If anyone want to "borrow" a lens, it is better and easier just rent a lens, can just find out the advertisers offering gear renting services in Commercial Services Offered
people here are hardly know you, how to entrust a few thousand dollars lens to a total stranger? you may feel alright to lent to someone you don't know but not everyone feel the same way as you.
anyway, the topic has noting to go with Canon gear or any photography technique discussion, and starting getting OT, thread moved to Kopitiam