7100 as full frame?

Started Sep 3, 2014 | Discussions thread
Mr Gadget Senior Member • Posts: 1,973
Re: A lot?

Mako2011 wrote:

billfreedom wrote:

I cant quite figure out why the full frame cameras are so much more $$ than the DX versions.

For example, if you took the 7100 and simply swapped out the sensor and replaced with a full frame sensor and processor and mechanics, how much more $$ would the camera cost to make?

A bit more...relative term, IMO. You would need a bigger mirror box, a bigger mirror, a different/bigger AF unit (more a dimension issue), A bigger OVF assembly, A bigger file handling architecture for the bigger file size, bigger battery maybe, and the bigger sensor....and a bigger body to house it all. You might need a bigger price tag to keep it profitable as well. I suspect, it's just not as simple as you might think.

I kind of doubt your comment about a bigger file size, since both cameras are 24mpx the raw file sizes seem to range between 29-37mb, and both bodies share the same Expeed3 signal processor.

Looking more at the big picture (pun alert) though and comparing physical sizes between the D7100 and D610 - there isn't too much in the way of differences.

136 x 107 x 76 mm (5.35 x 4.21 x 2.99″)
765 g (1.69 lb / 26.98 oz)

141 x 113 x 82 mm (5.55 x 4.45 x 3.23″)
850 g (1.87 lb / 29.98 oz)

5 x 6 x 6 mm (0.20 x 0.24 x 0.24")
85 g (0.18 lb / 3 oz)

A bit bigger and a bit heavier, but not so much. It would be interesting to see a physical teardown of both cameras to see the actual differences between them. IMO, the $800 difference in price is mainly due to the marked up cost difference between a 24mm x 36mm sensor as compared to a 24mm x 18mm sensor.

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