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Message: <blockquote data-quote="Vespobuteo" data-source="post: 3318957" data-attributes="member: 120830">very interesting comparison,and good chartWhen analyzing RGB-color chanel values in the image file I did some observations:* It seems that the SF:s have the same bump in the transmission curve (at green-yellow) as the later FL:s had.* The SF, compared to the HT, have a bit higher transmission in reds.(suspect it to be visible in use, considering that the transmission curve of the 7x42 FL is rather similar to the HT 8x42, and the SF had definitely stronger reds than my FL)* The SF actually have a higher luminance value than the HT (about 3%)that is a bit strange, but perhaps within the margin of error?Or did you mix them up Tobias? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />(would be interesting to see the same comparison with LED-panel lighting)* The EDG 8x42 seem to be 7-10% dimmer than the brightest (SF, HT, HD+)(luminance compared)* The 8x32 HD+ is the only one that shows a slight bump in blue transmission.(and a bit surprising, low in red transmission, not a typical leica curve at all)* The 8x42 HD+ now seem to compete with HT and SF in transmission level.* None of the bins are completely neutral* color wise the differences are not huge when looking at the figures,the differences between the highest and lowest RGB channel are:HD+ 8x32: 3.2% (R156/G155/B160) EDG 8x42: 3.4% (R152/G153/B148)Habicht 8x30: 3.4% (R153/G154/B149)HT 8x42: 3.8%  (R159/G164/B158)SF 8x42: 4.3% (R165/G168/B161)HD+ 8x42: 5.0% (R167/G164/B159)HGL 8x32: 5.4% (R157/G154/B149)EII 8x30: 7.7% (R140/G132/B130)(RGB values within parenthesis, R-Red, G-Green, B-blue):To me it seems to be a choice between having maximum transmission in part of the spectrumor a flatter transmission curve. Having both are probably very difficult toobtain.Considering the results I see correlation with the transmission graphs at allbinos.com,so the methodology used by Tobias seem to be reasonable valid,the absolute values for EII seem very low though, also HT vs SF values seem a bit strange,perhaps it's due to changes in the natural light level?artificial light, for example a LED-panel might give more accuracy here.</blockquote>

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