I have the Evans Walker. I usually have one M and three lenses and a blower brush, cable release, hoods and Gossen Digipro and film and a finder or two in the outer pocket. I can get another M with lens mounted in, even an M5. Plus the Leitz table-top tripod with small ballhead I've carried it hiking in the mountains all day and the wide soft long-padded strap is very comfortable. I have had this for two years or more and consider anything bigger would be the thin end of the wedge.