GR Digital V has an APS-C sensor

Started Jan 21, 2013 | Discussions thread
Tom Caldwell Forum Pro • Posts: 34,160
Re: GR Digital V has an APS-C sensor

casaubon wrote:

If Ricoh is able to make use of X100-style microlenses tuned to their chosen fixed lens, then this camera could easily end up a good deal smaller than the GXR/28mm combination. The GXR (and previous GRD) lenses are built around the idea of telecentricity being necessary for good wide-angle performance on a digital sensor - hence their nozzlecam extending lenses. One would hope that with the GR line's reputation for small size, Ricoh will be at least as ingenious as Fujifilm at making their flagship camera compact in all ways possible, including positioning the lens deep inside the body.

The biogon design has a great reputation and retrofits inside the camera body, but might be hard to make collapsible. Nevertheless there would not be a great protrusion if the sensor was placed as far back as possible. venerable RF lenses of the biogon type focused on to the 35mm film plane and only produced 21-26mm protrusion beyond the lens mount. But even this amount of protrusion would destroy the flat-compact portable shape of the existing GRDIII/IV. A modern re-work of the design might save a few millimetres. One of the problems of the ever-so-small Pentax Q is that any attached lens makes it as deep (deeper?) as it is wide and therefore makes it more awkward to pack.

Surprisingly (and the killer) is that if the GRDV was even noticably larger than the GRDIV it might replace then it would immediately create a need for a new line of camera with small sensor and flat folding lens to replace the GRDIV.

A conundrum that the chant for an aps-c version refuses to acknowledge. However if Ricoh can indeed make an aps-c sensored GRDV with flat folding lens of much the same dimensions as the present GRDIV then all will be forgiven. We tend to forget that Ricoh's involvement in copier manufacture must aid its design work in small highly capable macro enabled lenses. Less so for lenses manufactured for working in conjunction with larger sensors.

I must also note that the GRDIII did acquire some flab over the GRD/II model to accommodate the much better faster later lens. This was quickly forgotten as the benefits outweighed the rather small size-pain involved.

Even the similarly slim and almost identically dimensioned Panasonic LX series was much harder to carry about everywhere as the extra small amount of the lens stub protrusion was in reality the straw on the camel's back as an overall size consideration.

In a small camera body even a millimetre here and another there can make a very real difference.

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Tom Caldwell

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