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Lens review

Tamron 70-180 mm f/2.8 Di III VC VXD G2

8 February 2024
Maciej Lata││o

7. Coma, astigmatism and bokeh

The photos below show very clearly that the Tamron 70-180 mm f/2.8 Di III VC VXD G2 doesn't practically have any problems with coma. Images of a diode remain circular, without any meaningful deformations, no matter what focal length you employ or whether you look at the corner of the APS-C sensor or full frame. Once again in this category the Tamron should be praised.

Center, 70ámm, f/2.8 Corner APS-C, 70ámm, f/2.8 Corner FF, 70ámm, f/2.8
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh
Center, 125ámm, f/2.8 Corner APS-C, 125ámm, f/2.8 Corner FF, 125ámm, f/2.8
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh
Center, 180ámm, f/2.8 Corner APS-C, 180ámm, f/2.8 Corner FF, 180ámm, f/2.8
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh


Astigmatism,understood as an average difference between vertical and horizontal MTF50 function values, amounted to 4.2%. It is a value on the borderline between very low and low level and we didn't notice any significant differences between particular focal lengths.


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The appearance of defocused circles of light is not abysmal but, unfortunately, you can find some reasons to complain. First of all, aspherical elements inside the lens mean visible onion ring bokeh. Additionally, the lens shows distinct problems with mechanical vignetting because the circle in the corners of full frame is significantly truncated even after stopping down the lens by 2 EV.

Center, 180ámm, f/2.8 Corner APS-C, 180ámm, f/2.8 Corner FF, 180ámm, f/2.8
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh
Center, 180ámm, f/4.0 Corner APS-C, 180ámm, f/4.0 Corner FF, 180ámm, f/4.0
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh
Center, 180ámm, f/5.6 Corner APS-C, 180ámm, f/5.6 Corner FF, 180ámm, f/5.6
Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh Tamron 70-180 mm f/2.8 Di III VC VXD G2 - Coma, astigmatism and bokeh