S5: reload

My first s⁵ body was acting curiously so I sent it back, along with the 20-60mm that came with no hood. 

I have other versions of each on the way; we'll see if it makes a difference in my black-frame experience, or if it's a firmware thing.

I found two additional items that were persuasive: 

• a Sigma SA-mount USB dock and 
• a 100-400 dg dn in native L mount. 

The dock might awaken the AF on the 28-300, and the 70-300 Apo might also benefit!

The 100-400 is more of a beast than I prefer, but reviews are more consistently positive than the (few) other long options available at the moment. I suppose an L mount dock would now prove useful too.. we will get one at some point! It shares the 67mm filter size of the 20-60, which saves a whole 10 grams or so in the overall kit..🥳

I'm still hopeful that a ~50-200mm zoom designed for the s⁹ will be offered soon, but if not one of the SA options will serve as a shorter telephoto.