All focusing with this lens is done manually via the very large and well built focusing ring. Unfortunately, there is no depth of field preview scale but there is a distance scale. However, I tried focusing all with Sony’s peaking function, which seemed to work fairly well but still not the best from my initial tests.After lots of use, I found that it is because the lens is a bit soft wide open. Once stopped down to F5.6 or F4, you’ll have no problems at all. Additionally, to get the best results you’ll need to use Sony’s peaking function and the magnification function together.Image QualityOf any lens I’ve used for the NEX system, I have to say that I think Rokinon nailed the sharpness and color rendering better than anything I’ve previously seen. However, the lens needs to be stopped down to F5.6 in order to get these results. Otherwise, you won’t necessarily see the same magic that I did.We posted some of the results on our Facebook page before, and you readers seemed to really like the images. Additionally, Rokinon themselves posted images.