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| sent on 24 Gennaio 2019
Pros: Good compatibility (so far it has worked with all my lenses, old and new, Canon and other brands), good quality, AF maintenance, value for money
Cons: "Only" 1, 4x (but you know when you buy it!), good grafts, but not perfect (sometimes there is a little "game", especially with heavy lenses)
Opinion: Bought used for little money, more than anything else to try it (I have no "series" lenses to multiply), I was pleasantly surprised. Tested on my old 30d with:-Canon 28-135mm f/3.5-5.6: Compatible, full read EXIF data, keeps AF on all points (with good reactivity); -Tamron 70-300mm F/4-5.6: Compatible, full read EXIF data, keeps AF on all points (better than the central), but slows down a lot and with little light often does not hook the subject (numerous "back and forth"); In manual instead it correctly maintains the focus confirmation. This lens at 300mm is already soft on its own, so it's definitely not the best possible choice to multiply, but that's it! -Seimar 500mm F/8 retroreflecting: M42 (screw) mount, with chip adapter; It maintains more or less unchanged its objectively a little poor quality; At the theoretical level keeps the confirmation of focus, but does not hook almost never (I guess because of poor sharpness or other); does not recognize the actual aperture, but "recognizes" the presence of the multiplier (with only the lens marks me "f/1.4", with also mounted the multiplier marks me "f/2.0"). Obviously here they are not made for each other, but they can coexist. -Zeiss 200mm f/2.8 Electric: M42 (screw) mount, with chip adapter; The quality does not drop in an appreciable way and it works very well the confirmation of focus (being a fully manual lens, of course there is no AF to maintain!); Here, this becomes a nice 280mm F/4! Also in this case, the machine recognizes the presence of the multiplier, also multiplying the minimum diaphragm detected. In Summary, for now this multiplier has adapted, maintaining substantially all the functionality, to all the "Accrocchi" that I tried to do. It doesn't turn a donkey into a thoroughbred, but let's say it's not the other way! Considering also the value for money, I gave a vote of 9. |
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