Sigma 40mm F1.4 DG HSM Art For SONY SE Fit Black 332965

Product Information

Bokeh is a word used for the out-of-focus areas of a photograph, and is usually described in qualitative terms, such as smooth / creamy / harsh etc. In theSigma 40mm F1.4 DG HSM lens, Sigma have employed an iris diaphragm with nine rounded blades, which has resulted in very nice bokeh in our view. We do realise, however, that bokeh evaluation is subjective, so we've included several examples below. A subject measuring approximately 7.3 x 4.9" (185 x 123mm) fills a full-frame imaging sensor at this lens's minimum MF distance.

For portraiture it isn’t so important how flat the field is, it is more interesting to see what the sharpness is like when focused at different parts of the frame to take field curvature out of the equation. Except for a small number of specialty lenses, the wide aperture bokeh in the frame's corner does not produce round defocused highlights, with these effects taking on a cat's eye shape due to a form of mechanical vignetting. Lateral (or transverse) CA (Chromatic Aberration) refers to the unequal magnification of all colors in the spectrum.

Introduction

The design of this lens, featuring 3 aspherical lenses and 1 SLD glass element, is illustrated above. The focal length, maximim aperture and filter thread size (82mm) are all printed on the barrel just behind the focus distance window Beyond Art Especially ultra-wide aperture lenses are expected to show strong peripheral shading wide at the widest aperture settings when used on a camera that utilizes its entire image circle. crops from center, A7rII, because of focus shift (see corresponding section) I refocused for every shot The only real downsides are flare resistance and even more noticeably size and weight. For some this will surely be a reason to stay away from this lens, while for others this won’t be an issue at all.

I don’t want the substance of this review to get lost in hyperbole or vain platitudes, but in some way, this Sigma 40mm f/1.4 lens really does operate at a whole other level in terms of sharpness. I’ve used sharp lenses before, but nothing quite like this – especially when shooting wide open.Sigma offers the AF 35mm 1.4 DG HSM Art for a relatively low price of 750 EUR / 900 USD. It’s an optical design from 2012 for DSLRs which is also available in E-mount since 2018. See my Sigma 35mm f1.4 Art review where it came Highly Recommended when tested on a 36MP Nikon D800. At 755g for E-mount and 665g for F-mount the lens it’s much lighter than Sigma’s 40mm f1.4 Art. Distortion is very low, Lightroom also has a profile included to correct it. Bokeh Sony A7rII | Sigma 40mm 1.4 Art | f/1.4 Uses for this angle of view coincide with most uses of the 50mm focal length, with modestly tighter framing or modestly longer perspective for the same framing being the difference. Allowing more light to reach the sensor permits freezing action, handholding the camera in lower light levels, and using a lower (less noisy) ISO setting.