Sean wrote:I always keep:
Tamron 17-50 F/2.8 non VR
Canon 70-200 F/4 L non-IS
Pretty much covers everything I could need.
Definitely a light and affordable lens kid to fit my low budget.
That's a good start, but I feel like with the crop factor you're going to want one more lens that can go wider.
Here's what I have ready to go with the EF mount whenever the camera gets here...
Canon 10-22mm f/3.5-4.5
Canon 17-55mm f/2.8 IS (feel like this will be used a lot)
Canon 70-200 f/4 IS (feel like this won't be used much)
Rokinon 35mm T1.5 Cine (as a main medium shot portrait prime)
Canon 50mm f/1.4 (as a close-up prime)
Rokinon 85mm T1.8 Cine (as an intimate close-up prime, although this might be too extreme for most indoor shots - feel like this one isn't going to be used much with the BMCC, got it more for the C300)
I'm debating about the Rokinon 24mm T1.5 Cine, I've heard mixed results about that one. I'm going to have to see how either the 17-55mm or 35mm does first with the wider shots.
If you're building a basic kit from scratch and need good versatility in the fewest amount of lenses, this is probably your best bet (for the EF mount, don't know much about MFT lenses) :
Tokina 11-16mm f2.8
Canon 17-55mm f/2.8 IS
Rokinon 35mm T1.5 Cine
And if you need the telephoto, throw in the 70-200mm.