tag:blogger.com,1999:blog-8768375296475349032.post7767120602174593146..comments2023-12-07T05:07:30.405-06:00Comments on The Refracted Light: Photography in Low Light, part 2: The Purkinje CorrectionMark S. Abelnhttp://www.blogger.com/profile/06692448528819277158noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-8768375296475349032.post-57689860716136188712017-07-27T20:53:43.695-05:002017-07-27T20:53:43.695-05:00I came across your blog while googling the Purkinj...I came across your blog while googling the Purkinje effect. My specific interest is in how the eye sees vs how the camera sees, and how to achieve the eye's "subjective objectivity" as you rightly put it, in Photoshop. Thank you for writing this, I look forward to experimenting, using your analysis as a starting point.-Shttps://www.blogger.com/profile/04112478616199494812noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-87765322939005619652017-05-30T04:17:07.197-05:002017-05-30T04:17:07.197-05:00Excelent work! I have this question regarding the ...Excelent work! I have this question regarding the human night vision for more than 10 years...Liviuhttps://www.blogger.com/profile/02874228490397088819noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-65275416451531355372010-07-27T20:48:43.687-05:002010-07-27T20:48:43.687-05:00Excellent analysis Mark. You may want to look at s...Excellent analysis Mark. You may want to look at scotopic vs. photopic spectral efficiency curves at http://www.handprint.com/HP/WCL/color1.html<br /><br />In astronomy most of us are taught to use red light so it doesn't mess up night vision. Some astronomers have found that green light works better, because red light bright enough to read a star chart will excite both cones and rod (which is evident by the curves at the link above) but green light can be much dimmer to provide the same signal. Of course you have to get used to reading with rods...Mikehttps://www.blogger.com/profile/02491084930433319172noreply@blogger.com