Hmm, I was just thinking (whilst out shooting architecture yesterday) that I had a big focal length "gap" between 65mm and 135mm... I will give this some thought over the next few hours...
Don't think too long Marc, that 90mm Caltar is a superb lens I've had one for over20 years - it's a re-branded Rodenstock Grandagon, well coated almost impossible to get flare even shooting straight into the light with the sun in the image circle and very sharp, and that's a great price .