Kelvin Xu

Hi Cinematography, I am studying the Cineo Maverick for our laboratory and wonder whether the Ethercon RJ45 can directly be connected and controlled to a LAN network? We wish to automate some testing procedures by controlling the brightness. We have no problem with LAN programming. Best Regards, Kelvin

Thank you Nathan. I understand that the DMX interface well however we faced issues with USB camera modules, even though different manufacturers of USB camera modules use the same USB interface from PC perspective, but we did get different DLL from manufacturers. Do DMX have the similar issues? Does a user expect a DMX software out there to work with any DMX controller boxes in the market? If so, I could get a DMX software which allows API or command line modes.

Thank you for the detailed explanation. It's very useful.

What kind of job or tasks in cinematography can one outsource to a low cost country, assuming good credibility of facilitators and no language barriers in the low cost country, via the internet? I think the role of such facilitator is interesting.

Thank you all for the replies. I now understand that the linearity of the filters. Will this idea work in order to save me some funds? Assume when I purchase two LED lights with bundled softbox and color gels to be attached to the front of the softbox. Instead of buying two sets of the gels, I could just buy one set, cut the gels into pieces and clip to the front of the lights, the surface area of which is much smaller. (I can live with lessened softness from the arrangement) http://www.videolighting.com/gels-filters.html

Hi Cinematography, When one applies color filtering gels on a light source, is the filtering capability affected by the intensity of the light it's intended to filter out? Let's say when a filter claims 40% reduction in a 500~550nm wave length, and the light at that region is 100lux then the result would be 60 lux. When I pump up the intensity by 10, will it reduce from 1000lux to 600lux? Will it saturate? Thank you. Kelvin

Hi cinematography, We are testing and grading large number of CMOS sensors for our microscope applications. The basic idea is to have a PC to automatically control a 3-lights LED system to illuminate a sensor at various color temperature, brightness, hues etc, and take a large number of pictures for post processing. We understand the DMX manufacturers tend to have their own GUI and App, but manual operation is not efficient. Are there any DMX manufacturers supporting API or scripts to automate it? Besides here, where else online can I go to look for such information? Thank you!

Hi cinematography, We are testing and grading large number of CMOS sensors for our microscope applications. The basic idea is to have a PC to automatically control a 3-lights LED system to illuminate a sensor at various color temperature, brightness, hues etc, and take a large number of pictures for post processing. We understand the DMX manufacturers tend to have their own GUI and App, but manual operation is not efficient. Are there any DMX manufacturers supporting API or scripts to automate it? Besides here, where else online can I go to look for such information? Thank you!

I am new to this area so asking a lot of questions may get me to know new ideas and methods. I understand Kino has a good portfolio of lights.

Thank you John for the explanation.

In sound synthesis we generate sound by combining multiple amplitude , frequency and phase. If we carefully select a number of single color LEDs, each with controllable brightness, then put through a light pipe to bounce/mix the light and a diffuser at the exit. Would that work? Are there linear light guide which could bounce and distribute light from a single point source to a line?

Thank you Phil. That explains metamerism clearly. Just to check whether my observation/monitor is correct, in these two images, the right samples appear slightly more saturated than the left? (This question has nothing to do with the explanation) http://cdn.redsharknews.com/images/rsn_metamerism_fig1.png http://cdn.redsharknews.com/images/rsn_metamerism_fig2.png

I am aware of the metamerism which means two light sources of different spectrum may cause a subject to exhibit the same color. What is the parameter to differentiate the two light sources? For an LED and a florescent lamp to have different spectrum but of same 6500K CCT, how can one declare which is closer/accurate to CIE D65? What are the typical materials used to make filter gels? Can one mix or stack layers of such materials in layers of plastic films to convert a 6500K LED closer to CIE D65? Thank you.

What are the materials, for example transparent films, or liquid, to absorb and reduce energy of the blue components in LED light outputs, especially the lower wavelength portion? Where can I buy small samples of that for color manipulation experiments? I noticed the spectrum of LED lights tend to have a trough between blue and green. Are there any techniques to make the spectrum of LED lights more continuous? Let's assume the color accuracy is not in important. Thank you!

Thank you Phil. Based on the manufacturer's datasheet, the TLCI of 97~99 sounds good enough for our purpose. That being said, it's claim by manufacturer only. Positive feedback from the industry can be a good tool to convinces the finance controllers, that could eliminate the cost of a spectrometer. Besides color accuracy, any feedback, good or bad would be useful for a prospect buyer.