
A few weeks ago I wrote about the beauty of using series filters with cameras. To refresh your memory, series filters are filters of discrete size ranges that fit inside special adapters that can be found to fit a variety of cameras and filter thread sizes. For example, Series VII filters are a good size for most 35mm cameras. Shown above is a special diopter from Tiffen (Vari-close-up lens) that is focusable and fits on the front of my Nikon Series E lens with a series VII to 52mm adapter. This particular close-up lens has a focusing helical that also provides adjustable magnification. With the 50 mm 1.8 lens wide open, I can get dreamy, soft images with glowing out-of focus highlights. If I stop down to 5.6 and smaller, I get more typical-looking macro shots that are not at all dreamy, as the lens aberrations in the Tiffin filter become a non-issue at smaller apertures. I also think it has something to do with the way the light hits the sensor on my D70.
Some samples at f 1.8:


You don't need the same exact Tiffen lens that I used. You can use any single-element diopter and get a similar effect. In fact,...