Q? Lenses-

[sbcooler]

Question about how things will look thru scarlet?

If you are comparing an image with a 2/3" sensor (say 16mm) and comparing to a FF35 (35.8mm sensor), it would seem like the crop factor would be 2.25? Is that about correct? And if that is correct say and we have a lense that is say a fixed focal length of 100mm on both cams...that would mean the Scarlet would produce an image that looks like it's 2.25 times closer to me than the true FF35 sensor? Is this correct purely from how the image will look at these same focal lengths?

Lastly can you put different lenses on a Scarlet say (or still camera) regardless of the sensor inside the camera...and by doing that does that degrade the image at all? Is glass for lenses made differently (thicker,shape) for 2/3" sensor vs a 35mm sensor?

New at this sorry all-

 

[Stephen Williams]

Hi,

A bigger sensor will produce a very sharp image with a lower resoloution lens. Smaller sensors need a much higher resoloution lens to achieve the same result. Thats why digi primes are $30,000 each.

Stephen

 

[sbcooler]

When you say a lower resolution lense, do you mean a lower quality lense that is not so smooth and perfect? Lenses as far as I know don't have a resolution, like a computer screen or tv would have. So I guess you are saying the resolution of a lense means how good the cut is (fewer abberations)?

Now if you put the same high quality glass on both cameras with the 2 different sensors, would the larger sensor be able to resolve more detail? I assume the answer is yes to that, all other things being equal. Also will the larger sensor be able to resolve more low light detail as well, assuming all glass and everything else is identical? And how much more detail...in a still shot I am sure you can blow it up and see the difference, but in a moving image (good frame rate of say 24 or up), I wonder if you'd be able to tell the difference much?

If the difference is impercetable in moving images (impercetable so that experts watching 2 videos of a high quality video everything being the same except 2/3" sensor vs FF35 sensor), then outside of blowing up the moving images and cropping in post, it would seem to be overkill to have a FF35 mm sensor for most uses. Again, unless that detail is perceptible.

The bigger difference maybe is DOF and having the ability to go for shallower depth of field in some situations with the bigger sensor. The negative though is you get less zoom on the bigger sensor for the same focal lengths, so it would cost way more for big zooms I'd guess being that you have to buy a ton more glass and larger mm lense to get the same effect.

Now if the resolution is so much better on a FF35, you could digitally blow up the shot say by 2.25 times or so and get the same "zoomed" perspective? But I find it hard to believe a FF35 would have 400% more resolved resolution than a 2/3 sensor..because it would take just over 400% zoomed in to equal the zoom of the 2/3" sensor.

Is this making any sense?

Just curiuos if I am understanding it!

 

[Kenneth Elkington]

Now if you put the same high quality glass on both cameras with the 2 different sensors, would the larger sensor be able to resolve more detail? I assume the answer is yes to that, all other things being equal. Also will the larger sensor be able to resolve more low light detail as well, assuming all glass and everything else is identical? And how much more detail...in a still shot I am sure you can blow it up and see the difference, but in a moving image (good frame rate of say 24 or up), I wonder if you'd be able to tell the difference much?

Well assuming the sensors are using the same sensor technology, and each sensor element(individual pixels) is the same size the only difference is going to be that the 2/3" is cropped. Under normal circumstances, where you would be framing the shot in the same way though, the FF sensor is going to have larger sensor elements, lowering noise, as well as higher resolution while covering the same picture area. The pronunciation of difference is ultimately going to depend on output format, lighting conditions...etc. but the FF sensor is going to produce a superior picture with more headroom for color grading, processing and vfx.