Armen Gharib wrote:By the way now under my disposal I have one of the best spectrophotometers in my lab and I can measure the filters' transmittance and reflectance in a month, actually I can do many test.
Useful feedback Doc. Perhaps I am looking for it too much - if it gets me now further than better B&W images then that is at least something .Dr. Harout wrote:Birma, I do not notice the IR effect but beautiful shots in B&W.
Thanks Armen . Yes, the sun was nice and bright (in between the clouds) and so I was in the region of 1/250 to 1/500 without the IR filter. I also had a Graduated Neutral Density (ND4 I think) filter on. This probably took it down to 1/125 without the IR filter as a test shot.Armen Gharib wrote:Hi Birma
Nice shots. I have had a look to the settings of your image and it has 8 second exposure which is still good for a700, I think you had a pretty good sun, hadn't you? By the way did you somehow modify your image by photoshop to obtain a B&W image? Because for 720 nm filter you couldn't obtain this effect.. BUt I really like the details, nice!!
Armen Gharib wrote:Hi everybody!!
Dear Harvey I have just done experiments on the leds I have under my disposal.
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