Цитата:от:Saturn
Когда-то давно лет 10 назад был 'старый' photodo так там линзы тестировали с помощью настоящего оборудования Hasselblad для измерения MTF.
Потом они не нашли как на это грубо говоря найти деньги и закрыли лавочку так что инфы про новые линзы у них нет.Подробнее
Скромненько...
Хорошо, давайте перепроверим свои выводы другими обзорами линзы 50/1.2
1. Conclusion
I knew why I purchased the Canon 50mm f/1.4 over the 50mm f/1.8; the more rounded (not pentagonal) bokeh, and the slightly better build. That’s a few hundred bucks. The Canon 50mm f/1.2 L is more than four times the price of the 1.4. This is a cost/value factor we often weigh, and I have personally never once been let down by the better glass I’ve purchased, where I have with less-than-the-best. The aperture may be a bit misleading, I don’t consider f/1.2 useful for me, I have a hard time focusing that shallow of depth of field, and while a good camera body like the 1DX or 5DMKIII certainly help, there’s a little left to your own skill to pull off proper focus. Some people just have it while others, like me, work for it. The optics are certainly worth the investment. Though, for the professional shooter who may bang their camera around and find themselves without a lot of choice as to where they’re positioned for the shot by way of contrast and control of flare; the 50mm f/1.2 delivers.
For the average consumer, however, I’m not sure if they’ll see the difference. Since most people are just looking to achieve a shallower depth of field that the included kit-lens can’t provide, the 50mm f/1.8 will do the trick. More discerning buyers can upgrade to the 1.4 and folks with money to burn can grab the 1.2. It’s the best, but not by the same margin as the price. It’s a pro lens, and with that comes the need for a pro’s experience to handle it.
Cons:
4 x pricier than Canon’s 50mm f/1.4.
f/1.2 is so out of focus that your focus can be out of focus.
Very strong vignetting (inherent in all 50′s though).
http://www.canonrumors.com/reviews/review-canon-ef-50-f1-2l/
2. The EF 50mm f1.2L USM is all about achieving the shallowest possible depth of field with sharp details in the middle of the frame. The trade-off is significant softness, vignetting and coma in the corners of the full-frame when the aperture is open.
http://www.cameralabs.com/reviews/Canon_EF_50mm_f1-2L_USM/Canon_EF_50mm_f1-2L_quality_full_frame.shtml
3. The Canon EF 50mm f/1.4 USM Lens falls in the middle of the three 50s I am discussing in many ways. It has the middle price, the middle build quality (decent), the middle weight (weighing 10.2 oz/290g), the middle size (WxL: 2.9" x 2"/73.8mm x 50.5mm) ... It delivers the middle background blur quality - much better than the f/1.8 but not as good as the f/1.2. It shows the middle amount of CA, but often shows strong halation at f/1.4 (yields a soft, dreamy look). It also shows the middle amount of flare - noticeably less than the f/1.8 and noticeably more than the f/1.2. Again, in the vignetting category, the 50 f/1.4 delivers better performance than the f/1.8 but does not perform as well as the f/1.2 (at the same aperture settings). It is slightly sharper than the 50 f/1.2 from f/2.5 through f/8 or so and slightly sharper than the 50 f/1.8 at all comparable apertures (the f/1.8 wins some Full Frame corner comparisons). The 50 f/1.4 quietly focuses slightly faster than the f/1.2, but is not well damped. The f/1.4's MF ring is much more usable than the 50 f/1.8's but is not nearly as nice as the 50 f/1.2's. Like the 50 f/1.8, the 50 f/1.4 extends up to 5/16" during focusing. My 50 f/1.4 exposes 1/3 stop brighter than the other two 50s (the other two being correct). The Canon EF 50mm f/1.4 USM Lens delivers excellent image quality for the price.
http://www.the-digital-picture.com/Reviews/Canon-EF-50mm-f-1.2-L-USM-Lens-Review.aspx
4. Cons: Relatively high street price Extreme border sharpness could be better at extreme apertures Possible focus shift when stopped down Manual focus ring a bit stiff.
http://www.lighthunter.com.au/2013/02/26/canon-ef-50mm-f1-2-l-usm-lens-review/#Sample_Gallery
5. 50/1.2 на 5Д - оценка 22, 50/1.4 - 20.
Sharpness 11P 11P
Transmission 1.4T 1.6Tstops
Distortion 0.4 0.5%
Vignetting -2.4 -2.1 ev
Chr. aberr 20 10mkm
http://www.dxomark.com/Lenses/Camera-Lens-Database/Canon/EF50mm-f-1.2L-USM/(camera)/176/(cameraname)/Canon-EOS-5D
Какие еще нужны доводы?..
