However, if not equal to 300, 400 or even more Euros to spend on a full-fledged macro lens, but once wants to break slowly to see whether close at all "his / her thing" is, the is definitely an achromatic close-up lens is recommended. And who, like me, not always with the complete equipment would go out incl. Macro lens, but just going to something required for an occasional close-up "on the go", which would set a achromatic close-up lens to the camera bag, because that is much small, handy and above all lighter than another interchangeable lens. Whether with +3 or +5 diopters, it depends on which lens (focal length!), The lens should be used and how big you want to capture the image on the sensor.
Worth a total I rate the Marumi Achromat +3 with 4 stars because it is a well-made product, with the local or macro shots of good quality are possible. For 5 stars the picture quality would have a little better and the handling regard. Shooting distance be easier, because it is precisely on this point one is unfortunately very limited. Nevertheless, the product is definitely worth the money!