I wanted to try close-up photography, but didn't want to buy a dedicated macro lens (although Panaleica 45mm is nice, it's also quite expensive). I solved this dilemma by buying an achromatic close-up filter - Kenko AC Close-Up No. 3. This thing is Japanese through and through Its box and manual don't have a single word in English. This is how it looks like: Subscribe to see EXIF info for this image (if available) The filter apparently is coated and shows deep violet reflections. And this is the first shot I've made with this filter paired with Canon FDn 50mm f/1.8 lens: Subscribe to see EXIF info for this image (if available) Full size: http://photo.torba.com/images/pavel.urusov/f/365eJ44etYWZ9wRbXhrz.jpg It's only very slightly cropped. Image quality is VERY decent, I can't find a hint of chromatic aberration (Canon 50/1.8 shows some strong spherochromatism, but it's ok). Sharpness is excellent.