Sigma 30mm F1.4 EX DC A-mount lens review by QuietOC

reviewer#39919 date: Aug-12-2017
sharpness: 4
color: 4
build: 4
distortion: 4
flare control: 4
overall: 4
tested on:
  • film camera:Film camera
  • APS-C: 6MP6 MP; 10MP10 MP; 12MP12 MP; 14MP14 MP; 16MP16 MP; 20MP20 MP; 24MP24 MP
  • full frame: 12MP12 MP24MP24 MP36MP36 MP42MP42 MP
ownership:I own this lens
compared to:Canon EF 28mm F1.8 USM
Sigma 28 F1.8 HS & EX DG
Minolta MD & AF 28 F2
Sony FE 28 F2
Canon EF 28 F2.8 IS USM
Minolta/Sony AF 28 F2.8
Neewer 28 F2.8
Sigma 30 F1.4 DC DN C
Sigma 30 F2.8 DN Art
Sony DT 30 F2.8 Macro SAM
Neewer 32 F1.6
Zeiss Touit 32 F1.8
Neewer 35 F1.2
Fotasy 35 F1.6 APS-C & Mini
Kaxinda 35 F1.7
Minolta MD 35 F1.8
Sony E 35 F1.8 OSS
Tamron SP 35 F1.8 USD
Minolta AF 35 F2
Minolta MC 35 F2.8
Vivitar 35 F2.8
price paid:150 USD (used)
positive:Long focus throw
Stationary filter threads
Decent petal hood
Soft case
negative:CA
Barrel distortion
Inconsistent quality
Focus shift
Slow, noisy unit focus
Corner shading (less than 35 F1.8)
Octagonal aperture
Inaccurate focus distance encoder
Lacks Lens Compensation
Valued much higher than the DT 35 F1.8
comment:30 mm is a nice focal length on APS-C especially for smaller Canon sensors. Sigma has a couple of newer 30 mm F1.4 lenses one for SLRs and one for mirrorless which have better reviews. On Sony APS-C sensors these are roughly equivalent to a 45 mm F2 on full-frame. This lens is much bigger than the diminutive Minolta MD Rokkor 45mm F2, but much smaller than the Tamron SP 45mm F1.8. "MADE IN JAPAN"

My first copy was a factory refurbished lens sold by Adorama on eBay. It looked to be in mint condition with all the original packaging and accessories. The second copy was used from a large eBay seller. The hood on this copy didn't fit tightly. The third used copy from an individual is much better.

This lens is slightly larger and heavier than the older Sigma 28 F1.8 High-Speed or the Canon EF 28 F1.8 USM. It is much larger and heavier than the Sony DT 35 F1.8 SAM.

The simple unit focus design moves all the glass together inside a stationary outer barrel just like other cheap lenses. It only only moves a few mm from infinity to closest focus. The minimum focus distance is quite long.

The first copy definitely couldn't get very sharp wide-open. The images actually shift in one direction when focused which probably indicates some alignment issue. The second was much better and didn't show any odd shifting, but it was still difficult to find the ideal focus point. The image quality using lens would benefit from stopped down focusing.

It is performs similarly to the Sony DT 35mm F1.8 SAM, but without the first-party benefits of that lens. The corners are a bit better on the Sigma.

Close focusing is very limited compared to the DT 35 mm F1.8.

rating summary

lens image
  • total reviews: 50
  • sharpness: 4.61
  • color: 4.68
  • build: 4.52
  • distortion: 4.56
  • flare control: 4.52
  • overall: 4.58
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