I've been a part-time wedding photographer for a few years now and I'm looking at going full-time for next year. Having recently sold one of my two 6D bodies, I'm in the market for a second camera. I prefer to shoot with two bodies and primes. In an ideal world, I would have two bodies with dual SD card slots. As I'm looking at the 5D3, I'm doing some math:
What I have:
I only ever use the lenses in bold, especially when it comes to weddings. It would be cheaper for me to sell all of this (for an estimated $3,220) and pick up the following than it would be to buy a 5D3 (used market value of $1,600):
Estimated cost: $4,075
Net loss: $855
Some considerations: This would be a big camera upgrade in terms of auto-focus performance and a smaller, but existent one in dynamic range. I would also have two matching cameras with dual SD card slots. Granted, I would be replacing 6 lenses with 3, but simplifying isn't the worst thing in the world. Correct me if I'm wrong -- the 17-40L replacement is an upgrade, the 35 ART replacement is either an upgrade or an even replacement, and the 85mm f1.8 replacement is an upgrade. I'd be surrendering my 135mm focal length, but I only ever pull this thing out for 5-10 shots a wedding during the ceremony. I can get by without it and maybe eventually replace it with something like the 105mm macro, which would serve as a dual purpose lens for weddings.
TL;DR I can replace and upgrade all of my gear for less money than it would cost me to simply add a 5D3 to my kit. Am I crazy? Any thoughts are appreciated!
EDIT: Upon further research, I may be sold on the 35mm f1.8G, to save another $600 or so. At that point, I'm nearly breaking even for what feels like an overall upgrade.