harryf1

many thanks for the helpful replies. Just bought a used 150 non-OS in near mint condition. Have only tested indoors so far but looks very sharp and will give me some distance for the friskier...

I have the CANON 100 L, and the 300 F4 IS, both great for butterflies. I have been looking at the SIGMA 150 macro for a little more distance and macro capability for the more 'easily spooked'...