5dm2 setting max level range for auto ISO in Tv mode

[phil-knews]

Hi,

I've recenting bought a 5d mark ii and i normally use m42 lens in Tv mode, setting a min shutter speed and allowing the auto ISO and aperture to correct exposure, with my old 550d i could limit the iso to say 800. This isn't possible with the 5dm2, is there a ML module to allow this or maybe I just can't work it out!

Thanks.