120 Posted September 21, 2015 Share #41 Posted September 21, 2015 Advertisement (gone after registration) I could not readily find the Kyocera B-7 sheet yesterday; do you have a link? Thanks Link to post Share on other sites More sharing options...
Advertisement Posted September 21, 2015 Posted September 21, 2015 Hi 120, Take a look here Does the Monochrom M246 have a different register from the M240?. I'm sure you'll find what you were looking for!
120 Posted September 21, 2015 Share #42 Posted September 21, 2015 ... The calculating of the register distance must be within a tolerance zone of 1/1000th mm ... Still wondering where you got this as it would be nice to have. This is quite different than the M9 tolerance as given by Leica. Link to post Share on other sites More sharing options...
jaapv Posted September 22, 2015 Share #43 Posted September 22, 2015 Sorry, one zero out . 1/100 th. Link to post Share on other sites More sharing options...
fiftyonepointsix Posted September 24, 2015 Share #44 Posted September 24, 2015 I could not readily find the Kyocera B-7 sheet yesterday; do you have a link? Thanks The Kodak KAF-10500 long sheet gives the spectral transmission for the Kyocera B-7 on Page 28. I have the KAF-10500 data sheet downloaded, it is on the Internet- but not on the Kodak or ON Technology anymore.It is also referred to as "BS7" in the same spec sheet. http://global.kyocera.com/prdct/semicon/semi/image_pkg/filters_windows.html I suspect "BS7" is Borosilicate Glass. Link to post Share on other sites More sharing options...
120 Posted September 24, 2015 Share #45 Posted September 24, 2015 The Kodak KAF-10500 long sheet gives the spectral transmission for the Kyocera B-7 on Page 28. I have the KAF-10500 data sheet downloaded, it is on the Internet- but not on the Kodak or ON Technology anymore.It is also referred to as "BS7" in the same spec sheet. http://global.kyocera.com/prdct/semicon/semi/image_pkg/filters_windows.html I suspect "BS7" is Borosilicate Glass. Thank you ! I had looked at the sheet for the sensor but I think one needs the sheet for the B-7. Link to post Share on other sites More sharing options...
dante Posted September 24, 2015 Author Share #46 Posted September 24, 2015 The problem with UV/IR absorbent glass is that the most effective ones are also the ones that degrade the fastest with moisture. Reputedly, BS7 is not as effective as Schott S8612. Actually, probably nothing is as effective as 8612, mm per mm. I have a 1mm external filter for an IR-converted X100 that is 100% effective. Here's the Kyocera spec. I would not be surprised if BS-7 is "Blue" and not "Boro," since the Schott designator is BG for most of the IR absorbent glass. http://global.kyocera.com/prdct/semicon/semi/image_pkg/filters_windows.html Dante Link to post Share on other sites More sharing options...
120 Posted September 29, 2015 Share #47 Posted September 29, 2015 Advertisement (gone after registration) Thank you Dante, I think there must be some data sheet in addition to this info sheet; in any case I have asked Kyocera. Link to post Share on other sites More sharing options...
ay11 Posted October 2, 2015 Share #48 Posted October 2, 2015 Don't know if the register is different or not--but I did notice that my brand new out of the box type 246 was back-focusing with all of my lenses. Enough to make it essentially un-useable without the EVF. A quick trip to Leica in New Jersey and the issue was resolved. I chalked it up to a bad rangefinder. Link to post Share on other sites More sharing options...
250swb Posted October 5, 2015 Share #49 Posted October 5, 2015 Just speaking up for the M246 but it is yet another brand new Leica (7) that I've bought that has been perfect right out of the box. Steve Link to post Share on other sites More sharing options...
120 Posted November 11, 2015 Share #50 Posted November 11, 2015 Thank you Dante, I think there must be some data sheet in addition to this info sheet; in any case I have asked Kyocera. I never did hear back from Kyocera, but I ran into this problem at my U. and the filter is just treated like a plate of glass. The nominal distance for the sensor could be checked in a prototype by a certain kind of MTF test. Link to post Share on other sites More sharing options...
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