How well do the lenses perform on the sensor compared to film as far as CA effects and/or pixel blooming? I made some DS2 exposures with my 1.4x tx + 300/8 vivitar this last Saturday of herons nesting in Sycamore trees in the Cuyahoga Vally National Park in NE Ohio. The lcd review showed alot of purple along the tree branches against the light blue sky. At home on my monitor there wasn't as much. The files were PEF, then viewed both with Irfanview and Pentax Photo Lab. When converted to jpegs most of the purple is gone except the thinnest branches are purple.
John