Today, the product we are going to test is Canon’s RF mount portrait mirror, RF85mm F1.2 L USM DS. This lens has the same optical design as the RF85mm F1.2 tested before, but uses DS soft focus coating, so Has a softer out-of-focus flare effect. Let’s take a look at the actual test of this lens.
For this lens, the image quality performance is comparable to that of the RF85mm F1 .2 is the same, with very good image quality performance, the lens is very sharp when fully opened, but the addition of DS soft focus coating makes the out-of-focus spot of the lens not have a “hard contour” at a large aperture, but a very soft focus External shape.
For this lens, in addition to the size, weight, and price Besides being more expensive, there are few disadvantages. This can be said to be the king of portraits in Canon lenses.
One. Appearance design
For RF85mm F1.2 L USM DS. The design of this lens is almost the same as the normal version of RF85mm F1.2. The only difference is the addition of the DS lens logo on the lens.
The size and weight of this lens are still very exaggerated. The lens uses an 82mm filter diameter and weighs 1195g, but this lens itself is “short” And the “thick” design, the overall force is relatively even when paired with the EOS R body, and it is not too hard to carry. If it is paired with the EOS RP, it is estimated to be a bit top-heavy.
The coating level of this lens is very good, and it is the first One lens and the last lens have DS coating. DS coating is an evaporation coating technology independently developed by Canon, which can make the transmittance of the lens gradually decrease from the center to the periphery, playing the role of smoothing the outline of the blur.
The lens still uses a huge barrel-shaped hood. With the hood, the lens actually looks quite stout. However, the workmanship of the lens hood of this lens is very good, and the installation feel is also very good.
Second, picture quality performance
below Let’s take a look at the actual sharpness test of the DS version of Canon RF85mm F1.2, I suggest you click to view the big picture, you can see a clear comparison.
Judging from the actual image quality performance, this lens is in F1 .2 When fully opened, there is a very good picture quality performance. It can be said that it is close to the best picture quality when fully opened. However, you can see that due to the DS coating, the amount of light passing through the lens is reduced when the lens is fully opened. Starting from F2.8, the lens flux has returned to normal, and F2.8-8 can be said to be the best image quality range of the lens. At F16, the image quality at the center of the lens drops slightly.
In terms of edge image quality, the edge image quality is relatively poor when the lens is fully opened. Starting from F4, the edge image quality has entered a very ideal state. However, for the 85mm large aperture fixed focus, the sharpness of the center is the key, and the edge is actually not important.
三. Out-of-focus blur
The biggest highlight of this lens is the DS soft-focus coating. This coating is only effective at large apertures, so use this RF85mm F1. The correct posture for 2 is to use F1.2 aperture to take pictures.
As you can see, due to the existence of DS coating, the lens’ The out-of-focus light spot presents a soft “ball of light” shape, rather than a simple circular light spot. This must be achieved by means of soft focus coating, apodization filters, etc., and cannot be achieved by raising the aperture alone.
Of course, in addition to light spots, F1.2 itself has Excellent blur performance. So when shooting with this lens, even if there is no spot out of focus, the out of focus and blur of this lens are among the best in the current lens.
4. Vignetting, dispersion and flare
The vignetting performance of this lens is very good. When it is fully opened, there is a certain vignetting, but it is not serious. If you shrink to F2.8, the vignetting of the lens basically disappears.
The dispersion performance of the lens has brought us a surprise. In F1 .2 When fully opened, the dispersion of the lens is very slight and almost invisible. This is very surprising.
Finally, the lens flare. With the help of the new coating, the lens Glare control is good. However, it can be seen that as a medium telephoto, there will still be some slight ghosting and flare when facing backlight.
V. Summary and samples
This This lens is definitely a high-level portrait lens, worthy of the price of 22,000 yuan. The design of this lens is for the lens to be fully opened. When the F1.2 is fully opened, not only the sharpness is excellent, but also the dispersion is slight, and the vignetting is not too heavy.
DS coating brings a soft and beautiful out-of-focus spot control, but it also reduces the amount of light when it is fully opened. However, the DS coating is only effective when it is fully opened, so when using this lens, you should use the largest aperture to shoot.
Finally, let’s take a look at the real shots of this lens.
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