Timeline for How are the red focus point indicators displayed on a DSLR's focusing screen?
Current License: CC BY-SA 3.0
9 events
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| May 24, 2011 at 18:14 | comment | added | sastanin | @Evan Krall: I am not sure, but I think it is the case where Fair use is applicable. The purpose of this image here is only research, commentary and self-learning (it's not for repairing DSLRs, for instance); it doesn't affect marketability nor reduce the value of the original work (which is not for sale, BTW) nor it doesn't substitute the original work as a whole, and the scope of this citation is limited only to the question we discuss. Here is a backup image: s003.radikal.ru/i204/1105/07/a824c2627b6a.png | |
| May 24, 2011 at 4:24 | comment | added | Evan Krall | Are you sure the image doesn't violate the imgur TOS? | |
| May 20, 2011 at 14:19 | comment | added | Jari Keinänen | @Eruditass also note that focusing screen & focus point screen constructs differ between Canons: xxxxD & xxxD & 10D vs. xD & xxD. See this kawaii explanation: focusingscreen.com/work/canon_aps_docen.htm | |
| May 20, 2011 at 0:11 | comment | added | eruditass | Note that at least Pentax and Canon share different methods. You lose the ability to light up focus points when switching screens on Canon, but not Pentax. | |
| May 19, 2011 at 17:09 | comment | added | ysap | @JukkaSuomela - from the diagram of part 0-O170, and from images 6 and 7 it looks like the white parts are the surface-mounted LEDs. As there are 7 of them in the diagram, one can conclude that. It can be that only the five elements that are in a line are actually LEDs, but the same mystery remains. It can also be that I am totally wrong in my speculation... | |
| May 19, 2011 at 15:31 | comment | added | Jukka Suomela | @ysap: Why do you think there are 7 LEDs? | |
| May 19, 2011 at 14:35 | comment | added | ysap | What I don't really understand is how, from what looks to be 7 LEDs they produce 11 focus points? | |
| May 19, 2011 at 14:34 | comment | added | ysap | Wow. As far as I can tell, the LEDs are mounted on the elastic PCB strip, mounted in front of a small prism and reflected from the focusing screen, which is in line with @ElendilTheTall speculation. (at least for this specific camera) | |
| May 19, 2011 at 14:07 | history | answered | sastanin | CC BY-SA 3.0 |
