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The following opinions have been automatically translated with Microsoft Translator. | Zenit MC Zenitar 16mm f/2.8 Fisheye Pros: Price, construction, good colors, yield in the center Cons: not exceptional edges, but for what cost do you expect? Opinion: I took this lens to have a cheap wide angle to mount on the Sigma SD10, trying to build a foveon kit at limited costs, even more. As a wide angle on the Sigma it would be equivalent to about 28mm. I say it would be equivalent because the distortion is considerable (it is a fisheye ...) and therefore wanting to use it as a wide angle in certain photos must then be corrected via software in postproduction, and therefore you have to frame a little wide, because part of the frame will go away. So the equivalent 28mm is reduced a bit. On the other hand, using it on aps-c the drop in yield at the edges is shown much less (for obvious reasons). The color rendering is not bad and also the sharpness, if you close the aperture a little, is fine and does not sacrifice the yield of the foveon: the sensor is not very dense. How it goes on sensors with many megapixels I can't say, but neither do I care. Used on the 6D, however, it defends itself: the sharpness drops at the edges but remains good in the center (we are always talking about a 20mpx sensor) and it is still a fun toy, even if I do not plan to use it much. But should I feel like fisheye, for occasional uses it is more than fine (and then who is it that makes non-occasional use of fisheye?). The front cap of my specimen for now is fine, and along with the lens have also arrived three colored filters for the BN, to be mounted at the rear. I don't think I'll use them, but maybe someone might be interested. Using it with adapters you have to lock the piston that transmits the automatic of the diaphragm, otherwise the lens will always be at full aperture, unless you use adapters that block it, but I avoided using this type of adapter so as not to increase the draft too much. Locking the piston is a half-hour job, perfectly reversible, in case you want to resell it or use it on old analog cameras. In short, for what it costs it is good, solid and fun. sent on September 04, 2021 |
 | Kenko Teleplus 1.4x HD DGX Pros: Price, compatibility, weight and size Cons: Image quality, especially chromatic aberrations Opinion: A cheap little toy to keep in your bag. Used with the canon 55-250 efs works discreetly, but at the maximum focal point the autofocus becomes quite slow and struggles to hook the subject, in poor light conditions sometimes it does not make it. But the situation improves a lot going back a few tens of millimeters of focal. Vignette a little, the images flatten and a bit of chromatic aberration appears. I would say that it is a useful contraption because it allows you to take home some otherwise impossible image when you need a really long focal point, or to put yourself in your pocket when you only go out with a goal, thinking that you never know, maybe it could come in handy, and for what clutter ... For frequent use the pairing described above I do not think can give much satisfaction. On the other hand, for frequent use perhaps all multipliers are to be avoided... sent on February 26, 2021 |
 | Canon EF-S 55-250mm f/4-5.6 IS STM Pros: Price, focal excursion, stabilizer, autofocus Cons: lampshed to buy aside, made good but not excellent, but given the price I do not consider it a defect. Opinion: A fun cheap handyman telefare. As far as it is costing, you can do a little bit of everything if you don't have exaggerated pretensions. Obviously it has its limits: it is not very bright (but the stabilizer is excellent and helps to put a piece of sticker on it) vignette a little open, the sharpness of the image is acceptable but not at the height of higher level optics. Given the remarkable focal excursion it is neither heavy nor bulky. If you want superior results in the specific fields of application of course you have to equip yourself with more specialized and expensive optics but as a "battle" telefare, to keep in the bag is great. Unfortunately, the lampshed has to be bought apart. As usual it is not clear why you then have to spend more money on a trivial (but indispensable) plastic cone. sent on January 23, 2021 |
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