Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k vs Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

differences

Reasons to consider the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Much narrower aperture

f/22

f/5.6

At its narrowest, the 70-300mm f/4-5.6 Di LD Macro Pentax-k goes 3.9 f-stops narrower

More magnification

1:2 (0.5x)

1:4.5 (0.2x)

Take macro shots with subjects around 2.5x larger in your photo

Better telephoto

300 mm

200 mm

50% more reach, less perspective distortion

Learn more about
the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Reasons to consider the Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

Has a silent focus motor

Sigma HSM

None

Focuses quickly and silently

Image stabilization

Sigma OS

None

Helps eliminate blur caused by small camera movements

Slightly better wide angle

50 mm

70 mm

Around 30% better wide angle

Slightly shorter

102 mm

117 mm

More than 10% shorter

Learn more about
the Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

similarities

Compared to lenses

Common Strengths

Common Weaknesses

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

	Both are zoom lenses
	Typically not as sharp as prime lenses

	Very narrow widest aperture size
	f/4

	Both are variable aperture lenses
	Narrower aperture at longer focal lengths

Compared to wildlife lenses

Common Strengths

Common Weaknesses

Inexpensive

70-300mm f/4-5.6 Di LD Macro Pentax-k:	$164.95
50-200mm f/4-5.6 DC OS HSM Pentax-k:	$159.00

Short

70-300mm f/4-5.6 Di LD Macro Pentax-k:	117 mm
50-200mm f/4-5.6 DC OS HSM Pentax-k:	102 mm

Good wide-angle

70-300mm f/4-5.6 Di LD Macro Pentax-k:	70 mm
50-200mm f/4-5.6 DC OS HSM Pentax-k:	50 mm

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

competitors

Pentax SMC DA 50-200mm f/4-5.6 ED WR

Wildlife lens

$197

Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k

Macro lens

$209

Compare the 70-300mm f/4-5.6 APO DG Macro Pentax-k vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the 70-300mm f/4-5.6 APO DG Macro Pentax-k vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

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

Wildlife lens

$397

Compare the SMC DA 55-300mm f/4-5.8 ED vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the SMC DA 55-300mm f/4-5.8 ED vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Tamron SP 90mm f/2.8 Di Macro Pentax-k

Macro lens

$460

Has a wider aperture

Has a higher max f/stop

Has a slightly longer telephoto lens

Has significantly smaller zoom range

Compare the SP 90mm f/2.8 Di Macro Pentax-k vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the SP 90mm f/2.8 Di Macro Pentax-k vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 70-300mm f/4-5.6 DG OS Pentax-k

Wildlife lens

$399

Compare the 70-300mm f/4-5.6 DG OS Pentax-k vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the 70-300mm f/4-5.6 DG OS Pentax-k vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

Travel lens

$479

Has way more large zoom range

Compare the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 70-300mm f/4-5.6 APO DG Macro

Macro lens

$199

Compare the 70-300mm f/4-5.6 APO DG Macro vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Compare the 70-300mm f/4-5.6 APO DG Macro vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Tamron SP 70-300mm f/4-5.6 Di VC USD Nikon-f

Wildlife lens

$449

Image stabilization

Has a silent focus motor

Slightly heavier

Slightly more expensive

Compare the SP 70-300mm f/4-5.6 Di VC USD Nikon-f vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Tamron 70-200mm f/2.8 Di LD Macro Pentax-k

Sports lens

$729

Has a consant aperture

Significantly narrower aperture

Longer

Worse telephoto

Compare the 70-200mm f/2.8 Di LD Macro Pentax-k vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Olympus M.Zuiko 40-150mm f/4-5.6

Wildlife lens

$300

Shorter

Slightly better wide angle

Significantly less magnification

Worse telephoto

Compare the M.Zuiko 40-150mm f/4-5.6 vs the 70-300mm f/4-5.6 Di LD Macro Pentax-k

Sigma 70-200mm f/2.8 II EX DG APO Macro HSM Pentax-k

Sports lens

$799

Much narrower aperture

Has a consant aperture

No image stabilization

Longer

Compare the 70-200mm f/2.8 II EX DG APO Macro HSM Pentax-k vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Tamron 55-200mm f/4-5.6 Di-II LD Sony-alpha

Wildlife lens

$199

Much narrower aperture

Slightly more magnification

Doesn't have a silent focus motor

No image stabilization

Compare the 55-200mm f/4-5.6 Di-II LD Sony-alpha vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sony 2 55-200mm f/4-5.6 DT

Wildlife lens

$200

Much narrower aperture

Slightly more magnification

Doesn't have a silent focus motor

No image stabilization

Compare the 2 55-200mm f/4-5.6 DT vs the 50-200mm f/4-5.6 DC OS HSM Pentax-k

discussion Which do you think is better?

Speech is free, but discussion at LensHero is moderated! Please discuss your opinion of these lenses here, and discuss feedback for LensHero at our support community.

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Tamron
70-300mm f/4-5.6 Di LD Macro Pentax-k
vs
Sigma
50-200mm f/4-5.6 DC OS HSM Pentax-k

differences

Reasons to consider the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Reasons to consider the Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k