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The following opinions have been automatically translated with Google Translate.
  | sent on 02 Gennaio 2023 Pros: Magnification, lightness, blur effect Cons: micrometric focus, low light Opinion: I am fond of this lens because it is the first one I started to "play" with, mounted on my father's SLR (which I still use, the EOS 2000D). I love all the features and with a little patience you get used to shooting even in non-optimal light conditions or with uncooperative subjects. The color rendering seems pretty good to me, but in terms of sharpness it is difficult to get a noteworthy shot, probably both because of the intrinsic quality of the lens (certainly not excellent) and because of the high iso + very fast shutter speeds to which you are forced to shoot, especially if you want to avoid shake (or reduce it as much as possible). The best results are certainly obtained by mounting the camera on a tripod but frankly I think you lose the flexibility that such a lens wants to guarantee compared to a traditional telephoto lens. If I had to recommend it? Surely yes, to approach the world of retroreflectors. For those who already know them and want a further piece to add to the kit, I would go on much more noble brands (even if finding well-functioning "vintage" pieces at non-inflated prices is a great challenge ...). Overall, the greatest value of this lens lies in the ability to train those who approach manual focus (because it drives you crazy!), developing the sensitivity necessary for fine adjustments. And then, secondly, but not least, in the possibility it offers to look differently at subjects that perhaps we often take for granted, especially when what is out of focus takes on the nice donut shape! :) |
 | sent on 13 Aprile 2020 Pros: Value for money, compactness Cons: Insensitive focus adjustment, sharpness, adapter need Opinion: Purchased for a few pennies, a precious lens was immediately detected in my Sony APS-C kit. The stabilized sensor of the a6500 allowed me some usability even without tripoid. I often paired it with a 2X teleconverter giving me an equivalent field angle of 1500mm (Photographed car number plates more than 1km away) The focus adjustment ring deserved a less soft mechanism and above all more multiplied, because a stable microregulation is impossible. The lack of sharpness is felt, but at that price what to expect from a catadiotic lens? Tripod practically obligatory. Very recommended for what it costs. |
 | sent on 13 Aprile 2020 Pros: Definitely the price, the construction seems solid, absolutely fun. Cons: Image quality does not excel, easy micromox ..... but we're talking about a super cheap 500. Remember the t-mount adapter to the camera format you are using. Opinion: Lens definitely fun, 500mm for the price of a 50mm f/1.8 (it is only found used since it is out of production) and with a few euros you will find the duplicator, which however makes it even more difficult to handle, but it becomes a 1000mm .... practically a telescope. To be used exclusively on a good easel. Ring booke due to the mirror configuration of the catadiotter allows special light effects. All in all rather sturdy construction. I mounted it on the EOS R with EF adapter - t-mount over the RF EF adapter of the R, both with contacts, the machine goes into crisis.... for the benefit of anyone just insert a piece of tape to isolate contacts between the 2 rings and of course Set the "release of the limiter without goal" in the menu C.Fn5. Absolutely recommended for those who want to try such long optics without spending a capital..... if then the experiment likes you can easily think of buying a lens from "thousand and a thousand" euros .... After all, the investment is palious |
  | sent on 03 Settembre 2016 Pros: Compact and lightweight (in relation to the focal) - solid construction - Price - blurred (disengagement between the focal planes) Cons: Limited use to static subjects Opinion: Had in test x a week - use a Canon 1dIII from the fantastic optical viewfinder and are accustomed to using optical MF from fish eye to medium telephoto - contrary to what I thought, the optical quality and '+ that dignified and in any case it is the last problems --- the maf, without the use of a tripod and live view and 'practically impossible, x want the shallow depth of field due to the long focal length, but particularly because of the maf ring, smooth and precise but with too short a ride x 'optical requiring maf millimeter (especially for distances less than 10 meters) - said that, with static subjects and a lot of patience, gives good shots, (conventional optical views do worse), with the characteristic of offer a break between the focal planes "monstrous" (my 400 f. 5.6 pales in comparison) ---- returned xche 'x my kind of shots (freehand or monopod) was unusable |
 | sent on 09 Luglio 2016 Pros: Price, sharpness, color Cons: Manual focus (if you can call a counter) - need to use the adapter Opinion: I bought it during a solar eclipse and the eclipse of lunarnUn great lens for me, even "fun" to use the manual focus, aperture and aperture fissirnrnOvviamente I consider it necessary to use a tripod. Ah, if you decide to buy it, do not forget adapter (both canon for nikon) |
