Not sure whether this is the right forum to discuss slide projectors, so please bear with me? A while ago I acquired a Kindermann Silent 2500 projector for 35mm slides, which I like for its' full features and ease of use. It has the Kindermann f2.8 90mm lens. However, compared to my old (owned from new in 1970) Hanimex Rondette manual projector (with f2.8 85mm Hanimar lens), the colours appear rather washed out and lacking saturation/vibrancy, even with the lamp intensity reduced to match that of the Hanimex. I am assuming that the lens must be the culprit? If so, could anyone recommend a better lens for the Kindermann (I have removed it, and it unscrews with a very coarse thread.......I have tried to substitute the Hanimar lens into the Kindermann projector, but can't work out how to remove the lens.........it doesn't seem to unscrew, so I don't suppose it would fit anyway). I know that the Hanimex was a fairly budget model in its' day, so I was very surprised that the much more modern Kindermann, for all its' bells and whistles, has an inferior optical performance?