Lens Recommendation

TimurCivan said:
But dont forget its realtionship to FOV. so in a way sensor size is Somewhat realted.
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Agreed, somewhat. The sensor size is related to DOF in that different sized sensors require different focal length lenses (OR distances from the subject) to achieve an equal subject size within the frame. Of course, changing the focal length or distance from the subject alters the DOF (or apparent DOF).

But, one could also argue that shutter speed and ISO is related to DOF, since changing either will require a change in the aperture (to achieve the same exposure)... which would then change the DOF.

I guess the point is that a 50mm lens set at f/2.8, 5 feet from a subject will have the same DOF no matter what size the sensor is.
:beer:
 
Right. As you can observe even 1/3" cameras have a nice DOF when it comes to shoot small items like cups, insects, model trains etc.

But that doesn't help at all when you have to shoot real actors. Then in most cases you are screwed with a 1/3" camera simply because a human head is so much bigger...
So we should refer in this discussion to a real world scenario with common objects like an actor's head.

Generally with a 2/3" you can achieve a quite shallow DOF but at the expenses of perspective - you still have to use a lot of focal length and thus the image looks somewhat "flat".

So I suppose that a prime for 2/3" cameras should create the shallowest DOF possible with a 2/3" sensor but I can´t tell how strong the effect of the additional f-stops would be.
 
 
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pdsage10 said:
I am considering getting one of these, but does anyone know if there is a lense mount adapter that will let me use my slr canon lenses? I know that the camera is a bayonet mount. Who makes or sells an adapter like this?
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Anyone?
 
You might want to contact Schneider Optics. I know, back when they were Century Precision Optics, they used to carry Nikon to B4 adapters.

Be aware that adding SLR lenses to your camera (if possible) will open up a whole new can of worms.
 
Kenn Christenson said:
You might want to contact Schneider Optics. I know, back when they were Century Precision Optics, they used to carry Nikon to B4 adapters.

Be aware that adding SLR lenses to your camera (if possible) will open up a whole new can of worms.
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Can of worms? Why? The Red one is going to be available with an option for SLR lenses. So why would using them on a 2/3 ccd camera be a problem?
 
here is a good explanantion from wiki

The image format size also will affect the depth of field. The larger the format size, the longer a lens will need to be to capture the same framing as a smaller format. In motion pictures, for example, a frame with a 12 degree horizontal field of view will require a 50 mm lens on 16 mm film, a 100 mm lens on 35 mm film, and a 250 mm lens on 65 mm film. Conversely, using the same focal length lens with each of these formats will yield a progressively wider image as the film format gets larger: a 50 mm lens has a horizontal field of view of 12 degrees on 16 mm film, 23.6 degrees on 35 mm film, and 55.6 degrees on 65 mm film. What this all means is that because the larger formats require longer lenses than the smaller ones, they will accordingly have a smaller depth of field. Therefore, compensations in exposure, framing, or subject distance need to be made in order to make one format look like it was filmed in another format.
 
pdsage10 said:
Can of worms? Why? The Red one is going to be available with an option for SLR lenses. So why would using them on a 2/3 ccd camera be a problem?
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Because SLR lenses do not have the long rear focal distance of video lenses and cannot be used on prism-based cameras without some sort of relay optics or aerial image converter. - That's what I meant by a can of worms.:thumbsup:

The Red One camera uses a single CMOS imager and is, therefore, able to (with a mount adapter, of course) use SLR lenses. Conversely, take a look at the price of the B4 lens adapter for Red. The B4 adapter has to take the long rear focal distance of a B4 lens and adapt it for the single, closer, imager.
 
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