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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Dec. 3rd responses here...

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Andrew McCarrick said:
It has to with how much light is reflected off of an object... the closer the object, the more light it reflects back into the lense (and actually reflects light back in at multiple points.). The more you stop down the iris, the less points of light an object emits flow through the lense.

For example, you have two objects, object A at 2 feet and object B at 8 feet, point A of a object A emits light in multiple directions at one time. A lens captures more then just one of those incoming beams of light from Point A from object A. If you close the iris up, you have less light beams coming in from point A of object A. Thus object B, which is further away only now reflects the equivalent amount of light (since it's further away) as object A because you stoped down the iris.

Basically Object A over powers Object B with the amount of light reflected until you stop down the iris, bring down the brightness of object A; Which brings up the brightness (and therefore focus) of object B.
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What are you smoking Andrew? I want some!
 
I have had that same question for a while... where does anyone recommend going for this explanation aside from wiki...
sorry to keep off topic...i know it is the wrong forum...
 
Here's a rare post from me... :)

I'll be honest... the specs for these cameras are pretty fantastic. It's a bummer that I'll have to wait until 2010 to get my 645... but there'll be a lot of jobs in between now and then to pay for the sucker.

Having done the math on the camera's resolutions, it would appear that the 24.89mm x 13.9mm aperture on the 645 is roughly 3.7K. That puts its true Super 35mm max frame rate at 150fps. So it's a pocket-sized sync sound 435 Xtreme with free Vision 1 DR film forever.

And if I shoot with the whole sensor? The 6 x 4.5 sensor size is closer to 70mm film than the RED ONE's 4K area is to Super 35mm film. In other words... it'll pass.

Sold.

Now stop looking at me like that.
 
Buying a RED ONE before Summer 2009...

Buying a RED ONE before Summer 2009...

Hi,

Believe this was asked in another thread as well, and might well qualify for a FAQ.

Is there a cutoff date for the EPIC-X upgrade offer for new RED ONE buyers? I'm assuming not, but want the official word - it'd make the difference between getting a RED ONE now or holding off.

Also, has anyone discussed accessory compatibility between RED ONE and the EPIC X upgrade?

Thanks for any info!
 
znelson said:
I wish I could understand why DOF gets shallower when more light enters the camera and broader when less light enters the camera. How does quantity of light control how in or out of focus something is based on it's distance? I'd think something would get darker the farther away it is, not more out of focus.
Click to expand...

For a given bundle of rays entering the lens from a given point a wide aperture produces a cone of rays that hit the focal plane as a tiny focused point known as the circle of confusion (I.e. the smallest resolvable dot). If you move the focal plane forward or backward a tiny amount the circle of confusion becomes quite large, (I.e. starts to produce a blurry image) this is because the focal plane intersects this cone of rays at a different place now. The wide aperture produces a wide angle cone of rays (or think of it as a dumpy cone), so a small shift in focal plane makes a large difference in the size of the circle produced by intersecting the cone of rays with the focal plane (because the effective apex angle of the cone is large). If on the other hand you stop down to a small aperture the cone of rays becomes much narrower (I.e. a pointy cone rather than a dumpy cone). If you then shift your focal plane forward or back by the same amounts as before you will find that the circle of confusion is much smaller (I.e. the size of the circle produced by intersecting the cone with a flat plane is smaller because the apex angle of the cone is much smaller or narrower). These focal plane shifts translate into equivalent depths of field. Narrow bundles of rays from a small aperture produce greater depths of field as the circle of confusion remains small.

I’m sure that’s clear as mud but without diagrams that’s the best I can badly explain in words.
 
facetmedia said:
It seems most of the breakthroughs were related to higher fps recording. I can't remember the previously listed specs... anyone got the older specs so I could do a comparison?
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Here you go bro.
 
I will wire money for the epic x upgrade as soon as we can get in line. seriously. Put it in the store.

once again, thank you red team.
 
Eric/VERAXYZ said:
For a given bundle of rays entering the lens from a given point a wide aperture produces a cone of rays that hit the focal plane as a tiny focused point known as the circle of confusion (I.e. the smallest resolvable dot). If you move the focal plane forward or backward a tiny amount the circle of confusion becomes quite large, (I.e. starts to produce a blurry image) this is because the focal plane intersects this cone of rays at a different place now. The wide aperture produces a wide angle cone of rays (or think of it as a dumpy cone), so a small shift in focal plane makes a large difference in the size of the circle produced by intersecting the cone of rays with the focal plane (because the effective apex angle of the cone is large). If on the other hand you stop down to a small aperture the cone of rays becomes much narrower (I.e. a pointy cone rather than a dumpy cone). If you then shift your focal plane forward or back by the same amounts as before you will find that the circle of confusion is much smaller (I.e. the size of the circle produced by intersecting the cone with a flat plane is smaller because the apex angle of the cone is much smaller or narrower). These focal plane shifts translate into equivalent depths of field. Narrow bundles of rays from a small aperture produce greater depths of field as the circle of confusion remains small.

