I am looking into getting into flash photography with my Nex 6 but I'm on a very limited budget. I came across a blog where the photographer was successfully using a Neewer tt560 flash on a Nex6. No ttl and fastest usable sync speed is 1/160. Has anyone used this flash? I know it is rather bulky but it is very cheap and I think it could make a very good slave flash if I decide to upgrade to a better flash later on. Any input would be appreciated. I also looked at the Neewer tt660. This one is even bulkier but it has ttl function. Does anyone know if ttl would work with the Nex6?