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Forums > Back > next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART
Brightcolours
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06-16-2017, 09:28 AM (This post was last modified: 06-16-2017, 09:33 AM by Brightcolours.)
Quote:So do we have to calculate strict equivalence for each and every of those formats before we can go shooting - lest we end up with a forbidden equivalent unit? Big Grin
Yours has a crop factor (compared to 135 format) of 1.290x. Now you know why everything always turned out wider than you anticipated!

 

On a more serious note, the Sigma Quattro H has a crop factor of 1.353x, yet most of the times just gets called "1.3x crop" or "APS-H like Canon's 1D series". In this case, it is handy to know that the difference can be noticable.

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Messages In This Thread
next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART - by davidmanze - 06-16-2017, 07:36 AM
next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART - by davidmanze - 06-16-2017, 08:26 AM
next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART - by Brightcolours - 06-16-2017, 09:28 AM
next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART - by davidmanze - 06-16-2017, 10:59 AM
next PZ lens test report: Sigma 50-100mm f/1.8 DC HSM ART - by davidmanze - 06-16-2017, 06:02 PM

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