I am not sure what you are referring to as "hasselblad lenses." If you mean Zeiss lenses for medium format SLRs then you can buy them for a number of systems. I'm more familiar with the offerings for the Rollei 6000 series medium format SLRs. As others have said though they aren't magical. There is no substitute for a good lens hood and paying attention to where your light source is. Even with Zeiss glass and a OEM lens hood I still hide my camera behind tree trunks or poles to protect it from oblique sunlight.
Originally Posted by msbarnes