Fitting the 600/4 in the 200-400 bag.

Whilst waiting for Lowepro to release an updated version of the Lens Trekker 600 (seems the older one isn’t quite big enough for a D3 & 600 VR so they are making the bag larger) I decided to see if I could get my non-VR 600 f4 in to my 200-400 bag as a stop gap [...]