EOS Full Frame Sensor Light Fall-Off Test

[Cotty]

Found on another list...

<http://www.ejphoto.com/1ds2_vs_5d.htm>



--


Cheers,
  Cotty


___/\__
||   (O)   |     People, Places, Pastiche
||=====|    http://www.cottysnaps.com
_____________________________


*
****
*******
***********************************************************
*  For list instructions, including unsubscribe, see:
*    http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************

[Malcolm Stewart]

----- Original Message -----
From: "Cotty" <cottycam@...>
To: "EOS list" <eos@...>
Sent: Thursday, December 14, 2006 7:33 AM
Subject: EOS Full Frame Sensor Light Fall-Off Test


> Found on another list...
>
> <http://www.ejphoto.com/1ds2_vs_5d.htm>
>
> Cheers,
>  Cotty

Thanks Cotty.

A useful reference.  In practice, and over several thousand shots in the
last year, with my 5D, I've only observed the light fall-off when doing
tests specifically looking for it.  The effect seems totally absent (!)
when I check out my 17-35 EX HSM Sigma (original model).  Don't know why -
the AF motor on the Sigma has failed so my usable widest is the EF 20 f2.8,
which can be horrific at f2.8 on some shots, and less so on others.

My current gripe with my 5D is that the central AF spot is ever so slightly
lower than the rectangle marker in the viewfinder. Has lead to quite a few
out of focus shots (similar to front focusing, which it isn't) of small
birds against near glancing angle backgrounds such as paths etc.

Malcolm
Milton Keynes, UK


*
****
*******
***********************************************************
*  For list instructions, including unsubscribe, see:
*    http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************

[Cotty]

On 14/12/06, Malcolm Stewart, discombobulated, unleashed:

>A useful reference.  In practice, and over several thousand shots in the
>last year, with my 5D, I've only observed the light fall-off when doing
>tests specifically looking for it.  The effect seems totally absent (!)
>when I check out my 17-35 EX HSM Sigma (original model).  Don't know why -
>the AF motor on the Sigma has failed so my usable widest is the EF 20 f2.8,
>which can be horrific at f2.8 on some shots, and less so on others.
>
>My current gripe with my 5D is that the central AF spot is ever so slightly
>lower than the rectangle marker in the viewfinder. Has lead to quite a few
>out of focus shots (similar to front focusing, which it isn't) of small
>birds against near glancing angle backgrounds such as paths etc.

I take it you've seen this?

<http://www.luminous-landscape.com/reviews/cameras/5d-field.shtml>

--


Cheers,
  Cotty


___/\__
||   (O)   |     People, Places, Pastiche
||=====|    http://www.cottysnaps.com
_____________________________


*
****
*******
***********************************************************
*  For list instructions, including unsubscribe, see:
*    http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************

[Malcolm Stewart]

----- Original Message -----
From: "Cotty" <cottycam@...>
To: "EOS list" <eos@...>
Sent: Thursday, December 14, 2006 6:57 PM
Subject: Re: EOS Full Frame Sensor Light Fall-Off Test
> On 14/12/06, Malcolm Stewart, discombobulated, unleashed:

>>My current gripe with my 5D is that the central AF spot is ever so
>>slightly
>>lower than the rectangle marker in the viewfinder. Has lead to quite a few
>>out of focus shots (similar to front focusing, which it isn't) of small
>>birds against near glancing angle backgrounds such as paths etc.

> I take it you've seen this?
> <http://www.luminous-landscape.com/reviews/cameras/5d-field.shtml>
> Cheers,
>  Cotty

Hi Cotty,
Thanks for reminding me - I had seen that review earlier, and I've also
spent much time recently re-reading 5D and 1D MkII (&N) reviews.  I've also
dusted off my EOS 3 and shot similar scenes with that camera. and checked
the critically sharp hit rate.  Like an idiot I used negative film which I
thought I could assess under a microscope - not as well as I need, so I'll
probably repeat using slide film.

In the mean time, I am surprised by the high price of used 1D MkII* and N
variant bodies - in the case of an N rather too close to the latest prices
for a totally new camera, with a full year's warranty.
*Although I did chase after one at £900 for a few days.  Backed out as I
became very suspicious of the seller's real intentions.

Malcolm
Milton Keynes, UK


*
****
*******
***********************************************************
*  For list instructions, including unsubscribe, see:
*    http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************