Imatest Documentation

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Imatest Documentation sharpening with thresholds— nearly universal in consumer cameras. Charts with at least two contrast ratios: 20 and 2 (or lower) are recommended for characterizing cameras. Gamma Choices: 2.5, 2.2, 2.0, 1.8, 1.5, 1.0 You should use the value of gamma for your typical color space and workflow (2.2 is standard for Windows; 1.8 for older Mac systems). The default value is 2.2. Gamma affects the accuracy of sine patterns and the actual printed contrast ratio: it must be the same value used for printing (the value of the color space, i.e., 2.2 for Adobe RGB (1998), if color management is used) to get the correct contrast ratio. Ink spread compensation corrects for ink spread (or "dot gain") in the Log frequency chart. (The Star chart may be added later.) The best value has to be determined experimentally. Output figure The output figure contains an image of the test chart. It is not anti-aliased, hence lines may be missing (in Grid) or curious aliasing patterns may appear, visible below. Only the circle in the middle is real-- all the others are the result of aliasing. This figure is not intended for printing. To print a chart open the image file (C:\Imatest\Data_distortion \chart_temp.tif in the example below) in an Image editor and print it from the editor. A high quality (photographic) inkjet printer is recommended. The best way to print the charts is to convert the TIFF files from black & white into 24-bit color and print them using a color-managed workflow with ICC profiles. Manufacturer-supplied profiles are usually sufficient; custom profiles may be better when tonal values are critical. Preview image of Zone plate showing extreme Moiré You can zoom in on the chart by selecting an area or clicking on a point of interest. Double-clicking restores the complete image. 368 of 451
Imatest Documentation Preview image of Zone plate, zoomed in 369 of 451
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Imatest Documentation © 2009 Imate
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Imatest Documentation Using SFRplus
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Imatest Documentation Image Quality
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Imatest Documentation tilted (about
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Imatest Documentation MTF50 in Line
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Imatest Documentation SQF Subjectiv
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Imatest Documentation RAW converter
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Imatest Documentation cm (4 inch) h
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Imatest Documentation CSF( f ) = 2.
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Imatest Documentation correlate wit
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Imatest Documentation Since luminan
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Imatest Documentation The formula f
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Imatest Documentation The image to
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Imatest Documentation Sharpness com
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Imatest Documentation (DPR) Canon E
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Imatest Documentation but their noi
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Imatest Documentation The average t
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Imatest Documentation Chromatic abe
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Imatest Documentation Veiling glare
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Imatest Documentation A Kodak Q-13
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Imatest Documentation with UV filte
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Imatest Documentation Czajkowski' r
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Imatest Documentation P_Rm = O_Rm*A
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Imatest Documentation Split view, s
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Imatest Documentation ISO Sensitivi
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Imatest Documentation Multicharts T
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Imatest Documentation σ 2 = Σ (ti
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Imatest Documentation Target size C
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Imatest Documentation Level the tar
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Imatest Documentation Kodak Q-14 St
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Imatest Documentation in the Imates
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Imatest Documentation samples (fold
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Imatest Documentation Using Imatest
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Imatest Documentation About RAW fil
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Imatest Documentation Options I for
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Imatest Documentation Special user
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Imatest Documentation CSV files- Ex
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Imatest Documentation RAW files RAW
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Imatest Documentation dcraw The ori
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Imatest Documentation Tripod and ac
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Imatest Documentation Targets Chart
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Imatest Documentation Left of cente
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Imatest Documentation Rope trick (f
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Imatest Documentation Distortion ta
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Imatest Documentation If you fail t
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Imatest Documentation Diagnostics r
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Imatest Documentation A horizontal
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Imatest Documentation the edges pri
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Imatest Documentation The camera mu
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Imatest Documentation Epson 2200 Pr
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Imatest Documentation Using SFR Par
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Imatest Documentation ROI fine adju
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Imatest Documentation Pixel size ha
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Imatest Documentation contrast in h
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Imatest Documentation Two precautio
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Imatest Documentation The PNG files
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Imatest Documentation nroi = 9 nwid
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Imatest Documentation An optional .
