Pentax 55mm f/1.4 DA* SDM vs FA 77mm f/1.8

differences

Reasons to consider the Pentax 55mm f/1.4 DA* SDM

Has a silent focus motor

Pentax SDM

None

Focuses quickly and silently

Wider aperture

f/1.4

f/1.8

At its widest, the 55mm f/1.4 DA* SDM captures much more light, 0.7 f-stops

Slightly better wide angle

55 mm

77 mm

Around 30% better wide angle

Slightly more magnification

1:5.9 (0.2x)

1:7 (0.1x)

Take macro shots with subjects around 20% larger in your photo

Slightly cheaper

$796.95

$1,046.95

The best price we've seen is $250 cheaper (more than 20% less)

Learn more about
the Pentax 55mm f/1.4 DA* SDM

Reasons to consider the Pentax FA 77mm f/1.8

Slightly better telephoto

77 mm

55 mm

40% more reach, less perspective distortion

Learn more about
the Pentax FA 77mm f/1.8

similarities

Compared to lenses

Common Strengths

Common Weaknesses

Wide aperture

55mm f/1.4 DA* SDM:	f/1.4
FA 77mm f/1.8:	f/1.8

	Fixed focal length prime lenses
	Typically very sharp

	Poor zoom
	1x

Compared to low light lenses

Common Strengths

Common Weaknesses

	Auto focus
	Easier to use

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Pentax SMC DA 70mm f/2.4

Low light lens

$697

Has a narrower aperture

Compare the SMC DA 70mm f/2.4 vs the SMC 55mm f/1.4 DA* SDM

Compare the SMC DA 70mm f/2.4 vs the SMC FA 77mm f/1.8

Canon EF 85mm f/1.2L II USM

Low light lens

$1,999

Is heavier

Compare the EF 85mm f/1.2L II USM vs the SMC 55mm f/1.4 DA* SDM

Compare the EF 85mm f/1.2L II USM vs the SMC FA 77mm f/1.8

Pentax SMC FA 43mm f/1.9

Low light lens

$747

Compare the SMC FA 43mm f/1.9 vs the SMC 55mm f/1.4 DA* SDM

Compare the SMC FA 43mm f/1.9 vs the SMC FA 77mm f/1.8

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

Sports lens

$1,397

Has slightly large zoom range

Has a narrower aperture

Is longer

Compare the SMC DA* 50-135mm f/2.8 ED SDM vs the SMC 55mm f/1.4 DA* SDM

Compare the SMC DA* 50-135mm f/2.8 ED SDM vs the SMC FA 77mm f/1.8

Sigma 70mm f/2.8 EX DG Macro

Macro lens

$449

Has better macro

Has a narrower aperture

Compare the 70mm f/2.8 EX DG Macro vs the SMC 55mm f/1.4 DA* SDM

Compare the 70mm f/2.8 EX DG Macro vs the SMC FA 77mm f/1.8

Pentax SMC FA 31mm f/1.8

Low light lens

$1,297

Compare the SMC FA 31mm f/1.8 vs the SMC 55mm f/1.4 DA* SDM

Compare the SMC FA 31mm f/1.8 vs the SMC FA 77mm f/1.8

Pentax SMC DA 55-300mm f/4-5.8 ED

Wildlife lens

$397

Has a significantly shorter telephoto lens

Has significantly large zoom range

Has a narrower aperture

Is longer

Compare the SMC DA 55-300mm f/4-5.8 ED vs the SMC 55mm f/1.4 DA* SDM

Compare the SMC DA 55-300mm f/4-5.8 ED vs the SMC FA 77mm f/1.8

Pentax SMC FA 50mm f/1.4

Low light lens

$447

Slightly cheaper

Slightly lighter

Doesn't have a silent focus motor

Slightly less magnification

Compare the SMC FA 50mm f/1.4 vs the SMC 55mm f/1.4 DA* SDM

Canon EF 50mm f/1.2L USM

Low light lens

$1,439

Slightly wider aperture

Slightly more expensive

Slightly heavier

Compare the EF 50mm f/1.2L USM vs the SMC 55mm f/1.4 DA* SDM

Sigma 28mm f/1.8 EX DG DF Macro Pentax-k

Low light lens

$349

More magnification

Slightly better wide angle

Doesn't have a silent focus motor

Narrower aperture

Compare the 28mm f/1.8 EX DG DF Macro Pentax-k vs the SMC 55mm f/1.4 DA* SDM

Pentax SMC D FA 50mm f/2.8 Macro

Macro lens

$597

Much more magnification

Doesn't have a silent focus motor

Significantly narrower aperture

Compare the SMC D FA 50mm f/2.8 Macro vs the SMC 55mm f/1.4 DA* SDM

Sigma 50mm f/1.4 EX DG HSM Pentax-k

Low light lens

$499

Slightly cheaper

Slightly less magnification

Slightly heavier

Compare the 50mm f/1.4 EX DG HSM Pentax-k vs the SMC 55mm f/1.4 DA* SDM

Nikon Nikkor AF-S 85mm f/1.4G

Low light lens

$1,629

Has a silent focus motor

Wider aperture

Heavier

Slightly more expensive

Compare the Nikkor AF-S 85mm f/1.4G vs the SMC FA 77mm f/1.8

Sigma 85mm f/1.4 EX DG HSM Pentax-k

Sports lens

$899

Has a silent focus motor

Wider aperture

Slightly less magnification

Compare the 85mm f/1.4 EX DG HSM Pentax-k vs the SMC FA 77mm f/1.8

Canon 85mm f/1.8 USM

Low light lens

$370

Has a silent focus motor

Slightly cheaper

Slightly larger diameter

Slightly heavier

Compare the 85mm f/1.8 USM vs the SMC FA 77mm f/1.8

Tamron 28-200mm f/3.8-5.6 XR Di Pentax-k

Wildlife lens

$270

Much more zoom

Better telephoto

Is a zoom lens

Significantly narrower aperture

Compare the 28-200mm f/3.8-5.6 XR Di Pentax-k vs the SMC FA 77mm f/1.8

discussion Which do you think is better?

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Pentax SMC
55mm f/1.4 DA SDM*
vs
Pentax SMC
FA 77mm f/1.8

differences

Reasons to consider the Pentax 55mm f/1.4 DA* SDM

Reasons to consider the Pentax FA 77mm f/1.8