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Archive 2007 · 'Un-Official' pre-PMA Rumor Thread

  
 
Juan55
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p.101 #1 · 'Un-Official' pre-PMA Rumor Thread


Could be that we are mixing up rumors and Canon is going also to introduce a body for "studio" in the Medium Format (or similar), and for that reason a new mount + lenses has to be introduced? Then the rumors about it has more sense to me.


Feb 15, 2007 at 02:42 PM
dcmiller
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p.101 #2 · 'Un-Official' pre-PMA Rumor Thread


halie wrote:
I'd say sensors and lenses are reaching the limits of human understanding more than the limits of physics. An eagle's eye can see a rabbit two miles away. Now that may be reaching the limits of physics as far as lens size and resolution are concerned.


Think of all the useful information left in the image circle. A significant portion of the area of a sensor is not light sensitive. Each light sensing area is measuring about a third of the visible spectrum. Make a bigger farm or farm more intensively?

An eagle can see a moving rabbit two miles away. Still camera designers don't get the luxury of that extra dimension.



Feb 15, 2007 at 02:47 PM
dcmiller
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p.101 #3 · 'Un-Official' pre-PMA Rumor Thread


Juan55 wrote:
Could be that we are mixing up rumors and Canon is going also to introduce a body for "studio" in the Medium Format (or similar), and for that reason a new mount + lenses has to be introduced? Then the rumors about it has more sense to me.


I don't think anybody wants to make a studio camera any more. The big push with MFDB makers is portability, usability without a tether, and better high ISO. None of which is needed in the studio.



Feb 15, 2007 at 02:50 PM
RJJR
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p.101 #4 · 'Un-Official' pre-PMA Rumor Thread


halie wrote:
An eagle's eye can see a rabbit two miles away.


I can see Saturn at several hundred million miles away...at night even.




Feb 15, 2007 at 02:54 PM
IFeito
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p.101 #5 · 'Un-Official' pre-PMA Rumor Thread


Well yes, but Saturn is only a gazillion times bigger than a rabbit!


Feb 15, 2007 at 03:20 PM
RJJR
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p.101 #6 · 'Un-Official' pre-PMA Rumor Thread


IFeito wrote:
Well yes, but Saturn is only a gazillion times bigger than a rabbit!


I bet the rabbit subtends a larger angle at a couple of miles than Saturn does at several hundred million miles.




Feb 15, 2007 at 03:47 PM
timbop
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p.101 #7 · 'Un-Official' pre-PMA Rumor Thread


RJJR wrote:
I bet the rabbit subtends a larger angle at a couple of miles than Saturn does at several hundred million miles.



A shiny white dot on a completely black background is a lot more contrasty and easier to see than a brown rabbit on a brown and green background.



Feb 15, 2007 at 03:53 PM
vknight
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p.101 #8 · 'Un-Official' pre-PMA Rumor Thread


actually Saturn was 821,190,000 miles from earth on a certain day... http://www.windows.ucar.edu/tour/link=/kids_space/distance.html

The question is what kind of capture would one get with a Big Erwin and one of those new lenses (the 800 DO?) ?

My this thread is entertaining, I will miss it when it is OBE.

Vann



Feb 15, 2007 at 03:53 PM
RJJR
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p.101 #9 · 'Un-Official' pre-PMA Rumor Thread


timbop wrote:
A shiny white dot on a completely black background is a lot more contrasty and easier to see than a brown rabbit on a brown and green background.


It's still only reflected sunlight (that's why I didn't choose a star, the closest of which is over 5 lightyears away but it can still be seen). The rabbit's motion against the background is more important than contrast for it to stand out to the eagle. That's why they're still eagle food inspite of their natural camoflage.

Besides, the eagles entire being is programmed for survival based on spotting that running rabbit and other prey. I don't depend on spotting Saturn for anything.




Feb 15, 2007 at 04:03 PM
DeanHeart
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p.101 #10 · 'Un-Official' pre-PMA Rumor Thread


Last week I saw a rabbit on saturn.


