>>3342363>>3342356I should add, the reason compactness in vintage lenses is so important is because the adapter normally adds a ton of size to any lens, no matter how small. Olympus famously managed to make stupidly compact lenses, even up to their 135mm they're all tiny compared to the competition.
Make sure you grab the multicoated versions, those have less lens flare. They're donated by having an "MC" on the front of the lens.