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Imatest Documentation SFR results:
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Imatest Documentation Right column
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Imatest Documentation Right: Input
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Imatest Documentation Below the plo
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Imatest Documentation Multi-ROI 2D
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Imatest Documentation The Legend at
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Imatest Documentation MTF50 (Cy/Pxl
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Imatest Documentation Summary plot
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Imatest Documentation 3D Plot for M
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Imatest Documentation The standard
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Imatest Documentation SFRplus setup
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Imatest Documentation SFRplus setti
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Imatest Documentation Gamma Gamma i
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Imatest Documentation Weighted MTF5
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Imatest Documentation This display
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Imatest Documentation space of the
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Imatest Documentation window, shown
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Imatest Documentation It's easy to
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Imatest Documentation Using Reschar
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Imatest Documentation Select an ima
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Imatest Documentation MTF contours
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Imatest Documentation SFRplus SFR H
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Imatest Documentation Log F-Contras
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Imatest Documentation Log Frequency
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Imatest Documentation Color moiré
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Imatest Documentation The display o
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Imatest Documentation Downloadable
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Imatest Documentation If Express mo
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Imatest Documentation The display o
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Imatest Documentation The differenc
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Imatest Documentation Star Chart An
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Imatest Documentation ROI fine adju
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Imatest Documentation MTF (linear f
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Imatest Documentation MTF Compare C
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Imatest Documentation MTF Compare r
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Imatest Documentation Comparison of
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Imatest Documentation Batchview Pos
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Imatest Documentation Rescharts SFR
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Imatest Documentation Running Batch
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Imatest Documentation Center mean O
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Imatest Documentation standard mono
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Imatest Documentation Lighting Inte
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Imatest Documentation Run Imatest S
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Imatest Documentation SFRplus setup
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Imatest Documentation SFRplus setti
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Imatest Documentation Additional pa
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Imatest Documentation Output files
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Imatest Documentation Lens-style MT
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Imatest Documentation File formats
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Imatest Documentation Purchase or d
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Imatest Documentation Sharpness tar
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Imatest Documentation Proper exposu
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Imatest Documentation If you answer
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Imatest Documentation SFR input dia
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Imatest Documentation Figures (.PNG
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Imatest Documentation contrast imag
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Imatest Documentation Chromatic Abe
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Imatest Documentation QA-61 ISO-160
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Imatest Documentation Stepchart inp
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Imatest Documentation First Figure:
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Imatest Documentation A camera's (o
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Imatest Documentation The total dyn
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Imatest Documentation Gamc is typic
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Imatest Documentation ISO-15739 Noi
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Imatest Documentation You can enter
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Imatest Documentation Results If RA
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Imatest Documentation Dynamic range
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Imatest Documentation Using Colorch
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Imatest Documentation horizontal fi
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Imatest Documentation Colorcheck in
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Imatest Documentation The first fig
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Imatest Documentation The backgroun
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Imatest Documentation saturated gre
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Imatest Documentation (blank line)
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Imatest Documentation CMC An early
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Imatest Documentation The the equat
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Imatest Documentation Multicharts o
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Imatest Documentation If you select
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Imatest Documentation The Zoom chec
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Imatest Documentation + b* Pseudoco
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Imatest Documentation Shows the gra
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Imatest Documentation 9. Corr Image
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Imatest Documentation Appendix Cros
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Imatest Documentation Sorted by tes
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Imatest Documentation Distortion Un
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Imatest Documentation Create Scalab
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Imatest Documentation f-stop . Gamm
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Imatest Documentation Glosario en E
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Imatest Documentation Troubleshooti
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Imatest Documentation You can selec
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Imatest Documentation Imatest Chang
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Imatest Documentation below, next t
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Imatest Documentation Jan. 6, 2007
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Imatest Documentation Nov. 6, 2005
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Imatest Documentation Sept. 11, 200
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Imatest Documentation XML Changes N
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Imatest Documentation License The I
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Imatest Documentation 11. GENERAL T
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