Feb 15, 2007 at 04:14 PM
Hrow
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p.101 #11 · 'Un-Official' pre-PMA Rumor Thread


IFeito wrote:
Well yes, but Saturn is only a gazillion times bigger than a rabbit!


Kinda depends on the size of the rabibt doesn't it? If it is a baby rabbit it might be two gazillion times as large or if it is a big honkin rabbit it might only be a half a gazillion. We need to be very accurate when carrying on absurd conversations or run the risk that they will become valueless.



Feb 15, 2007 at 04:17 PM
vachss
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p.101 #12 · 'Un-Official' pre-PMA Rumor Thread


RJJR wrote:
I bet the rabbit subtends a larger angle at a couple of miles than Saturn does at several hundred million miles.



Just to show that we are indeed just a bunch of geeks on this forum with nothing better to do...

Saturn subtends (at perigee): 1.2 e5 km / 1.35 e9 km = 0.9 e-4 rad

If we generously say a rabbit is 1 foot tall then at two miles it subtends: 1 foot / 10,560 ft = just about exactly the same 0.9 e-4 rad.

what a coincidence.

we may now return to random rumour rants...



Feb 15, 2007 at 04:31 PM
mudmutt
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p.101 #13 · 'Un-Official' pre-PMA Rumor Thread


Last week I saw a rabbit on saturn.

Maybe he should have taken that left turn at Albuquerque.

(I've really added nothing meaningful to this entire thread)



Feb 15, 2007 at 04:35 PM
Strid3r
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p.101 #14 · 'Un-Official' pre-PMA Rumor Thread





Feb 15, 2007 at 04:47 PM
Hrow
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p.101 #15 · 'Un-Official' pre-PMA Rumor Thread


vachss wrote:
Just to show that we are indeed just a bunch of geeks on this forum with nothing better to do...

Saturn subtends (at perigee): 1.2 e5 km / 1.35 e9 km = 0.9 e-4 rad

If we generously say a rabbit is 1 foot tall then at two miles it subtends: 1 foot / 10,560 ft = just about exactly the same 0.9 e-4 rad.

what a coincidence.

we may now return to random rumour rants...



There you have it, irrefutable proof that a rabbit is as big as Saturn.



Feb 15, 2007 at 04:50 PM
sskoutas
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p.101 #16 · 'Un-Official' pre-PMA Rumor Thread


Hrow wrote:
Kinda depends on the size of the rabibt doesn't it? If it is a baby rabbit it might be two gazillion times as large or if it is a big honkin rabbit it might only be a half a gazillion. We need to be very accurate when carrying on absurd conversations or run the risk that they will become valueless.


Brings the age old question to mind... "Is that an African Swallow or a European Swallow?"





Feb 15, 2007 at 05:03 PM
Lotusm50
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p.101 #17 · 'Un-Official' pre-PMA Rumor Thread


mudmutt wrote:
Maybe he should have taken that left turn at Albuquerque.

(I've really added nothing meaningful to this entire thread)


Why should you be any different? ;-)



Feb 15, 2007 at 05:08 PM
Andrew Dale
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p.101 #18 · 'Un-Official' pre-PMA Rumor Thread


But African Swallows aren't migratory.


Feb 15, 2007 at 05:14 PM
Philippe Arnez
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p.101 #19 · 'Un-Official' pre-PMA Rumor Thread


Come on Canon, throw us a 'leak' here!

These rabbit, Saturn, Swallow etc. discussions are killing me...



I want to believe: 5D Mark II (aka Erwin)



Feb 15, 2007 at 05:21 PM
RJJR
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p.101 #20 · 'Un-Official' pre-PMA Rumor Thread


vachss wrote:
Just to show that we are indeed just a bunch of geeks on this forum with nothing better to do...

Saturn subtends (at perigee): 1.2 e5 km / 1.35 e9 km = 0.9 e-4 rad

If we generously say a rabbit is 1 foot tall then at two miles it subtends: 1 foot / 10,560 ft = just about exactly the same 0.9 e-4 rad.

what a coincidence.


So then, Saturn is about 394 Mega-rabbits in diameter.

That's all I wanted to know.





Feb 15, 2007 at 05:21 PM
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