Correction of the lens for Tamron 17-50 2.8 could be better?

17mm SANS correction profil objectif Tamron.pngThis is WITHOUT the lens profile correction.

17mm avec correction profil objectif Tamron.png... and that's WITH the lens profile correction. Not very obvious, isn't it?

Upper right corner of a photo taken with the Tamron 17-50 2.8 at 17mm 5.6.

The cut isn't right but a funny!

Most likely, the slope of the cut in the corner of the image is not created by the distortion of the lens, but the camera pointing down.

When the camera is not required to level but pointing upwards or downwards, the sensor is not in parallel with the vertical lines of the Cup. It is the phenomenon of "Scheimpflug" - google for this word and you will get many results. The phenomenon of "Scheimpflug" becomes stronger towards the edges of the image.

That's why the architecture photographers use "see photo" where you can adjust the angle of the plane of the film or digital sensor map so that it is parallel to the vertical lines of a building.

You can adjust the tilt of the cutting with the manual vertical slider in the Correction of the lens, and you may need to adjust the horizontal slider as well. The compromise is now, your image will be severely "trapezoidal" and it's probably not what you want.

But you can't blame the lens profile. Profile lens corrects only distortion of the lens, no distortion by the principle of "Scheimpflug.

PS: A tilt-shift lens will also correct the distortions of the principle "Scheimpflug.

Tags: Photoshop Lightroom

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