bevdig posted an update 3 weeks, 3 days agoThis was an experiment using the Leica 70mmCS lens with the addition of a Tiffen #3 Fog filter. The filter smears highlights into darker areas and keeps blacks from going to full black, which is the effect you get in a foggy situation. Actual sharpness is not damaged as would be the effect of using a diffusion filter. I deliberately let the highlights go to full white, which normally would look like an exposure error, but in this case I think the effect is quite lovely. I have had these filters in #1 and #3 grade in 67mm size, purchased years ago for my film cameras. I discovered that with the use of a step-down ring from 82mm to 67mm, the filters are slightly wider than the clear cover glass on the 70mm lens, and do not vignette the image at all, something to keep in mind when you consider the cost of filters in the 82mm size. This also means I can safely use my Zeiss Softar filters in 67mm size.