differences

Reasons to consider the Samyang 8mm f/2.8 Fish-eye

Smaller diameter 60 mm vs 75 mm
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20% smaller lens at the end
Wider aperture f/2.8 vs f/3.5
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At its widest, the 8mm f/2.8 Fish-eye captures slightly more light (0.6 f-stops)
Shorter 56 mm vs 102 mm
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Around 50% shorter
Slightly lighter 217 g vs 450 g
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2.1x lighter
Samyang 8mm f/2.8 Fish-eye Learn more about
the Samyang 8mm f/2.8 Fish-eye

Reasons to consider the Rokinon 8mm f/3.5 UMC Fish-Eye CS II

Fisheye lens Yes vs No
Help
Fisheye lenses take extremely wide 'circular' looking images
Rokinon 8mm f/3.5 UMC Fish-Eye CS II Learn more about
the Rokinon 8mm f/3.5 UMC Fish-Eye CS II

similarities

Compared to digital camera lenses

Common Strengths Common Weaknesses
Prime lens Fixed focal length prime lenses Help
Typically very sharp
Min focal length Good wide-angle Help
8 mm
Auto focus Auto focus Help
Focus yourself
Max focal length Poor telephoto Help
8 mm

competitors

Samyang 8mm f/2.8 Fish-eye Competitors

Pentax SMC  DA 10-17mm f/3.5-4.5 ED

Pentax SMC DA 10-17mm f/3.5-4.5 ED

Fisheye lens

$360 - $379

Fisheye Fisheye lens
Auto focus Auto focus
Prime lens Is a zoom lens
Canon EF-S 10-18mm f/4.5-5.6 IS STM

Canon EF-S 10-18mm f/4.5-5.6 IS STM

Wide angle lens

$233 - $269

Image stabilization Image stabilization
Auto focus Auto focus
Prime lens Is a zoom lens
Rokinon 8mm f/2.8 UMC Fish-Eye

Rokinon 8mm f/2.8 UMC Fish-Eye

Lens

$249

Rokinon 8mm f/3.5 UMC Fish-Eye CS II Competitors

Sigma 8mm f/3.5 EX DG Circular Canon EF

Sigma 8mm f/3.5 EX DG Circular Canon EF

Fisheye lens

$894

Auto focus Auto focus
Length Shorter
Lowest price More expensive
Rokinon 7.5mm f/3.5

Rokinon 7.5mm f/3.5

Fisheye lens

Length Shorter
Diameter Smaller diameter

discussion Which do you think is better?

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