DCP TIFFs

Intention: Provide materials which can help a technical or non-technical person judge changes in picture and sound quality without the use of meters.

That phrase means what it says – if the test equipment isn’t scheduled for the auditorium for another 6 months, is there a way to tell if the the contrast and color display is degrading. These TIFF slides are experiements to answer this question, and supply tools if it is possible.

All these TIFF plates are 4096 x 2160, 2020 color space with 16 bits of depthiness, unless otherwise mentioned. Sound files from the DCPs will get their own page, but don’t go looking for it now…

If you have some ideas for changes, to fix mistakes or add nuance, let us know…likely we can change the master for the better or post another version. Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
If you create something and would like it hosted on this site, please let us know. Read what the link says on the Creative Commons site. Generally, use them in your works, change as required. But please, 1) give attribution when use them either in commercial or non-commercial work, 2) provide a link to the original material and, 3) send a note to let us know what you changed.

Primary and Secondary Square Cones

Striking, and only useful if you are looking for striking. But a lot of time was spent on it, so only say nice things, please.

conical gradients Blk to white primaries and secondaries

 


Primary and Secondary Trumpets

Each of these components will be made available in a kit, but for right now, here they are I one chart.

LensTesting for DCinema!

 


Mach Band Effect Testing Plates

There is a whole series to download here. These were developed to learn whether the black of the masking curtains and the typical vignette of the picture cause the illusion of luminance shift.
Variation 1 on Mach Band Effect Testing

 


Horizontal and Vertical Lines – Black, against backgrounds, 2020, 4K

Black lines at every other position on the grid…and a variety of different primary and secondary backgrounds.

Black lines against primary and secondary backgrounds 2020 16 bit

 


Horizontal and Vertical Lines – Colored Lines, 2020, 4K

What is the difference to a projector or a LED wall between drawn black lines and backgrounds of colors…which actually fill in the alternate lines, right? …and drawing the colors as the lines and letting the editing program put in the background…or no background at all. You too can find out with these plates.

colored lines, horizontal and vertical

 


Color Plates, 2020, 4K

Primary and secondary color plates – Don’t need pictures of those here, do you? Just get them at the download site.

 


2 Percent

Hmmm – What shall we call this? It is derived from the CST chart that marks off 2% rectangles to begin with, and a bunch of circles drawn at the proper 10% points…then it got botched up with moving the color wheels to align with the corner to corner lines which actually serve no purpose…ok, toss in some focus squares …that’ll distract them. (This png is 709…get the real thing in 2020 and tell us how to make it better please.

Colors on a black background that also checks the sides in a colorful manner.

 


2 Percent, Black and White

Hmmm – What shall we call this? It was inspired by/is derived from, the CST chart that marks off 2% rectangles to begin with, and a bunch of circles drawn at the proper 10% points…then it got botched up with moving the color wheels to align with the corner to corner lines which actually serve no purpose…ok, toss in some focus squares …that’ll distract them. (This png is 709…get the real thing in 2020 and tell us how to make it better please.

Black and white Siemens Stars with several 2% rectangles.

 


CJ’s Favorite Distraction

Several variations with several colors going from full saturation to dark or white …and grey level tests too. A distraction because I keep refining it. Now with MTF marks – hope they work…haven’t tested them yet.

Black background with sharp lines and green cones
Green Cones with MTF lines and other designs

 


Vertical Meters 2.5 and 5% RGBGrey
This mission, if you choose to accept it, deals with “Where does the color end and only black exist?” Is 5% a usable meters for each color or is 2.5% needed for the brighter ones? The theory is that one can look at the meter and make a substantially objective judgement, record it on one of the checklists, and use the test again a week or month later to note if there are changes. (Wow! This PNG only begins to show a usable scale…download the TIFF file.)

Vertical meter of each primary color and black at 2 different luminance.

 


Dials for Contrast: 6%, 4.5%, 3%, 1.5% RGB and Greys, with and without tic marks.

This idea is similar, but with the gradient from 6% to 0% (as well as 4.5% and 3% and 1.5% to 0) on a dial. There is a version with a set of tic marks to note where the last point of seeable color is…and a version without. Why? Because it may be that one needs to spot the postition without the influence of the dial markings, then get the markings later. Experiment and report please.

RGB and Greys. 2020. 4K and 16 bits of depth for each color. All to see if we can get a subjective objective.

A dial with tic marks to find contrast...in this case, green

 


Trumpets

8 TIFFs of Trumpets. The ability to watch as lines get closer together. There are many variations…there are numbers in there somewhere. Experiment and report please.

RGB and Black. 2020. 4K and 16 bits of depth for each color. All to see if we can get a subjective objective.

trumpets on a scope screen

 


Circles and Stars

Circles and Stars and a few other things to stare at. And some fun while making the primaries turn into secondaries. Ya gotta love bluey yellow, no? The alternative TIFF uses outlines of the Siemens Stars for the center position, just to see what detail they hold. No idea if a 4K system can hold 48 spokes…let us know what you find please.

RGB and Black. 2020. 4K and 16 bits of depth for each color.

A number of testing ideas on one chart

 


Coming….Colors, Stripes, Dials, MoreMTF –
A crafted circle in a triangle in a rectangle with 3 primary colors all around