There is no magical size/weight advantage

Started Mar 5, 2014 | Discussions thread
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Paul Pasco
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Re: There is no magical size/weight advantage
In reply to IVN, Mar 5, 2014

Physics is physics but a smaller image circle can make a significant difference in the overall design and size of a lens, particularly on the wide end of the spectrum. Compare these two for example: Samyang 10/2.8 APS-C: 86mm diameter, 77mm long and 580 g. Nikon 10/2.8 CX: 55.5mm diameter, 22mm long and 77g. Of course these have totally different equivalentfocal lengths but their actual focal lengths are the same. So I guess in this case at least there is a huge size and weight advantage, if not a magical one.

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Regards, Paul
Lili's Dad

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