Re: [Avid-L2] New Nikon D3

Steve,

I'm with you, but with all due respect, you erred in attributing
the Canon's picture quality to its large RASTER size. In fact, its
lesser DOF, increased sensitivity, and lower noise are due to large
PHYSICAL sensor size, not RASTER size. A full frame 6 megapixel
camera would equal a full frame 24 megapixel camera in DOF, ISO, and
S/N, all other factors being equal.

Cheers,
Wilson

On Fri, Oct 16, 2009 at 10:43 AM, Steve Hullfish <Steve@veralith.com> wrote:
>
>
>
> I disagree, Rick.
>
> The only reason the Canon - and other large sensor cameras - look as
> good as they do is because of their large raster size.
>
> We just played through this discussion a week ago, with me
> accidentally mixing up large depth of field with small depth of field.
>
> The bigger you image sensor, the less your depth of field, which is
> what makes a lot of images very appealing. Small-sensor prosumer
> cameras, like my DVX100a, have a sensor that may well be more than
> adequate to capture HD images on a pixel for pixel basis, but the size
> of the sensor means that depth of field is very large. That's nice for
> keeping everything in focus at all times, but not so nice when you
> want a beautiful SMALL depth of field with the background thrown out
> of focus and gorgeous bokeh in the lights in the background.
>
> So, yes, you DO need a full frame sensor.
>
> Even the 7D "magnifies" the focal length of a regular lens over the
> way it's "supposed" to look on a full sensor or 35mm film. I don't
> remember the ratio, but on a 5D, a 50mm lens looks like a real 50mm
> lens is supposed to and on a 7D it looks more like a 70mm lens.
>
> I don't have any idea how much the sensor size between the 5D and the
> 7D changes the actual look of the depth of field. I'd love to see some
> pretty shot with out of focus lights in the background shot with the
> same lens on the 5D and the 7D from the same position. The 7D would
> look closer and have more depth of field (I almost typed "less"
> again). But by how much?
>
> I also don't think the 7D has the same light sensitivity as the 5D. In
> addition to more pixels on the 5D sensor, I think the pixels (or
> whatever the light sensing units are called) are actually LARGER,
> allowing them to gather light better, increasing their sensitivity and
> lowering noise.
>
> On Oct 16, 2009, at 8:59 AM, Rick wrote:
>
> > You don't need a full frame sensor for 1080. It's only 2.1 megapixels.
> >
> > Rick Emery
> > www.rickemery.com

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