There is no magical size/weight advantage

Started 7 months ago | Discussions thread
olyflyer
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Re: There is no magical size/weight advantage
In reply to razormac, 7 months ago

razormac wrote:

Paul Pasco wrote:

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

Thank you

And look at the N1 18mm f1.8

The FX closest alternatives are Nikon 20mm f2.8 and Sigma 20mm f1.8

Nikon N1 18mm f1.8 (2.2x1.41in)

Nikon 20mm F2.8 (2.72x1.67in)

Sigma 20mm f1.8 (3.5x3.4in)

the only 18mm FX I am aware of is the Zeiss f3.5 and it is a whopping 3.31x3.43in

As far as the relative aperture argument, there have been so many tail-chasing threads on this issue that I for one am sick of reading them. I don't care what the DOF equivalent on FF would be. I know what DOF I get out of my N1 lenses, and the interplay of ISO, Aperture and Shutter Speed and adjust accordingly.

Bottomline: my gear bag when I go N1 system only in the field is much lighter and smaller than carrying DX and FX lenses and bodies, and the pics (within the limits of the camera system) are just fine.

You didn't get it...

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