What is the Full Frame DSLR?

Nowadays, we have many various DSLRs on the market. You may heard many different words to describe DSLRs, such as DX, Full-Frame, APS-C, FX and etc. In fact, there are two major kinds of cameras which depend on their image sensors.

First, I want to introduce the Full-Frame to you. Back to the age of film, almost every cameras were using the standard size of film which is 24mm by 36mm. Now, all the major camera manufacturers developed digital cameras base on the sensor. If the sensor's size as same as the film and then we call it "Full Frame". For example, Nikon D700, Nikon D800, Nikon D600, 5d mark iii, and 5d mark ii are all Full Frame DSLRs.

Second, there are many DSLRs have crop sensors. We can call those cameras "APS DSLR". They have smaller sensors than FULL FRAME sensor. APS stands for Advanced Photo System.

APS DSLRs are much cheaper than FULL FRAME with less performance. At the same time, APS DSLR uses special lenses.