For security reasons, I would advise against publishing the serial number on a public forum. By all means, exchange it by PM with anyone that requests it, but openly publishing it is not such a good idea, in my opinion. After all, what’s to stop any outsider from reading your post, making a note of the serial number and then a few months later, claim that his lens was stolen and he has a record of the serial number to prove it was his! Perhaps I’m just being paranoid, but you can’t be too careful these days.
I need longer Lens than 300mm 2,8
Shooting birds and sport for sport i have 70-200 135 and 35mm now i need maybe old 500mm or 400 2,8 But $$ for 400mm 2,8 are crazy .
maybe someone have old 500 4,5 or 400mm 2,8 ??? for sale