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Tokina SZ-X SD 28-105mm f/4-5.3 Vintage Lens Review - Performance

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Tokina SZ-X SD 28-105mm f/4-5.3 Performance

The test chart we use is only applicable to this lens from about 50mm, simply because we cannot focus close enough, so the results are taken here at 50mm, 70mm and 105mm. The graphs show the variance of maximum aperture at 50mm and 70mm, and in the case of 105mm that information is available for all the aperture range, so that is shown.

At 50mm, central sharpness is excellent from f/4.8 to f/8 and very good from f/11 to f/22. The edges are very good from f/4.8 to f/16 and still good at f/22.

At 70mm, central sharpness is excellent from f/5.1 to f/11 and very good at f/16 and f/22. The edges are very good at f/5.1 and f/5.6, excellent at f/8, very good at f/11 and f/16 and good at f/22.

At 105mm, central sharpness is excellent from f/5.3 to f/14.6, very good at f/21.2 and good at f/29.2. The edges are good from f/5.3 to f/10.6, very good at f/14.6 and f/21.2 and still good at f/29.2.

These sharpness results are very impressive and result in some lovely sharp, crisp images.

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Tokina SZ-X SD 28-105mm f/4-5.3 MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Sony Alpha A7 III using Imatest. Want to know more about how we review lenses?

 

CA (Chromatic Aberration) at 50mm is very much under control centrally and very good at the edges. At 70mm, central CA is still low and it is only as we stop down that the edges start to lose out. 105mm is still low centrally, shows some CA at the edges, but the figures are very much lower overall than many current lenses.

 

Tokina SZ-X SD 28-105mm f/4-5.3 Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Sony Alpha A7 III using Imatest.

 

There is barrel distortion at 28mm, but by 50mm this has given way to +2.02% pincushion. Pincushion measures +2.13% at 70mm and +2.07% at 105mm. This would be visible for critical subjects, but for general shooting it is very acceptable. Further correction is software would be possible.

Bokeh, the quality of the out of focus areas in an image, suffers a little, with the six-bladed diaphragm resulting in a relatively ragged transition rather than the smoothness that we are generally looking for.

Multi-coating is not always up to current standards in vintage lenses, and this is no exception. Shooting into the light results in a major loss of contrast and a multitude of artefacts. Anyone looking for flare effects might find this interesting to experiment with. Generally, with less critical front or side lighting the images have good contrast and plenty of bite.

 

Tokina SZ-X SD 28-105mm f/4-5.3 Vignetting Charts

Vignetting is very reasonable. Vignetting is where light falls off, and is reduced, giving a darker image towards the corners of the frame.

Whatever handling issues there may be, it is quite clear that the technical performance is actually well up to the mark and in some respects very impressive.


Tokina SZ-X SD 28-105mm f/4-5.3 Sample Photos

 

Tokina SZ-X SD 28-105mm f/4-5.3 Aperture range

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.


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