In the financial world, dollar cost average is the process of buying more, often, at regular intervals, basically averaging out the price.. Does the same hold true for printing?? Sorry for the anology but is it better to have a small aperture and longer times or if you can get it done wider and quicker, does it matter....? I prefer 20 - 30 second times for each my black (#5) and White (#0) time. It gives me more time for dodging and burning and I just seem to come out with a better print... Is there any technical reason or am I just doing what I do, with good results?