For Canon EOS 1D/ Mk II/ Mk IIN/ Mk III & 1 Ds/ Mk II/ Mk III digital SLR cameras, the Ec-B Focusing Screen (New Split) features a matte field with split-image focusing spot in the centre. It is used for general photography with all lenses. A double echelette prevents blurring of the split, even when using lenses slower than F/5.6.