Canon rf 35mm8/1/2023 Still, for this kind of money it's a bit disappointing not to have a hood included. the distance from the front of the lens to the subject – of 7cm.Ī hood isn’t provided with the lens as standard, and that may well be explained by the likelihood of the average user needing or wanting to use it with such an optic. The diaphragm is made up of nine blades, which bodes well for round bokeh, while the minimum focusing distance of 17cm gives a minimum working distance – i.e. A diagram of the optical construction also shows that the aperture diaphragm is positioned relatively close towards the front of the lens, which is said to be one reason why the lens can offer such a wide aperture without compromising on size. Canon claims that this is one of the key reasons for the high corner-to-corner sharpness, even when the lens is used wide open. The rearmost element sits very close to the back of the lens itself and is the largest in the array. Whereas the older optic (designed for DSLRs) has a large front element and a small rear element, the RF 35mm F1.8 (designed for mirrorless) has a small front element and a large rear element.Ĭanon has pointed out how the RF mount’s width and the short flange back distance gives new freedom to lens designers, and the optical design here – or, more specifically, the way in which this differs from existing designs in similar lenses – appears to back that up. The optical design of the RF 35mm F1.8 Macro is similar to the older EF 35mm F2, but flipped. With the lens mounted on either the EOS R or EOS RP, you have access to Canon’s full suite of aberration-rectifying options that deal with vignetting, lateral chromatic aberration, distortion and diffraction, in addition to the Digital Lens Optimizer that aims to counter the softening effects from diffraction, among other things. This includes a single glass moulded aspherical element within the focusing group in the middle of the formula, which is in place both to combat spherical aberration and also to keep image quality consistent over focusing distances. The lens has a new formula that sees 11 elements arranged in nine groups.
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