tom_uk
Established
Thanks for the responses
Thanks for the responses
Many thanks for all the excellent and thoughtful responses. Given that so many of you came up with good reasons for having either of them, the answer to my original question seems to be: Both!
Here's another factor to toss into the argument: use on a digital camera, which at the moment means the M8. In this scenario the 75 is acting like, what, 100mm? while the 90 is out at 120mm? That latter is a bit long, and (given the M8's VF magnification) will be harder to use anyway. So if future compatibility is an issue (leaving aside for the minute the prospect of an M or M-compatible with a full-frame sensor), then the 75mm would be the better buy; a 90 would have less utility. (This is where I get flooded with responses from people who are happily using a 90mm on their M8...) in the long-term.
Sorted, then - I'll have a new 75mm Summicron and s/h 90mm Elmarit!
Thanks for the responses
Many thanks for all the excellent and thoughtful responses. Given that so many of you came up with good reasons for having either of them, the answer to my original question seems to be: Both!
Here's another factor to toss into the argument: use on a digital camera, which at the moment means the M8. In this scenario the 75 is acting like, what, 100mm? while the 90 is out at 120mm? That latter is a bit long, and (given the M8's VF magnification) will be harder to use anyway. So if future compatibility is an issue (leaving aside for the minute the prospect of an M or M-compatible with a full-frame sensor), then the 75mm would be the better buy; a 90 would have less utility. (This is where I get flooded with responses from people who are happily using a 90mm on their M8...) in the long-term.
Sorted, then - I'll have a new 75mm Summicron and s/h 90mm Elmarit!