I've been a busy little bee over the last couple of days with my modifications for the Tammy 150-60mm G2 lens.
The switch guard: these switches protrude just too much and as a result tend to get knocked....you go to shoot and there's no AF, or...focus limiter prevents reaching infinity etc......the first part was to tackle the problem with some form of guard shown in 6123 jpg image. It is made of fibre-glass charged polyester resin (white gel coat). Roughly cast and hewn to size with the aid of a Dremmel tool. The finished result was adhered to the lens with a hi tec double sided foam.
The lens foot is removable which is great.... and makes the lens better adapted to H/H BIF......however, the remaining combination of four tripod mounting lugs and the rather hard edged ledge isn't really conducive for comfort.
I cast the collar with the aid of a mould which was the lid of a chicory glass jar, I searched high and low to find something of 92mm diameter which could give a high quality exterior finish and wouldn't melt from the styrene in the resin.....luckily the plastic was unaffected. The collar mounts using the existing tripod lugs, align the dot and just push and twist.
A car acetone based paint was chosen which dried quickly.
It was a lot of fiddling and sanding dust everywhere but I'm more than happy with results!