Reader Dan N emailed to offer his take on the importance of Live View, and how it varies between camera bodies:
I've been a DAP/ZF subscriber for a year and I'm happy to report that it's
taken my photography to a new level of technical excellence. I began using
Live View on my Nikon D90 and I've gotten the 50mm f2, 35mm f2 and 100mm
f2 ZF lenses, which are as good as you say they are.
However, I was always frustrated with the poor quality of the Live View
image on my D90. All I got were interpolated pixels on my screen, and
getting precise focus required luck and a lot of annoying focus
bracketing. It wasn't until I rented a new D7000 that I realized that Live
View was SO much better on other cameras! This was such a revelation that
I thought you should add a note to your LiveView pages that the D90's Live
View image sucks and is little better than using the viewfinder. FYI, the D7000 is an excellent "prosumer" camera. I can't wait to upgrade.
...The D90 screen is excellent (as far as I know, it's the same 3" 920K pixel LCD that's on all of the good Nikon DSLRs these days). It's the Live View that sucks. I vaguely remember reading somewhere that the specs say you can zoom 6.7x, but as I commented before, a lot of those are interpolated pixels. I'm no engineer, but it seems as if they just took the 720p video mode and used those pixels for Live View. When I shoot with the D7000, there is a noticeable "shift" into high resolution Live View mode with no noticeable interpolation and excellent detail. Perhaps the processor speed of the D90 couldn't keep up? I love the D90 otherwise, it's been a trusty camera for my student budget!
Good suggestion, on my to-do list. Renting is always a very useful way to explore alternative cameras and lenses.