- Total lens length 374.7mm
- Total lens length 343.5mm
- Inner focus
- Diffraction optical element
I'm a little bit surprised that the DO is giving a size advantage of just a little bit more than 3 cm.
I suppose that this is due to how strong the diffraction effect of the DO is and that this patent is giving more to IQ than size advantage.
But what is left of the advantage of the DO then? Less CA?
Comparing actual "standard" to "DO" lenses with that little size advantage I would go the standard - if I had the money and the need of such a lens.
Or do I miss something? Advice is very welcome. Thanks.
(Disclaimer: I know of course that these patents have to turn into real available products, and that patents are not quite good for IQ discussions. But my question is still there...)