I’m sure that’s clear as mud but without diagrams that’s the best I can badly explain in words.
Click to expand...

Great explanation...best i have heard...
Thanks
 
Eric/VERAXYZ said:
For a given bundle of rays entering the lens from a given point a wide aperture produces a cone of rays that hit the focal plane as a tiny focused point known as the circle of confusion (I.e. the smallest resolvable dot). If you move the focal plane forward or backward a tiny amount the circle of confusion becomes quite large, (I.e. starts to produce a blurry image) this is because the focal plane intersects this cone of rays at a different place now. The wide aperture produces a wide angle cone of rays (or think of it as a dumpy cone), so a small shift in focal plane makes a large difference in the size of the circle produced by intersecting the cone of rays with the focal plane (because the effective apex angle of the cone is large). If on the other hand you stop down to a small aperture the cone of rays becomes much narrower (I.e. a pointy cone rather than a dumpy cone). If you then shift your focal plane forward or back by the same amounts as before you will find that the circle of confusion is much smaller (I.e. the size of the circle produced by intersecting the cone with a flat plane is smaller because the apex angle of the cone is much smaller or narrower). These focal plane shifts translate into equivalent depths of field. Narrow bundles of rays from a small aperture produce greater depths of field as the circle of confusion remains small.

I’m sure that’s clear as mud but without diagrams that’s the best I can badly explain in words.
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Thanks Eric, I think you totally nailed the explanation. I come from a lighting background so I totally understand the cone of light and CoC.

I guess the reason why higher f-stops results in a broader DOF is because the rays are more parallel (ie. more equal) to each other as they strike the film (or sensor). Whereas lower f-stops allow light from more acute angles to enter the camera.
 
Maybe this is part of the confusion? Jim said this in today's post and it seems like you can put a Monstro sensor into the Red One if you look at it from the perspective of taking the $4500 sensor upgrade only path. And then the next step is to get the Monstro sensor into the Red One. Don't get me wrong, I'm not trying to cause trouble, just trying to clarify. Is this reading the following wrong or right?

We also said we would offer a RED ONE sensor upgrade to keep it current in a world of ever-improving electronics. We have kept that promise with a Mysterium-X upgrade path when it is finished, then to the Monstro sensor which will follow.
 
lens2film said:
Here you go bro.
Click to expand...

Thank you. Did the previous announcement get deleted? I deleted my post thinking that the thread must still be around. Anyone got the page where the fps specs were listed?
 
znelson said:
I wish I could understand why DOF gets shallower when more light enters the camera and broader when less light enters the camera. How does quantity of light control how in or out of focus something is based on it's distance? I'd think something would get darker the farther away it is, not more out of focus.
Click to expand...

DOF has everything to do with the size of the aperture in the lens. With a closed down aperture (smaller hole) the DOF is large. One might have to stop down the aperture in a bright situation to limit the amount of light coming in the lens. With a large aperture, focusing becomes more critical because the hole is large and all of the light rays coming through the hole spread out and cause blurring (shallow depth of field). With a small aperture the light rays aren't able to spread out as much and therefore more of the picture tends to be in focus. Make sense?
 
redsparks said:
DOF has everything to do with the size of the aperture in the lens. With a closed down aperture (smaller hole) the DOF is large. One might have to stop down the aperture in a bright situation to limit the amount of light coming in the lens. With a large aperture, focusing becomes more critical because the hole is large and all of the light rays coming through the hole spread out and cause blurring (shallow depth of field). With a small aperture the light rays aren't able to spread out as much and therefore more of the picture tends to be in focus. Make sense?
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Yep - that's pretty much what I was saying in my previous post about the angle of the rays as they enter the camera under both scenarios. Thanks for confirming!
 
Epic X - very clean and direct upgrade. Very generous I believe.

Thanks Jim and all at Red.
 
facetmedia said:
Thank you. Did the previous announcement get deleted? I deleted my post thinking that the thread must still be around. Anyone got the page where the fps specs were listed?
Click to expand...

Here you go...(again) bro.
 
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