SG-Image

SG-Image AF 55mm F1.8

Name: SG-Image AF 55mm F1.8
Brand: SG-Image
SKU: sgimage-af-55mm-f18-full-frame-lens-x

$199 approx.

sg-image.com|May 9, 2026

Market price for reference only. Actual prices may vary significantly due to retailer, promotions, condition, and market dynamics — please do verify the exact price before purchasing.

SourceSG-Image official siteNot AI-generated

Optics

Focal Length	55mm
Equiv. Focal Length	83mm
Max Aperture	f/1.8
Min Aperture	f/16
Angle of View	42°
Aperture Blades	9
Lens Configuration	8 groups / 10 elements 5 HR

Build

Weight	365g
Dimensions	⌀69 × 78mm
Filter Size	58mm
Body Material	Metal

Autofocus

Autofocus	Yes
Min Focus Distance	50cm

Stabilization

OIS

Features

Weather Resistant	No
Aperture Ring	No

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Other lenses at this focal length

31 primes at 50–60mm

Lens	Aperture	Weight	Focus	WR	Price
This lensSG-ImageAF 55mm F1.8	f/1.8	365g	AF	No	$199 approx.
Compared with this lens
Meike · Neo55mm F1.4 Neo	f/1.4⅔ stop faster	288g77g lighter	AF	No	$200 approx.
Meike55mm F1.8 PRO STM	f/1.8Same	365gSame	AF	No	$330 approx.
Viltrox · AirAF 56mm F1.7 Air	f/1.7Same	171g194g lighter	AF	No	$180 approx.
Meike · Air56mm F1.7 Air	f/1.7Same	190g175g lighter	AF	No	$159 approx.
TTArtisanAF 56mm F1.8	f/1.8Same	233–245g126g lighter	AF	No	$129 approx.
Sigma · Contemporary56mm F1.4 DC DN \| Contemporary	f/1.4⅔ stop faster	280g85g lighter	AF	No	$484 approx.
ViltroxAF 56mm F1.4	f/1.4⅔ stop faster	290g75g lighter	AF	No	$239 approx.
Fujifilm · XFXF 56mm F1.2 R APD	f/1.21⅓ stops faster	405g40g heavier	AF	No	$1,500 approx.
Fujifilm · XFXF 56mm F1.2 R	f/1.21⅓ stops faster	405g40g heavier	AF	No	$1,000 approx.
Sirui · Sniper56mm F1.2	f/1.21⅓ stops faster	419g54g heavier	AF	No	$279 approx.
Fujifilm · XFXF 56mm F1.2 R WR	f/1.21⅓ stops faster	445g80g heavier	AF	Yes	$1,200 approx.
Viltrox · ProAF 56mm F1.2 Pro	f/1.21⅓ stops faster	575g210g heavier	AF	Partial	$580 approx.
Fujifilm · XFXF 60mm F2.4 R Macro	f/2.4⅔ stop slower	215g150g lighter	AF	No	$780 approx.
7ArtisansAF 50mm F1.8 LITE	f/1.8Same	178g187g lighter	AF	No	$125 approx.
Fujifilm · XFXF 50mm F2 R WR	f/2⅓ stop slower	200g165g lighter	AF	Yes	$500 approx.
Brightin StarAF 50mm F1.4	f/1.4⅔ stop faster	450g85g heavier	AF	No	$190 approx.
Fujifilm · XFXF 50mm F1.0 R WR	f/11⅔ stops faster	845g480g heavier	AF	Yes	$1,800 approx.
7ArtisansMF 55mm F1.4	f/1.4⅔ stop faster	272g93g lighter	MF	No	$76 approx.
7ArtisansMF 60mm F2.8 Macro	f/2.81⅓ stops slower	339gSimilar	MF	No	$159 approx.
Brightin Star60mm F2.8 Macro 2X II	f/2.81⅓ stops slower	660g295g heavier	MF	No	$230 approx.
Brightin Star60mm F2.8 Macro 2X	f/2.81⅓ stops slower	698g333g heavier	MF	No	Price N/A
7ArtisansMF 50mm F1.8	f/1.8Same	168g197g lighter	MF	No	$66 approx.
Brightin StarMF 50mm F1.8	f/1.8Same	227g138g lighter	MF	No	$70 approx.
SG-ImageMF 50mm F1.4	f/1.4⅔ stop faster	249g116g lighter	MF	No	$68 approx.
Voigtländer · NoktonNOKTON 50mm F1.2	f/1.21⅓ stops faster	290g75g lighter	MF	No	$709 approx.Used
Meike50mm F1.7	f/1.7Same	310g55g lighter	MF	No	$100 approx.
SG-ImageMF 50mm F1.8	f/1.8Same	311g54g lighter	MF	No	$192 approx.
TTArtisanAPS-C 50mm F1.2	f/1.21⅓ stops faster	336gSimilar	MF	No	$109 approx.
Brightin StarMF 50mm F1.4 III	f/1.4⅔ stop faster	395gSimilar	MF	No	$100 approx.
TTArtisanAPS-C 50mm F0.95	f/0.952 stops faster	411g46g heavier	MF	No	$218 approx.
Brightin StarMF 50mm F0.95	f/0.952 stops faster	443g78g heavier	MF	No	$200 approx.