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M43 Crop Factors to Nikon DX
#1

Here is an interesting question that I can't find the answer for anywhere online. Maybe one of you wizz-kids out there can either confirm my reasoning or tell me where I am wrong.

The Nikon DX sensor has a 1.5 crop factor when compared to full frame. This is because the sensor is smaller: 28.4mm diagnol for DX compared to 43.3mm diagnol for full frame. Likewise, my m43 camera has a 2x crop factor because it has a 22.5mm diagnol sensor. (2 x 22.5 is approximately the full frame 43.3).

This means when I use a full frame lens on my m43 camera, the *apparent* focal length is 2 times the stated one: 24mm becomes 48mm etc.

So...here is my question: I have 2 DX format leneses, my Nikon 12-24 and my trusty Nikon 18-200. The m43 sensor is 22.5mm diagnol and the DX sensor is 28.4mm. Does this mean that when I put a DX lens on my m43 body that the apparent crop factor is approx 1.25? (1.25 x 22.5 = 28.125)

Does this mean that my 12-24 on the GF-1 becomes a 15-30 equivalent and the 18-200 becomes a 22.5-250 equivalent?

I have never seen this discussed online - but I am sure that many inquiring minds want to know. Those would be 2 killer lens ranges if I am right. I accept that I may be wrong though - so feel free to educate me.

Thanks people.

BTW - I am patiently awaiting delivery of my Nikon G to M43 adapter.
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Messages In This Thread
M43 Crop Factors to Nikon DX - by Toad - Jun 28, 2010, 14:46
M43 Crop Factors to Nikon DX - by matthew - Jun 28, 2010, 18:28
M43 Crop Factors to Nikon DX - by shuttertalk - Jun 28, 2010, 18:30
M43 Crop Factors to Nikon DX - by shuttertalk - Jun 28, 2010, 18:33
M43 Crop Factors to Nikon DX - by Toad - Jun 28, 2010, 19:36

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