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Canon 40D



 
 
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  #1  
Old August 19th 07, 12:34 PM posted to rec.photo.digital.slr-systems
David Kilpatrick
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Posts: 693
Default Canon 40D

http://www.amazon.com/Canon-40D-10-1...703393-3107158

Sound plausible, the press conference is at 10.00am in London tomorrow,
probably breaking earlier than that elsewhere in the world.

Live preview (howls of protest)
Only 10 megapixels (triumph of sanity)
6.5 fps (nice)
Silent shooting mode (electronic shutter with mirror/shutter open -
valuable)
Tethered USB HD possible
GPS data embeddding possible
Wireless g possible
Gigabit ethernet tethered operation possible
HTTP embedded interface option for tethered operation
Auto ISO defaults to 400 and spans 100-800 - means they must be
confident about 400 quality
14-bit conversion and a highlight extended mode
But basic ISO just 100 to 1600, 3200 is a menu accessed option
1/250th flash
Interchangeable screens including one you can really focus on
Totally new CMOS AF module with very high precision crossed unit for
f5.6 or darker lenses (ie typical superzooms at the long end)


David

--
Icon Publications Ltd, Maxwell Place, Maxwell Lane, Kelso TD5 7BB
Company Registered in England No 2122711. Registered Office 12 Exchange
St, Retford, Notts DN22 6BL
VAT Reg No GB458101463
Trading as Icon Publications Ltd, Photoworld Club and Troubadour.uk.com
www.iconpublications.com - www.troubadour.uk.com - www.f2photo.co.uk -
www.photoclubalpha.com - www.minoltaclub.co.uk
Tel +44 1573 226032
  #2  
Old August 19th 07, 01:14 PM posted to rec.photo.digital.slr-systems
Tony Polson
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Posts: 1,194
Default Canon 40D

David Kilpatrick wrote:

http://www.amazon.com/Canon-40D-10-1...703393-3107158

Sound plausible, the press conference is at 10.00am in London tomorrow,
probably breaking earlier than that elsewhere in the world.

Live preview (howls of protest)
Only 10 megapixels (triumph of sanity)
6.5 fps (nice)
Silent shooting mode (electronic shutter with mirror/shutter open -
valuable)
Tethered USB HD possible
GPS data embeddding possible
Wireless g possible
Gigabit ethernet tethered operation possible
HTTP embedded interface option for tethered operation
Auto ISO defaults to 400 and spans 100-800 - means they must be
confident about 400 quality
14-bit conversion and a highlight extended mode
But basic ISO just 100 to 1600, 3200 is a menu accessed option
1/250th flash
Interchangeable screens including one you can really focus on
Totally new CMOS AF module with very high precision crossed unit for
f5.6 or darker lenses (ie typical superzooms at the long end)



Some really sensible features here, David.

You're right that the live preview feature will draw howls of protest,
but only until the protesters find out just how useful it is, when
they will demand the same from "their own" DSLR manufacturer. Of
course some manufacturers, notably Olympus, already offer this very
valuable feature.

The silent shooting mode, auto ISO, 1/250 sec. flash synch, choice of
focusing screens and low light AF module signal serious intent, as
these are also among the key features of the "pro level" Canon DSLRs
that will be announced soon.

  #3  
Old August 19th 07, 02:03 PM posted to rec.photo.digital.slr-systems
Alan Browne
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Posts: 12,640
Default Canon 40D

David Kilpatrick wrote:
http://www.amazon.com/Canon-40D-10-1...703393-3107158


Sound plausible, the press conference is at 10.00am in London tomorrow,
probably breaking earlier than that elsewhere in the world.

Live preview (howls of protest)
Only 10 megapixels (triumph of sanity)
6.5 fps (nice)
Silent shooting mode (electronic shutter with mirror/shutter open -
valuable)
Tethered USB HD possible
GPS data embeddding possible
Wireless g possible
Gigabit ethernet tethered operation possible
HTTP embedded interface option for tethered operation
Auto ISO defaults to 400 and spans 100-800 - means they must be
confident about 400 quality
14-bit conversion and a highlight extended mode
But basic ISO just 100 to 1600, 3200 is a menu accessed option
1/250th flash
Interchangeable screens including one you can really focus on
Totally new CMOS AF module with very high precision crossed unit for
f5.6 or darker lenses (ie typical superzooms at the long end)


Live preview sounds like it is slowly becoming a normal requirement of
DSLR's.

Electronic shuttering is very interesting. What are the speeds
available for this?

What is the max sync speed available with this? (If the max sync is
1/250 and they don't take advantage of electronic shuttering to push
this to 1/500 or higher (a la D70 and others) it is a waste of potential.

GPS data embedding. Good!

Gigabit ethernet! This could become (s/w prob required) a very high res
movie camera when combined with live pre-v.

Interchangeable screens is great.

Good spec. It seems like Canon are really testing the want for certain
features with this model.

Thanks for posting the highlights.

Cheers,
Alan.


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  #4  
Old August 19th 07, 02:07 PM posted to rec.photo.digital.slr-systems
Doug Jewell
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Posts: 141
Default Canon 40D


"David Kilpatrick" wrote in message
...
http://www.amazon.com/Canon-40D-10-1...703393-3107158

Sound plausible, the press conference is at 10.00am in London tomorrow,
probably breaking earlier than that elsewhere in the world.

