sRAW functions

Like the EOS-1D Mark III and EOS-1Ds Mark III, the EOS 5D Mark II and EOS 50D cameras have an sRAW (or Small RAW) function that allows photographers to choose between shooting at full resolution or at a reduced pixel resolution. The EOS 5D Mark II and 50D now go a step further and provide two sRAW functions sRAW 1 and sRAW 2. The EOS 5D Mark II has a standard full resolution of 21.1 megapixels, with sRAW 1 offering 10 megapixels and sRAW 2 offering 5.2 megapixels. The 15.1megapixel full resolution EOS 50D offers 7.1 megapixels in sRAW 1 and 3.8 megapixels in sRAW 2. The sRAW functions allow all the flexibility of RAW without the heavy file size if it is not required.
Camera settings
EOS 5D Mark II