I just got this lens and adapter and I'm having fun trying to manual focus. The NEX screen is really good for this. I'm not always managing to nail the focus but I hope to improve my hit rate over time. I really like the colour/contrast of this lens
I'm using DNGs too but for some reason the English grass greens look too intense whilst the pictures I took in Spain seem just right. I've tried altering the white balance in LR but will probably have to try and alter the green channel a bit although I don't like messing about with this really Can you think of anything else I could play with?