Full-frame cameras are cameras using sensors with a frame size of 35mm film. APS-C cameras (also known as Crop machines) have smaller sensors based on the dimensions of the Advanced Imaging System, which correspond to the dimensions of modern imaging systems. Your choice depends on what you intend to photograph.
Questions: I want to buy a good DSLR, but I got distracted between Fullframe and Crop, tell me pros and cons?
At the equivalent focal length, a large sensor will give you depth of field in the image. Therefore, full-frame cameras are ideal for portraits where you want to use a wide aperture to blur the background and make the subject stand out.
With an APS-C camera, you can get more benefits than a full-frame model, if you need even greater depth of field. Let’s say you shoot a landscape and want to keep the sharpness in the foreground (which means the Crop series better erase the background because the same lens focal length, it has a deeper field of view). This can be quite difficult with a full-frame camera. With a Fullframe camera, if you do not use a small aperture you will have to choose a slow shutter speed.
For anyone who loves sports photography, the best top choice would be an APS-C camera, such as the Canon EOS 7D or Nikon D300. Especially if the pricing policy of these cameras is right for you, it’s cheaper than a Fullframe. And moreover the Crop factor gives you more effective focal length.
For example, a relatively light 70-300mm zoom lens will provide an effective telephoto range, with a focal range of up to 480mm on Canon camera body and 450mm on Nikon, Pentax and Sony. When attaching a 70-300mm lens on a Fullframe, you will get the right focal length of the lens as the largest zoom is only 300mm.