Sigma 8mm f/3.5 EX DG Circular vs Panasonic 20mm f/1.7 G

differences

Reasons to consider the Sigma 8mm f/3.5 EX DG Circular

Fisheye lens

Yes

Fisheye lenses take extremely wide 'circular' looking images

Narrower aperture

f/22

f/16

At its narrowest, the 8mm f/3.5 EX DG Circular goes 0.9 f-stops narrower

More magnification

1:4.6 (0.2x)

1:7.7 (0.1x)

Take macro shots with subjects around 70% larger in your photo

Slightly better wide angle

8 mm

20 mm

2.5x better wide angle

Learn more about
the Sigma 8mm f/3.5 EX DG Circular

Reasons to consider the Panasonic 20mm f/1.7 G

Significantly wider aperture

f/1.7

f/3.5

At its widest, the 20mm f/1.7 G captures much more light, 2.1 f-stops

Shorter

26 mm

68 mm

2.6x shorter

Slightly lighter

100 g

400 g

4x lighter

Slightly cheaper

$348.00

$899.00

The best price we've seen is $551 cheaper (2.6x less)

Learn more about
the Panasonic 20mm f/1.7 G

similarities

Compared to lenses

Common Strengths

Common Weaknesses

	Fixed focal length prime lenses
	Typically very sharp

Short

8mm f/3.5 EX DG Circular:	68 mm
20mm f/1.7 G:	26 mm

Poor telephoto

8mm f/3.5 EX DG Circular:	8 mm
20mm f/1.7 G:	20 mm

	No silent focus motor
	Louder and slower

	Poor zoom
	1x

competitors

Olympus M.Zuiko 17mm f/2.8

Lens

$299

Has a narrower aperture

Compare the M.Zuiko 17mm f/2.8 vs the 8mm f/3.5 EX DG Circular

Compare the M.Zuiko 17mm f/2.8 vs the Lumix 20mm f/1.7 G

Olympus Zuiko M. ED 12mm f/2

Low light lens

$799

Compare the Zuiko M. ED 12mm f/2 vs the 8mm f/3.5 EX DG Circular

Compare the Zuiko M. ED 12mm f/2 vs the Lumix 20mm f/1.7 G

Rokinon 8mm f/3.5 Canon-ef

Fisheye lens

$269

Slightly cheaper

Auto focus

Compare the 8mm f/3.5 Canon-ef vs the 8mm f/3.5 EX DG Circular

Zeiss CP.2 18mm/T3.6 Canon-ef

Wide angle lens

$3,900

Not a fisheye

Auto focus

Compare the CP.2 18mm/T3.6 Canon-ef vs the 8mm f/3.5 EX DG Circular

Zeiss Distagon T 18mm f/3.5 ZE Canon-ef*

Wide angle lens

$1,395

Not a fisheye

Auto focus

Compare the Distagon T* 18mm f/3.5 ZE Canon-ef vs the 8mm f/3.5 EX DG Circular

Pentax SMC FA 43mm f/1.9

Low light lens

$747

Significantly wider aperture

Shorter

Not a fisheye

Less magnification

Compare the SMC FA 43mm f/1.9 vs the 8mm f/3.5 EX DG Circular

Zeiss Planar T 50mm f/1.4 ZF.2 Nikon-f*

Low light lens

$725

Much wider aperture

Slightly better telephoto

Not a fisheye

Auto focus

Compare the Planar T* 50mm f/1.4 ZF.2 Nikon-f vs the 8mm f/3.5 EX DG Circular

Panasonic 25mm f/1.4 Leica D

Low light lens

$900

Slightly wider aperture

Longer

Heavier

Compare the 25mm f/1.4 Leica D vs the Lumix 20mm f/1.7 G

Panasonic Lumix G 14mm f/2.5

Low light lens

$325

Narrower aperture

Slightly less magnification

Compare the Lumix G 14mm f/2.5 vs the Lumix 20mm f/1.7 G

Olympus Zuiko M. ED 45mm f/1.8

Low light lens

$399

Slightly better telephoto

Slightly worse wide angle

Compare the Zuiko M. ED 45mm f/1.8 vs the Lumix 20mm f/1.7 G

Sigma 30mm f/2.8 EX DN

Lens

$149

Narrower aperture

Compare the 30mm f/2.8 EX DN vs the Lumix 20mm f/1.7 G

Olympus Zuiko 25mm f/2.8 ED

Lens

$249

Narrower aperture

Slightly more magnification

Narrower aperture

Compare the Zuiko 25mm f/2.8 ED vs the Lumix 20mm f/1.7 G

discussion Which do you think is better?

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Sigma
8mm f/3.5 EX DG Circular
vs
Panasonic Lumix
20mm f/1.7 G

differences

Reasons to consider the Sigma 8mm f/3.5 EX DG Circular

Reasons to consider the Panasonic 20mm f/1.7 G