You're welcome Art, and Thanks... yeah it was time for an update and I'm not getting any younger... I just found it really cumbersome at times with the big rig and tripod... not the ideal set up for swamp slumping and marsh wandering.I have had to back track a few times instead of jumping the stream, while carrying the Telephoto, now I can just jump, and keep going.
I know a lot of people that have the 500 and 600, super awesome lenses, but I really like the 400 for it's mobility. I have taken some nasty spills going thru the bush and it's light enough that I can hold it up while I roll around on the ground,,,lol
Oh Yeah... I love my 600mm, but there were times it just didn't let get to where I wanted. This new one will be so much better for jumping those grass hummocks in the marsh and crossing the streams I find there.This has just enough magnification to make it Ideal for some of the places I have in mind for exploring!