Live preview (howls of protest)
Only 10 megapixels (triumph of sanity)
6.5 fps (nice)
Silent shooting mode (electronic shutter with mirror/shutter open -
valuable)
Tethered USB HD possible
GPS data embeddding possible
Wireless g possible
Gigabit ethernet tethered operation possible
HTTP embedded interface option for tethered operation
Auto ISO defaults to 400 and spans 100-800 - means they must be confident
about 400 quality
14-bit conversion and a highlight extended mode
But basic ISO just 100 to 1600, 3200 is a menu accessed option
1/250th flash
Interchangeable screens including one you can really focus on
Totally new CMOS AF module with very high precision crossed unit for f5.6
or darker lenses (ie typical superzooms at the long end)

Hmmm...
quoting from the site:
"Highlight tone priority: Expands tonal range of bright highlights by about
one stop; ISO range limited to 200 to 1600; activated by C.Fn II-3-1"
So basically, what it is doing is underexposing by 1 stop. I've found that
most DSLRs need around -.7/-1 exposure compensation to get something vaguely
acceptible in the highlights anyway. This means that at an ISO the
manufacturer calls 100, the shutter/aperture combination would indicate you
are really using ISO 160/200.



David

--
Icon Publications Ltd, Maxwell Place, Maxwell Lane, Kelso TD5 7BB
Company Registered in England No 2122711. Registered Office 12 Exchange
St, Retford, Notts DN22 6BL
VAT Reg No GB458101463
Trading as Icon Publications Ltd, Photoworld Club and Troubadour.uk.com
www.iconpublications.com - www.troubadour.uk.com - www.f2photo.co.uk -
www.photoclubalpha.com - www.minoltaclub.co.uk
Tel +44 1573 226032


  #5  
Old August 19th 07, 03:01 PM posted to rec.photo.digital.slr-systems
David Kilpatrick
external usenet poster
 
Posts: 693
Default Canon 40D

Doug Jewell wrote:

lenses (ie typical superzooms at the long end)

Hmmm...
quoting from the site:
"Highlight tone priority: Expands tonal range of bright highlights by
about one stop; ISO range limited to 200 to 1600; activated by C.Fn II-3-1"
So basically, what it is doing is underexposing by 1 stop. I've found
that most DSLRs need around -.7/-1 exposure compensation to get
something vaguely acceptible in the highlights anyway. This means that
at an ISO the manufacturer calls 100, the shutter/aperture combination
would indicate you are really using ISO 160/200.


This is pretty much a copy of Minolta's 'Hi' or 'Hi200' mode from the 7D
over three years ago - if you set this instead of a regular ISO setting,
the camera exposed as if set to 200, but the sensitivity was really just
left at ISO 100. A different JPEG conversion was used in-camera,
preserving highlights. If you shot a raw file, you could see straight
off how it worked - the raw file was dark. The same mode has continued
to be offered in the KM 5D and the Sony A100.

The difference with the Canon mode is that it works across a range of
ISO speeds - I guess KM/Sony did not do this, because of noise issues
when you underexpose a higher ISO image, then brighten it in raw
conversion. Canon must have some confidence in the noise levels of the
40D, compared to the 400D.

David
  #6  
Old August 19th 07, 06:00 PM posted to rec.photo.digital.slr-systems
King Sardon
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Posts: 242
Default Canon 40D

On Sun, 19 Aug 2007 12:34:57 +0100, David Kilpatrick
wrote:

http://www.amazon.com/Canon-40D-10-1...703393-3107158


Amazon has removed the page... Bob Atkins has captured the info,
though, at
http://www.bobatkins.com/photography...n_eos_40D.html

KS
  #7  
Old August 20th 07, 03:27 AM posted to rec.photo.digital.slr-systems
John Sheehy
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Posts: 878
Default Canon 40D

David Kilpatrick wrote in
:

The difference with the Canon mode is that it works across a range of
ISO speeds - I guess KM/Sony did not do this, because of noise issues
when you underexpose a higher ISO image, then brighten it in raw
conversion. Canon must have some confidence in the noise levels of the
40D, compared to the 400D.


The 400D is already exposing 1/2 stop lower than other Canon DSLRs (it
meters for about 85% of the stated ISO, as opposed to the 120% used for the
other Canons), and if you set a contrast level of -2, it will automatically
roll extra highlights into the JPEGs (moreso than the other cameras do at -
2 contrast).


--


John P Sheehy

  #8  
Old August 20th 07, 03:32 AM posted to rec.photo.digital.slr-systems
John Sheehy
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Posts: 878
Default Canon 40D

I, John Sheehy wrote in
:

The 400D is already exposing 1/2 stop lower than other Canon DSLRs (it
meters for about 85% of the stated ISO, as opposed to the 120% used
for the other Canons),


Whoops!

Both cameras meter for about 120% of the stated ISO. I meant to say that
based on a standard of 3.5 stops of highlight headroom above middle grey,
the real sensitivity of the 400D is about 85% of the stated ISO (compared
to 120% for other Canons).

--


John P Sheehy

  #9  
Old August 24th 07, 02:14 AM posted to rec.photo.digital.slr-systems
Not Disclosed
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Posts: 119
Default Canon 40D

David Kilpatrick wrote:
http://www.amazon.com/Canon-40D-10-1...703393-3107158


Sound plausible, the press conference is at 10.00am in London tomorrow,
probably breaking earlier than that elsewhere in the world.

Live preview (howls of protest)


The Canon 50D will also do MPEG4 videos


 




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