differences

Reasons to consider the Pentax DA* 50-135mm f/2.8 ED SDM

Much narrower aperture f/22 vs f/5.6
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At its narrowest, the DA* 50-135mm f/2.8 ED SDM goes 3.9 f-stops narrower
Has a constant aperture Yes vs No
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Constant aperture lenses offer the same maximum aperture at all focal lengths
Wider aperture f/2.8 vs f/4
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At its widest, the DA* 50-135mm f/2.8 ED SDM captures slightly more light (1 f-stop)
Pentax SMC  DA* 50-135mm f/2.8 ED SDM Learn more about
the Pentax DA* 50-135mm f/2.8 ED SDM

Reasons to consider the Olympus 40-150mm f/4-5.6 ED

Shorter 72 mm vs 137 mm
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Around 50% shorter
Lighter 220 g vs 0.7 kg
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3.1x lighter
Smaller diameter 66 mm vs 76 mm
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More than 10% smaller lens at the end
More zoom 3.8x vs 2.7x
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Around 40% more zoom, giving you more flexibility for photos
Slightly cheaper $454.75 vs $739.99
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The best price we've seen is $285 cheaper (around 40% less)
Slightly better telephoto 150 mm vs 135 mm
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More than 10% more reach, less perspective distortion
Slightly better wide angle 40 mm vs 50 mm
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20% better wide angle
Olympus Zuiko 40-150mm f/4-5.6 ED Learn more about
the Olympus 40-150mm f/4-5.6 ED

similarities

Compared to digital camera lenses

Common Strengths Common Weaknesses
Auto focus Auto focus Help
Easier to use
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses

Compared to digital camera lenses

Common Strengths Common Weaknesses
Min focal length Good wide-angle Help
DA* 50-135mm f/2.8 ED SDM50 mm
40-150mm f/4-5.6 ED40 mm
Diameter Small diameters Help
DA* 50-135mm f/2.8 ED SDM76 mm
40-150mm f/4-5.6 ED66 mm
Weight Light weight Help
DA* 50-135mm f/2.8 ED SDM0.7 kg
40-150mm f/4-5.6 ED220 g
Image stabilization No image stabilization Help
Risk of blur
Max focal length Poor telephoto Help
DA* 50-135mm f/2.8 ED SDM135 mm
40-150mm f/4-5.6 ED150 mm

competitors

Olympus Zuiko 40-150mm f/4-5.6 ED Competitors

Panasonic Lumix G Vario 45-200mm f/4-5.6 MEGA O.I.S.

Panasonic Lumix G Vario 45-200mm f/4-5.6 MEGA O.I.S.

Wildlife lens

$40 - $448

Image stabilization Image stabilization
Max focal length Better telephoto
Length Longer
Panasonic Lumix G Vario  45-150mm f/4-5.6

Panasonic Lumix G Vario 45-150mm f/4-5.6

Wildlife lens

$148 - $180

Wide minimum Much narrower aperture
Lowest price Slightly cheaper
Zoom range Slightly less zoom
Fujifilm XF 55-200mm f/3.5-4.8 R LM O.I.S.

Fujifilm XF 55-200mm f/3.5-4.8 R LM O.I.S.

Portrait lens

Aperture Wider aperture
Max focal length Better telephoto
Length Longer

Pentax SMC DA* 50-135mm f/2.8 ED SDM Competitors

discussion Which do you think is better?

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