Wikipedia:Reference desk/Archives/Computing/2015 November 11
<
Computing
| Computing desk | ||
|---|---|---|
| < November 10 | << Oct | November | Dec >> | November 12 > |
| Welcome to the Wikipedia Computing Reference Desk Archives |
|---|
| The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
November 11
Digital camera focus length
Not sure if this goes here, or Science, or Miscellaneous. Please move this section if you think it goes somewhere else.
Consider
the previous camera), how does the camera know the focal length? Is it because I'm using the auto focus, rather than focusing it manually? I'm nowhere close to being an expert; I don't really understand most of the terminology. Nyttend (talk) 03:01, 11 November 2015 (UTC)
]
- I don't think it's related to the auto focus. I think the lens would just have a sensor inside it which knows the position of the zoom ring and communicate the focal length to the camera. Vespine (talk) 03:19, 11 November 2015 (UTC)
- Yes, there is a lot of processing capability in modern lenses, and a lot of data can pass back and forth through the 10 pins you'll see on the lens and the mounting ring. There is a little bit of information in Nikon F-mount, but I haven't struck on the magic Google string to find more details. --LarryMac | Talk 16:13, 11 November 2015 (UTC)