Samyang AF 85mm F1.4 Weather Sealed High Speed Auto Focus Lens for Canon EOS R Cameras - RF Mount (SYIO85AF-RF)

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The lens in itself is made for short flange distance, it is based on the E-mount version and it is a rather good lens actually.

In the real world, lens defects do not exist in isolation, with spherical aberration and spherochromatism generally found, at least to some degree, along with axial CA.Some sports, such as basketball and volleyball, can be captured with an 85mm lens, and thanks to the wide aperture, this lens can stop the action in very poorly-lit venues, including gymnasiums. Essentially the 24-105 will be general purpose. The 28-70 would be some thing I would exclusively take out at night, or perhaps even on trips where it and the 70-200 would be all I need to take with me, and not bother with much lens swaps, as the 28-70 or primes. Allowing more light to reach the sensor permits freezing action, handholding the camera in lower light levels, and the use of a lower (less noisy) ISO setting. The optical performance of this lens, coupled with the relatively low price and high utility, makes it a strong value.

The Samyang AF 85mm F1.4 RF (also known as the Rokinon AF 85mm F1.4 RF in the USA) is a very fast short telephoto (portrait) prime lens for full-frame Canon R-series mirrorless cameras. RF Mount AF Auto Focus Weather Sealing Ultra Multi-Coating Linear Super sonic Motor Beautiful Bokeh 9 Aperture Blades HR Lens ED F1.4 Due to the infinite number of variables present among all available scenes, assessing the bokeh quality is considerably more challenging. Therefore, the IBIS viewfinder image is very nicely stabilized, and sensor-based AF takes advantage of the stabilized view for improved accuracy. APS-C format cameras using lenses projecting a full-frame-sized image circle avoid most vignetting problems.

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With the right lens profile and software, lateral CA is often easily correctable by radially shifting the colors to coincide. Above: Taking a closer look though reveals a problem with my old 85 1.8 with noticeably softer details that look blurred compared to the much crisper RF models. I retook this shot multiple times but failed to get an improvement when using the R5’s face and eye detect autofocus.