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Canon EF 300mm f/2.8L IS USM versus Pentax smc DA Star 300mm F4 ED (IF) SDM

Scores and measurements are available only for tested lenses. For preview lenses, you can compare their specs.

Canon EF 300mm f/2.8L IS USM

DxOMark Score

Best at f=300mm & f/4[?]
17

Lens Metric Scores

Sharpness
[?]
15P-Mpix
Transmission
[?]
3.3TStop
Distortion
[?]
0%
Vignetting
[?]
-0.5EV
Chr. aberration
[?]
4µm
dxomark
Pentax smc DA Star 300mm F4 ED (IF) SDM

DxOMark Score

Best at f=300mm & f/4[?]
15

Lens Metric Scores

Sharpness
[?]
7P-Mpix
Transmission
[?]
4.4TStop
Distortion
[?]
0.1%
Vignetting
[?]
-0.5EV
Chr. aberration
[?]
6µm
dxomark
Canon EF 300mm f/2.8L IS USM
Announced1999-07-01 
Indicative price (USD) 6000 
Aperturef/2.8  
Focal range (mm) 300  
Filter diameter (mm) 52 
Max diameter (mm) 128 
Mount typeCanon EF  
StabilizationYes  
AF MotorUSM  
Zoom type/  
Rotating front elementNo  
Tripod mountYes  
ColorGrey  
Full-Time manual focusYes  
Number of lenses17  
Number of groups13  
Diaphragm blades8  
Circular apertureNo  
Length (mm)252  
Weight (gr)2550  

Certain fields may be left blank. They will be updated as soon as possible.
dxomark
Pentax smc DA Star 300mm F4 ED (IF) SDM
Announced2008-01-23 
Indicative price (USD) 1400 
Aperturef/4  
Focal range (mm) 300  
Filter diameter (mm) 77 
Max diameter (mm) 82 
Mount typePentax KAF  
StabilizationNo  
AF MotorSDM  
Zoom type  
Rotating front elementNo  
Tripod mountYes  
ColorBlack  
Full-Time manual focusYes  
Number of lenses8  
Number of groups6  
Diaphragm blades9  
Circular aperture  
Length (mm)184  
Weight (gr)1070  

Certain fields may be left blank. They will be updated as soon as possible.
dxomark

in P-Mpix
Focal: 300
 
Focal: 300
 
Aperture: 0
 
Aperture: 0
 

in EV

in EV
Focal: 300
 
Focal: 300
 
Aperture: 2.8 - 4 - 5.6 - 8 - 11 - 32
 
Aperture: 4 - 5.6 - 8 - 11 - 32
 

in micrometer