The Holding Tank

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MTF Study

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135mm Region

| Average MTF | Worst Case MTF | Relative MTF | S to M Ratio |

 | Figure of Merit  | MTF Area Average | Conclusions |

 

Conclusion

 

f8

Here the 135mm f2.8 is worse than the 70-200mm f2.8 zoom, but 100mm f2.8 macro is better with the 135mm f2L winning hands down.  

The 135mm softfocus and the 70-200mm zoom are close in performance with the prime probably winning in detail.

On a 1.6X crop factor camera the softfocus and macro lenses will provide 100% superior performance over 100% of the frame.

The 100mm macro does well compared to the expensive 135mm f2L, however the big 135mm prime provides superior quality over 100% of the frame in terms of contrast and detail.

Only the 70-200mm zooms can not provide superior performance over 100% of the 1.6X crop factor frame.

See simulations of the expected real world image sharpness for the 85-135mm range of focal lengths in my lens simulation page.

Max Ap

All the lenses are very close with the 135mm f2 leading the performance for both contrast and detail.

There is very little to differentiate Bokeh.  

MTF Study

| Lens MTF Area Summary and Figure of Merit |

| MTF Data Overview | Photodo / Canon MTF Cross Validation | 

| Contax, Nikkor and Leica R lenses vs Canon | 

| List of Canon Data Comparisons | List of Photodo Data Comparisons |

| Database Download |

| Average MTF | Worst Case MTF | Relative MTF | S to M Ratio |

 | Figure of Merit  | MTF Area Average | Conclusions |

Last Updated 05/06/2008

All Content © 2005-09 Lester Wareham All Rights Reserved     

All material is supplied  as is and without warranty, use at your own risk.  

All opinions stated are the authors own.

All quoted information remains the copyright of the respective authors.

Any trade marks mentioned are the property of their owners.

  

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