Hello,
We've created an 'optical low pass filter killing' action for Photoshop, that makes images appear really clean and sharp. We have tested it on few dslrs and medium format images from 50 to 80 megapixels, and the results have me and my fellow photographers really excited.
It is a free download available on my commercial site stylemypic.com, and it is called PRE Touch. It is supposed to work better on out of camera images, but works well on moderately retouched images. The image in before/after is one look you can achieve(my personal taste), but there are opacity sliders to fine tune to your taste if you prefer a sharper image and less blur in the color transitions.
I know most of you have experience with the best equipment in this forum, and I would like to know your inputs about it. Some tinkering may be required for you to get the perfect look. Check it out and let me know how it works for you all.
Thanks,
Sid.