8/5/2023 0 Comments Sigma 30mm 1.4 focus issuesThe finish is attractive and the lens looks professional and solidly built. While shooting MF, I haven't found it to be an issue, though I do notice it. Well worth the price I paid, but I'm sure the Art lens outperforms this.Ĭonstruction quality is excellent all over, except for the minor bug of the focus ring having just a tiny bit of play in it. There is also minor barrel distortion, but there is a camera raw correction profile that works well. There is some noticeable CA/fringing in my copy but it's easily removed in post. If you stop down a stop or two it goes away anyway. I did notice what others have said about the corners being "soft", however the softness is so slight that I wouldn't even subtract points for it. There are few options to get this aspect for APS-C, and virtually none that are f/1.4. This produces a very close to "normal" view equivalent to 45mm full frame. I was torn between this lens and the newer Art lens, but I found this new in box for less than half of the new version, and I couldn't justify the extra dough so I got this one.įirst, this lens fills an important empty spot in my APS-C range of prime lenses. Slight play in focus ring when manual focusingĬA is on the low side of average for my copy of the lens, but easily fixed in post. Close focusing is very limited compared to the DT 35 mm F1.8. The corners are a bit better on the Sigma. It is performs similarly to the Sony DT 35mm F1.8 SAM, but without the first-party benefits of that lens. The image quality would benefit from stopped down focusing. The second was much better and didn't show any odd shifting, but it was still difficult to find the ideal focus point. The images actually shift in one direction when focused which probably indicates some alignment issue. The first copy definitely couldn't get very sharp wide-open. The minimum focus distance is quite long. It only only moves a few mm from infinity to closest focus. The simple unit focus design moves all the glass together inside a stationary outer barrel just like other simple primes. The third used copy from an individual is much better. The hood on this copy didn't fit tightly. The second copy was used from a large eBay seller. It looked to be in mint condition with all the original packaging and accessories. My first copy was a factory refurbished lens sold by Adorama on eBay. It is also much larger and heavier than the Sony DT 35 F1.8 SAM. It is slightly larger and heavier than the older Sigma 28 F1.8 High-Speed or the Canon EF 28 F1.8 USM. This lens is much bigger than the diminutive Minolta MD Rokkor 45mm F2, but much smaller than the Tamron SP 45mm F1.8. On Sony APS-C sensors these are roughly equivalent to a 45 mm F2 on full-frame. Sigma has a couple of newer 30 mm F1.4 lenses one for SLRs and one for mirrorless which have better reviews.
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