Eye & Resolution Charts of various types.
Originally downloaded from http://www.i-see.org/eyecharts.html
I make no claim of authorship or ownership just think it's a really great file from a really great web page!
This chart was created to be a simple one page vision check.
Viewed from 20 feet away, the row with the smallest lines that can be clearly distinguished, not gray blurs, would be your visually acuity.
This chart was created to be a simple one page evaluation of astigmatism, a quantified variable astigmatic chart.
Viewed from 20 feet away, the point the lines can no longer be distinguished, gray blurs, would be your visually acuity for that angle.
9:00=0 degrees - 8:00=30 degrees - 7:00=60 degrees - 6:00=90 degrees - 5:00=120 degrees - 4:00=150 degrees - 3:00=180 degrees
If you wear corrective lenses it may be interesting to you to view the chart at differnt angles through various parts of your eyewear.
To test some aspects of weak vision a color version, orange-ish red and turquoise, with the color saturation, light red and light turquoise, at approximately 50% of the normal visual sensativity is available at:
http://www.ezend.com/vision/EYE-CHART-STAR-COLOR.pdf
This chart was downloaded.
This is similar to the USAF 1951 chart to use for various resolution tests. Printing, cameras, monitors, binoculars, vision and etc...
Each "1" area, group, is half the size of the previous "1" group with the largest "1" set being 8mm lines and spaces with printing at the set size.
8mm lines, 4mm lines,Group "-2" 2mm lines, Group "-1" 1mm lines, Group "0" .5mm lines, Group "1" .25mm lines, Group "2" .125mm lines, Group "3" .0625mm lines, Group "4" .03125mm lines, Group "5" 0.015625mm lines....
Refer to Edmond Optics for some more data on the 1951 USAF test pattern and other optical patterns they have available: http://www.edmundoptics.com/onlinecatalog/DisplayProduct.cfm?productid=1790
Select the "SPECIFICATIONS TABLE" tab for a chart with the GROUP and ELEMENTS of that group's resolution in line pairs/mm. This file goes all the way down to group 7. All you would need is a way to print it with good clarity at that resolution.
This chart was downloaded.
It is just a very nice basic chart to use for various resolution tests. Printing, cameras, monitors, binoculars, vision and etc...
This chart was downloaded.
It is just a very nice basic chart to use for various resolution tests. Printing, cameras, monitors, binoculars, vision and etc...
Downloaded from http://www.bealecorner.com/trv900/respat/index.html
This is a fantastic document to use for testing printer resolution. Their also has an instruction document and some other test pattern documents and information about them. This chart could also be used for checking the resolution of cameras, monitors, binoculars, vision and etc if the printed resolution is greater than the viewed resolution...
This chart was downloaded.
It is the new standard resolution pattern, ISO 12233 Resolution Chart. It has a new size for wide screen compatibility and features to test digital displays.
This chart was downloaded.
It is the old standard resolution pattern, EIA 1956, for testing resolution of various displays.
This chart was downloaded.
It is just a very nice basic chart to use for various resolution tests. Printing, cameras, monitors, binoculars, vision and etc...
Downloaded from http://focustestchart.com/chart.html
It is a very nice chart to use for testing depth of focus and focus point of a camera. This is especially revealing when used at various zoom settings and occasionally different lighting can impact focus.
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