Camera and Display RGB question

[rp895]

Hello,

I have somewhat of a technical question and was hoping you would be able to help me. I have a display that is 852 (x3) x 600. This means that that there are 852 x 600 of the red, blue and green filtered pixels. Say however that I am looking at a completely red object, thus only red light falls on detector, and detected by only red filters. That means only red pixels on display will be on.
However, if in another case, white light falls and is detected by all three RGB pixels, and on the display as well, all three RGB pixels will be on. Does that mean that for a red object, resolution is effectively decreased by 3 compared to white light?

I appreciate any input you have!

 

[russ_watters]

It would be if the camera software were capable of outputting 1704x1200 and the color were an even white and the filters had the same bandwidth...

I was very disappointed when I found out that my http://www.meade.com/dsi_ii/index.html" had a 510x492 ccd with a filter grid on it (as opposed to a 1010x984 ccd with a grid and an output of 510x492 in color). They advertise the ccd resolution, not the effective resolution. Incidentally, since the filter grid is 2x2, they double-up on the green. When I get home, I'll post an example image...

This is why better astrophotos are shot with full-size filters, a monochrome chip, and multiple exposures.

 

[ravenprp]

Hello,

Thank you for reaching out with your question. The answer to your question depends on the specific camera and display setup you are using. In general, the resolution of a camera or display is determined by the number of individual pixels, not the number of color channels. So for your display with 852 x 600 pixels, the resolution would remain the same regardless of whether a red or white object is being displayed.

However, the color accuracy and detail may be affected by the different wavelengths of light being detected and displayed. In your example, the red object would only be displayed using the red pixels, so the color accuracy may be lower compared to a white object which would be displayed using all three RGB pixels.

Ultimately, the resolution of a display is not affected by the color of the object being displayed. I hope this helps clarify your question. Let me know if you have any further questions or need additional clarification. Thank you.