New Olympus dSLRs

Hi All,

Olympus announced yesterday two new dSLR:
http://www.dimagemaker.com/article.php?articleID=916
and
http://www.dimagemaker.com/article.php?articleID=915

Cheers,

Wayne
--
Wayne J. Cosshall
Publisher, The Digital ImageMaker, http://www.dimagemaker.com/
Blog http://www.digitalimagemakerworld.com/

"Wayne J. Cosshall" <wayne@dimagemaker.com> wrote in message
news:45ec7649$0$16556$afc38c87@news.optusnet.com.a u...
> Hi All,
>
> Olympus announced yesterday two new dSLR:
> http://www.dimagemaker.com/article.php?articleID=916
> and
> http://www.dimagemaker.com/article.php?articleID=915

Probably the most interesting announcements of PMA, for me. CMOS sensors
from Matsushita? If they can control the noise, they've got a couple of
winners. Pricing is odd, though. The model with IS is only a $100 (US) more
than the lower model? Who would bother with the lower model?

>
> Cheers,
>
> Wayne
> --
> Wayne J. Cosshall
> Publisher, The Digital ImageMaker, http://www.dimagemaker.com/
> Blog http://www.digitalimagemakerworld.com/

"Kinon O'Cann" <nah@not.now> skrev i meddelandet
news:h10Hh.10528$PG5.9984@trndny07...
>
> "Wayne J. Cosshall" <wayne@dimagemaker.com> wrote in message
> news:45ec7649$0$16556$afc38c87@news.optusnet.com.a u...
>> Hi All,
>>
>> Olympus announced yesterday two new dSLR:
>> http://www.dimagemaker.com/article.php?articleID=916
>> and
>> http://www.dimagemaker.com/article.php?articleID=915
>
> Probably the most interesting announcements of PMA, for me. CMOS sensors
> from Matsushita? If they can control the noise, they've got a couple of
> winners. Pricing is odd, though. The model with IS is only a $100 (US)
> more than the lower model? Who would bother with the lower model?

Because it's smaller?


Regards,

Per Nordenberg

--------------------------------------------------------------------------------
Jag använder en gratisversion av SPAMfighter för privata användare.
10484 spam har blivit blockerade hittills.
Betalande användare har inte detta meddelande i sin e-post.
Hämta gratis SPAMfighter idag!

Pictures suggest Olympus has given up trying to move users to
non-traditional form factors. These cameras resemble a 1930s Exacta, the way
consumers expect a "serious" camera to look. One wonders when Leicasonic
will abandon their form factor.

On Mar 5, 2:58 pm, "Wayne J. Cosshall" <w...@dimagemaker.com> wrote:
> Hi All,
>
> Olympus announced yesterday two new dSLR:http://www.dimagemaker.com/article.php?articleID=916
> andhttp://www.dimagemaker.com/article.php?articleID=915

Eh. I'd never buy a four-thirds camera. Those sensors are just way too
small. 1/4 the size of a 35mm frame means 4 times the noise. I'm
waiting to see if any manufacturer announces a new full-frame body at
PMA.

-Gniewko

lubecki@hotmail.com wrote:
> On Mar 5, 2:58 pm, "Wayne J. Cosshall" <w...@dimagemaker.com> wrote:
>> Hi All,
>>
>> Olympus announced yesterday two new
>> dSLR:http://www.dimagemaker.com/article.php?articleID=916
>> andhttp://www.dimagemaker.com/article.php?articleID=915
>
> Eh. I'd never buy a four-thirds camera. Those sensors are just way too
> small. 1/4 the size of a 35mm frame means 4 times the noise. I'm
> waiting to see if any manufacturer announces a new full-frame body at
> PMA.

Many expect Nikon to announce a FF or perhaps near-FF, at 1.1x.
We'll see...

--
Images (Plus Snaps & Grabs) by Mark² at:
www.pbase.com/markuson

In article <1173135773.186662.282960@s48g2000cws.googlegroups .com>,
says...

> Eh. I'd never buy a four-thirds camera. Those sensors are just way too
> small. 1/4 the size of a 35mm frame means 4 times the noise.

Nonsense. Maybe two times, but not four times.
--

Alfred Molon
------------------------------
Olympus 50X0, 7070, 8080, E300, E330, E400 and E500 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site

"Alfred Molon" <alfred_molonDELETE@yahoo.com> wrote:
> In article <1173135773.186662.282960@s48g2000cws.googlegroups .com>,
> says...
>
>> Eh. I'd never buy a four-thirds camera. Those sensors are just way too
>> small. 1/4 the size of a 35mm frame means 4 times the noise.
>
> Nonsense. Maybe two times, but not four times.

I agree. You are exactly right.

To achieve the same photon shot noise levels, a sensor 1/4 the area must use
an exposure four times longer.

Thus the larger camera seems to be four times more sensitive. ISO 800 here
looks like what the 4/3 users see at ISO 200.

But noise goes down as the square root of the measurement, so the amplitude
of the 4/3 camera noise is only twice that of the FF camera.

So, as you point out, the smaller camera is only twice as bad.

So while a photographer would find the 4/3 camera to have "four times the
noise", we theoreticians realize that it's only twice the noise.

David J. Littleboy
davidjl@obnoxious.nerds.com
Tokyo, Japan

David J. Littleboy wrote:
> "Alfred Molon" <alfred_molonDELETE@yahoo.com> wrote:
>> In article <1173135773.186662.282960@s48g2000cws.googlegroups .com>,
>> says...
>>
>>> Eh. I'd never buy a four-thirds camera. Those sensors are just way too
>>> small. 1/4 the size of a 35mm frame means 4 times the noise.
>> Nonsense. Maybe two times, but not four times.
>
> I agree. You are exactly right.
>
> To achieve the same photon shot noise levels, a sensor 1/4 the area must use
> an exposure four times longer.
>
> Thus the larger camera seems to be four times more sensitive. ISO 800 here
> looks like what the 4/3 users see at ISO 200.
>
> But noise goes down as the square root of the measurement, so the amplitude
> of the 4/3 camera noise is only twice that of the FF camera.
>
> So, as you point out, the smaller camera is only twice as bad.
>
> So while a photographer would find the 4/3 camera to have "four times the
> noise", we theoreticians realize that it's only twice the noise.
>
> David J. Littleboy
> davidjl@obnoxious.nerds.com
> Tokyo, Japan

Another factor in performance is Unity Gain ISO, the point at which
1 bit in the A/D equals 1 electron. If you increase ISO above
that point, you increase noise and signal equally, thus you
gain nothing in terms of S/N ratio. The smaller pixels reach that
point at a lower ISO. The Olympus E410 and E510, for example, have
4.7 micron pixel pitch, giving unity gain ISO somewhere in the
400 to 800 range, compared to other DSLRs which are in the 800
to 1600 range. This is a factor of 2 loss, but significant in my opinion.
http://www.clarkvision.com/imagedeta...ary/index.html

Roger

babaloo <fac187@hotmail.com> wrote:

> Pictures suggest Olympus has given up trying to move users to
> non-traditional form factors. These cameras resemble a 1930s Exacta, the way
> consumers expect a "serious" camera to look. One wonders when Leicasonic
> will abandon their form factor.

I agree - the new bodies are a throwback to an earlier age - I did
admire Oly for going with bodies that were all 'digital', ie the lens
mount being flush against the left edge.