Excellent representations of this weeks theme everyone. I hope mine aren't too far off the beam.
Here are a couple of shots I took using my 5D3 plus Sigma 35 f1.4 lens. These are of my Sony a7r and Sony FE 35mm lens first with just the Sony FE 55mm lens cap mounted and then one with both 55mm lens cap and hood. Both cap and hood fit fine and there was no vignetting using this combination. Woohoo! (I would have saved myself a lot of money had I known this a couple of weeks ago).
Sony FE 35mm lens with Sony FE 55mm cap and hood by navydoc45, on Flickr
Hey Doc, that's pretty cool! I tried using a lens cap and hood combination a while back, but all my pictures came out black! What was I doing wrong?