>No one has mentioned that GGS now makes glass covers that snap >on. I have them on my D3s, D700 and D300 and they work >perfectly.
Thanks for the tip. I found some of these GGS Snap-On covers at Amazon. The one for the D800 is at URL: http://www.amazon.com/dp/B008LR9WDK/ref=pe_62860_26685960_pe_vfe_dt5 I sent a question to the seller via Amazon and got back a response that this kit is for the D800 only. The seller, BestDealUSA, did not have any for the D600 or the D4. I've not looked for other sellers for a D4 or D600 GGS Snap-On kit. I think that such kits are not yet available.