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| sent on 02 Luglio 2016 Pros: Price, construction, use charm, absence of chromatic aberrations. Cons: No, if you are aware of the type of goal. Opinion: For me it is pure fun, the manual focus and the Fixed Iris really make every picture a picture "thought." In my judgment it is a bench School that every photographer should try because each photo has to be really studied, and above all helps to know more about the possibilities and the limits of your camera, having set all commands in manual mode (in my case I I did learn to find the best setup in the picture style). And 'certainly not easy to use, but I think it's just that its nice. To make the most need a good stable tripod, live view with 5x or 10x magnification, the self-timer to 2 seconds or remote shutter release and the anticipated lifting of the mirror. By doing so, with my little eos 100d I took pictures of the moon and razor-sharp close up flowers (the Minimum focus is indeed about 1.8 m) .rnIl not high contrast, which under certain conditions can be observed, and 'it is easily improved by setting ad the picture stylein the car and is working a minimum of pp (also consider that no chromatic aberrations) .rnConsigliatissimo for anyone who considers photography an art and a continuous challenge, not only the pursuit of the fastest autofocus ... |
 | sent on 13 Maggio 2016 Pros: Price, construction Cons: Focus, practically forced to use the tripod, collimating mirrors (is a catadioptric). Opinion: I took this lens in a very short price (had been made on amazon). In reality I wanted to take for astrophotography, suitable thing for catadioptric (is not nothing else that a miniature telescope) but I wanted to test it in a little more normal scenarios. The stand is in my opinion a must for me is not a problem because I spend most of the time studying the framing and then always use. The focus is difficult, and not having the diaphragm, you have to play on the exposure times (and here comes in handy again the tripod). The quality is obviously not excellent, but certainly I would do the purchase, the price / quality ratio is probably one of the best on the market. It 'also interesting how the bokeh appear (in the form of small donuts) .rnRicapitolando, is definitely a lens that requires a lot of thinking to the scene to be photographed, which limits a lot of scenarios of use. |
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| sent on 06 Agosto 2015 Pros: Fascination with how it works, remarkable enlargements on the cheap Cons: manual focus prohibitive, always shake-and lack of fine detail for enlargements driven such as photographs of the moon Opinion: Very fascinating how it works conceptually, a game spechci intriguing. Unfortunately it is very difficult to use, almost prohibitive unless you have a full frame. I have a D3200 and especially for photos of the moon is a scourge ... the focus is atrocious and the shot is always missing sharpness and detail and smooth edges. sin, it would be enough that the first lens to be of better quality and efficiency, and surely all would be better though more expensive. I would like to see the comparison with the top class nikkor 500mm |
 | sent on 26 Maggio 2015 Pros: Light weight, low cost Cons: Images often very contrasting and tending all'azzurrino (on aps-c for me is unusable), difficilissama the manual focus, a tripod is a must Opinion: Bought a few years ago and combined with the aps-c sensor of canon 60D this lens I basically useless (very poor overall image quality) so much that I immediately put aside until the arrival of my new EOS 6D full frame. rnih this case things have definitely improved although not in an exceptional way, but now I think it is safe to use with all the conditions of the case (including the annoying blur onion). rnEssendo an 'optical dark with a very long focal length and free of AF, the manual focus is very difficult (it's really hard to hit the fire, needs calm and patience) and therefore the stand is a must. If the photographed subject is well contrasted and well lit by sunlight image appears adequately checked. If the subject is in shadow image appears veiled with dominant bluish. A free hand is advisable to keep the high ISO (400-1600) even in daylight to avoid a gra amount of camera shake, and in any casebecause of the difficulty of the manual focus is really hard to take on subjects movimento.rnIn post processing is often necessary to increase (sometimes abused) the microcontrastro and this brings out a lot of background noise (grain), even when shooting at low iso.rnDa buy if you just can not spend more on a zoom decente.rnDopo few years of moderate use known that the adapter for the attack CANON took an annoying game and even tends to turn on itself inside the 'goal. |
 | sent on 02 Ottobre 2014 Pros: cost, weight, compactness, quality of the material Cons: difficulty of use in general Opinion: Also I have bought this lens with medium demands knowing potentially do something stupid. Also I have changed my mind after a trip to the mountains, then in complex environment and without a tripod monopod it. The brightness 6.3 lets you shoot at ISO 400 with a time of 1/600 in full sun (nikon D60). Sure dusk starts to become difficult to work freehand, but a tripod can solve problems. Superb in photographs of the moon, yield is exceptional even compared to nikon 300.rnIn final working a lot to learn but when you understand how it works you can photograph a helicopter in flight freehand without the ciccare focus.rnLo advice but I would not take never a catadriottico F8 |
 | sent on 26 Settembre 2014 Pros: Weight, modest cost. Cons: Shortly contrast, requires the adapter. Opinion: Purchased for a tele pushed, after reading on another forum concerning catadioptric lenses, conscious of finding a poor quality, I had to think again. The lack of contrast can be removed with a lens hood (DIY) and PP. The lack of PdC forces you to "think" the picture a bit 'more, but the results are really remarkable. The effect on bokev gives the blurred photo of the features uniche.rnEd be aware that for best results it is almost necessary to add a zero to the amount spent, I do recommend this goal. |
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