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The following opinions have been automatically translated with Google Translate.
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 ...
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.
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
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.
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
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.
The following opinions have been automatically translated with Google Translate.
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