Voigtlander 342/41 Focar 0 (40.5mm)  type_Camera Bags suitable for nearly any camera

suitable for nearly any camera up to 4x5

and it vignettes on an APS-C sensor

The Lowepro Flipside Sport 10AW is a slim backpack with a little bit of extra ventilation on the back and straps (for sporting comfort) and a low profile design (so it doesn't get hooked up on sports things while you're sporting)

For stills or video use

Voigtlander 342/41 Focar 0 (40.5mm) &nbsptype_Camera Bags suitable for nearly any cameraVoigtlander 342 41 Focar 0 diopter for lenses with a 40. 5mm filter thread: according to the included box, this is for a 135mm Super Dynarex, but it should work on anything with a compatible thread. Provides a bit of extra close up capability.