ZS40 Telemacro Results

 



Telemacro Test Results


The results from the tests are summarised in the table below:

It is interesting, as can be seen from the table, that the best telemacro magnification for the ZS40 is not at maximum zoom but at a zoom setting of 500mm.  At 500mm FL the minimum field width is 3.4 inches (8.7cm) at the nearest focus distance (front of lens to subject) of 42 inches (1.07m).


At 400mm FL the field width is 3.5 inches (8.9cm) at the nearest focus of 34 inches (0.87m).


At 600mm FL the field width is 3.6 inches (9.1cm) at the nearest focus of 53 inches (1.35m).


At 720mm FL (max zoom) the field width is 4.0 inches (10.2cm) at the nearest focus of 72 inches (1.84m).



Telemacro Example


Below is a flower on a cardinal vine taken hand-held at 720mm FL (equiv.) at a distance of about 2m.  The flower is about 5cm (2 inches) wide.  (Click on the image for the full sized view.)



Cardinal Vine:  ZS40 at 720mm FL, 1/60s, f/6.4, 100 ISO



Conclusion


The tests showed that the telemacro outcomes with the longer zoom of the ZS40 are rather different from the ZS20/ZS30.   It can be seen from the results that there is a wide range of subject distances (about 0.9m to 2m) at which a telemacro field width of 3.4 to 4.0 inches (8.7 to 10.2cm) can be achieved.  This is quite useful in practice since it allows different degrees of OOF background for a particular subject depending on the distance, zoom setting and aperture setting.  It can also be valuable when space is restricted and a distance of 2m from the subject at a zoom setting of 720mm FL is not possible.





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