Sigma 30mm 1: 1.4 belongs to the professional EX series by the manufacturer.
Lens markings from the manufacturer Sigma
|APO||apochromatic||Abbreviation indicates chromatic aberration has been corrected in the lens.|
|DC||For cameras with a cropped sensor|
|DG||Lens for full-frame cameras|
|DN||Lens for mirrorless cameras|
|EX||"EX Series" professional series with balanced performance|
|HSM||Hyper sonic motor||Sigma ultrasonic motor|
|OS||optical stabilizer||Optical stabilizer|
|Sports||Sports Series Lens|
Sigma 30mm 1: 1.4 small, heavy. Large aperture, not the most artistic hips... Equipped with a ring drive, HSM (similar to Canon's USM). Infinity comes from 3 meters, so it seems that the window indicating the focusing range has only a decorative function. Refers to moderate wide angle lenses. In terms of its dimensions and appearance, it is similar to Canon 50 1.4... However, it is larger and heavier than it.
The Sigma 30mm 1: 1.4 focuses quickly. You can bring autofocus manually (to tears (:) after receiving confirmation from the camera. If you do this earlier, the lens will yaw, resisting the manual rotation of the AF ring. AF switch is tight. The focus ring rotates around its axis, with a fairly large, I believe, effort . Feeling on the verge of the ring sitting very tightly on the body. Diameter of mount for light filters - 62 millimeters (expensive-rich). Hiding the front lens under the filter, focusing у lens becomes internal. The Sigma 30mm 1: 1.4 package includes a case and a hood.
Moreover, the cover can be put on a belt and carried with you. This lens is available with virtually all modern camera mounts. An updated version of this model comes with the Art index, its release began at the end of 2013. Externally, the lens looks nice. The plastic is matte, but easily soiled, the rubberized surface collects dust. There is a persistent feeling that the lens will lose its body blackening of plastic rather quickly during operation.
On an open aperture, it tends to give purple halos around contrasting transitions (despite the low dispersion elements in the scheme), there is also distortion. Not much, but there is. Camera automation goes a little crazy when this lens is put on - in aperture priority mode, exposure compensation must be done, otherwise overexposure appears.
In principle, there are no complaints about the rest. Swearing appears when we start shooting the starry sky - it's hard to catch infinity in the dark.
Sigma 30mm 1: 1.4 color rendition is normal, sometimes color distortions come out during post-processing. The contrast is high, I would say, very much. The focusing ring has no stopper, but it can be rotated with little effort. Focuses quickly, on open with it, the camera does not always get into focus. The sharpness is not bad throughout the entire frame, but from the aperture 2. At 2,8 it is generally excellent. And the further the better. Quite sharp at f4, 5,6-8 excellent across the frame.
The diaphragm is low-noise, the bokeh due to the moderately wide angle is not entirely artistic.
Sample photos on Sigma 30mm 1: 1.4
Shot with Canon crop.
Overall, a very good medium-wide fixed focal length lens. On crop 1.6 it has an EGF of 48mm, which makes it very versatile in everyday use. In case you have a full frame camera, the lens can be used on it if you are willing to put up with the constant vignette at the corners. This lens belongs to the professional series by the manufacturer, however, according to the results of the test, I realized that it did not suit me. The impression was that the "professionalism" of this glass lies in the presence of a metal bayonet ring. Too many "but":
- With a strange demeanor of the exposure meter with it, under conditions of insufficient / excessive lighting
- With the general impression of the EGF at crop, since the lens will be 30mm f1.4 only on the full-frame matrix, at 1,6 it is a 48mm f / 2.2 lens
- Not a particularly clear decision to abandon internal focusing and make a mini-moving trunk of this kind, with the same mini-slit, hospitably opening access to the interior for dust.
- Probably my most controversial purchase of all more or less modern lenses.
UPD 2021: However, times have passed, I kind of learned how to shoot and process. Now, I want to find this lens again and compare the results of the day then and today.
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