Re: The sickening reality of high ISO on a P&S

On Thu, 18 Dec 2008 19:34:24 -0600, arnold h.
<ah@xxxxxxxxxxxxxxxxxxxx> wrote:

On Thu, 18 Dec 2008 20:26:13 -0500, "RichA" <obama@xxxxxxxxxxxxxxxxx> wrote:


"ron cambers" <rcambers@xxxxxxxxxxx> wrote in message
news:gcqjk4l88mah9r07rd1j1cuf4h54qh4g1u@xxxxxxxxxx
On Wed, 17 Dec 2008 17:19:35 -0800, John Navas
<spamfilter1@xxxxxxxxxxxxxx>
wrote:

On Wed, 17 Dec 2008 19:58:37 -0500, Stephen Bishop
<nospamplease@xxxxxxx> wrote in
<ir7jk4p99jp8kcdmavp2fpa6p4ea4q9mi2@xxxxxxx>:

On Wed, 17 Dec 2008 11:13:31 -0600, ReplyingToIdiots
<spamless@xxxxxxxxxxxx> wrote:

If you want to change lenses, there is only one choice. But for either
camera type, if you don't want creativity set it on Auto and shoot
away.
Just don't expect the lens on a P&S to have the same capability as a
good SLR lens.

Wrong bucko. It's already been proved that P&S glass is
diffraction-limited (it
has to be), the highest quality of optics possible. P&S glass can
resolve
anywhere from 4 to 10 times more detail than any dSLR glass in
existence. Stop
parroting net-nonsense. Just because you've read that crap 10,000 places
doesn't
make it true.

Actually, with all the clipping and quoting, you've kept some things
up there that I never said.

Regardless, it hasn't been proven at all that p&s glass is of the
highest quality possible. Show some examples that demonstrate p&s
glass actually does resolve 4-10 times more detail in the real world
than any dslr glass in existence. There are none.

I agree that's a wild claim, but the best lenses on compact camera do
compare very well to the best dSLR systems.

In terms of resolution, the Leica super-zoom 36-432 mm (35 mm equiv)
f/2.8-3.1 on the Panasonic DMC-FZ8 actually surpasses comparable dSLR;
e.g., fixed prime Canon EF 50 mm f/1.4 on the EOS D60, 10D, and 300D, as
well as the fixed prime Nikkor 50 mm f/1.4 on the Nikon D100, and fixed
prime Nikkor 50 mm f/1.8 on the Nikon D50, D70s, and D40:
http://www.dpreview.com/reviews/panasonicfz8/page16.asp
http://www.dpreview.com/reviews/CanonEOS10D/page22.asp
http://www.dpreview.com/reviews/NikonD100/page20.asp
http://www.dpreview.com/reviews/nikond50/page25.asp
http://www.dpreview.com/reviews/nikond40/page24.asp

That's pretty amazing for a super-zoom lens.

The closest Canon 35 mm lens to the Leica super-zoom is the EF 28-300mm
f/3.5-5.6L IS USM Autofocus lens, which, even at about 10x the cost of
the Leica super-zoom, is well below that level of performance, including
slower speed and shorter zoom range, along with much greater size and
weight.

Adjust those resolution tests for photosite sizes and nearly *ALL* P&S
lenses
are vastly out-resolving and out-performing *ANY* DSLR glass in existence.


For a similar pixel count, a P&S may resolve as much as a DSLR, but the
DSLR images are so much cleaner, lacking in artifacts and noise that they
end up showing more real detail anyway. In fact, what some people see as
detail or texture in an image with a P&S are merely artifacts and noise.


In your own imagination.

The P&S lens is diffraction-limited quality optics, the best the world can
produce. The DSLR glass is not, never has been, and never will be. This allows
the P&S glass to resolve down to individual pixel detail. The same can never be
said of *ANY* DSLR glass.

However correct you may or may not be about that, it never shows up in
practice because of the limitations of the smaller high pixel density
sensors in the cameras. That isn't even debatable, as any side by
side comparision will reveal.

Put another way, in a p&s the lens reveals the deficiencies of the
sensor; while in a dslr the sensor often reveals the deficiencies of
the lenses. But at the end of the day, the dslr will produce more
detailed and cleaner images, given a good lens and someone who can use
it.


.

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