No from Trail Camp you go down the regular trail in the direction of the portal maybe 1/4 - 1/2 mile, and then there will be a drainage on your right that you can take down to Consultation Lake. Or you can climb around on the slabs above Consultation Lake to take in the views.
I am not familiar with a route straight down from Trail Crest to Consultation Lake. That would be very technical. People do drop down from Arc Pass, which is more to the southeast. Too steep for me....
Actually this photo from someone else's website is kind of helpful.
http://www.tahoebackcountry.net/features/whitney/images/switchback_thumb.jpg
