Two Test Tiff images for download

The first image is a 300 DPI scan of Gray Scale and Color Control Patches from the Kodak Color Dataguide CAT# 156 9136. I reduced this image form the original 10+Megabyte size to 2,112KB with Photoshop Elements 2.0. Current size is 640 X 1121 pixels print resolution is 300 dpi.

This is very old DataGuide, I bought this book sometime in the late 1970's. Original size is 5" X 8.5".

Right Click and Save Target As.
Color Patches

Readings for eyedropper info from Photoshop Elements 2.0.
5 by 5 average taken near the center of each patch. The exact readings vary around the patch.

GRAY PATCHES	COLOR PATCHES
0.1  R254 G254 B253	GREEN R35 G93 B64
0.4 R190 G192 B193	YELLOW R255 G249 B133
0.7 R125 G128 B129	RED R255 G88 B94
1.0 R90 G92 B93	MAGENTA R255 G90 B126
1.3 R58 G63 B64	PURPLE R43 G39 B99
1.6 R27 G31 B33	LIGHT BLUE (CYAN) R55 G124 B234
1.9 R6 G7 B8	BROWN LOOKS BLK R37 G32 B37
2.2 Varies 1-0 R1 G1 B1	BLACK R16 G19 B22

There is a stain on the top third of the 0.1 density gray patch. That is not the fault of the scan. The patch was coming unglued and the glue I used stained the patch.
To my eyes, this is as near to perfect as a scan can be. There is almost no change in density between the 2.2 and the 1.9 patch in the actual chart. If you look hard with a strong light you can see a difference.

 

The next Image is of a Macbeth ColorChecker. Scanned at 100 DPI then resized to 106.25 DPI to make a 8" X 10.908" image.

Right Click and Save Target As.
Macbeth ColorChecker

This scan looks a little dark which you can see in the white patch, but the black patch is not completely black.
The ColorChecker is cropped because the scanner bed in only 8.5" X 11.7" and the actual Macbeth ColorChecker is 13" X 9.25". The actual Macbeth ColorChecker is sized to fit a 35mm film frame. It has a 1:1.5 aspect ratio. The new Macbeth Colorcheckers are now 8.5" by 11" and sell for around $67.

Diagram of Chart

Dark  Skin	Light  Skin	Blue  Sky	Foliage	Blue  Flower	Bluish  Green
Orange	Purplish Blue	Moderate Red	Purple	Yellow Green	Orange Yellow
Blue	Green	Red	Yellow	Magenta	Cyan
White (.05)*	Neutral 8 (.23)*	Neutral 6.5 (.44)*	Neutral 5 (.70)*	Neutral 3.5 (1.05)*	Black (1.5)*