document.write ("<a href='index.html'>Technical Article Index</a><p><font size='-1'>");
document.write ("<ul>");
document.write ("<li><A href='depth_of_field.html'>Depth of Field in depth!</A>"); 

document.write ("<li><A href='polarizers.html'>All About Polarizers</A>"); 
document.write ("<li><A href='all_about_exposure.html'>All About Exposure</A>"); 
document.write ("<li><A href='testing_lenses.html'>Lens Testing II</A>"); 
document.write ("<li><A href='focus_testing.html'>Focus Testing</A>"); 
document.write ("<li><A href='lens_sharpness.html'>Sharpness Testing</A>"); 
document.write ("<li><A href='focus_recompose.html'>Focus and Recompose</A>"); 
document.write ("<li><A href='filters.html'>UV filters</A>"); 
document.write ("<li><A href='bokeh.html'>Bokeh and Blur</A>"); 
document.write ("<li><a href='bokeh_background_blur.html'>Blur Calculator</A>"); 
document.write ("<li><A href='digitaldof.html'>Digital DOF</A>"); 
document.write ("<li><A href='mtf/mtf1.html'>MTF and SQF</A>"); 
document.write ("<li><A href='diffraction.html'>Diffraction</A>"); 
document.write ("<li><A href='depth_of_field_calc.html'>Optical Calculator</A>"); 
document.write ("<li><A href='optical_illusion.html'>Optical Illusion</A>"); 
document.write ("<li><A href='measuring_focal_length.html'>Measuring Focal Length</A>"); 
document.write ("<li><A href='field_of_view.html'>Field of View</A>"); 
document.write ("<li><A href='testing.html'>Simple lens testing at home</A>"); 
document.write ("<li><A href='lenstest.html'>Why you can't trust lens tests</A>");
document.write ("<li><A href='resolution.html'>Aerial image resolution lens tests</A>"); 
document.write ("<li><A href='rrs.html'>Really Right Stuff - but really wrong optics</A>"); 
document.write ("<li><A href='doftable.html'>Hyperfocal distance [HFD]</A>");
document.write ("<li><A href='dofcalc.html'>Depth of Field Calculator</A>"); 
document.write ("<li><A href='dofdiff.html'>Sharpness at the HFD limits</A></font></ul>");