD screen has 230,000 pixels on a 3 inch LCD screen. A bit faster than the D40, this camera can take 3.5 photos per second. The duration of the flash sync is 1/200 sec.
The ISO varies between 100 and 1600. This camera also has a nine point autofocus, mirror lockup, spot meter an option for automatic depth of field. You also have the option of a wireless remote and flash if you need them.
Nikon D90
The Nikon D90 is a camera with 12.3 megapixels and an impressive 3 inch LCD screen with 920,000 pixels.. The Live View also has movie mode, but you don't have the option to autofocus once you start shooting the movie.
You can shoot movies in the following formats, at 24 frames per second: 320x216, 640x424 and 1280x720. It has 11 autofocus points and the ISO is between 100 and 6400.
For live action photos, you can take 4.5 frames per second. The flash sync takes 1/200 seconds and the shutter speed is 1/4000 sec.
Canon EOS 40D
The Canon EOS 40D has less megapixels than two of the cameras above (10.1 megapixels), but it compensates with great performance for live action shots. It can take 6.5 photos per second, with a shutter speed of 1/8000 sec.
The camera's body is made of magnesium and it has weather seals and a kit lens with image stabilization. It also comes with a built in cleaning sensor and Live view, which you can also use with an optional grid overlay. There are six program modes that you can choose from.
