| Mailinglist: | PanoTools NG |
| Sender: | RomualdV |
| Date/Time: | 2009-Apr-04 17:47:35 |
| Subject: | Re: Re: Aiptek A-HD+ mini fisheye camera mod |
Le 4 avr. 09 ?7:29, Hans Nyberg a ?it : >> >>> . an Aiptek A-HD+ hybrid camera and it came this morning and I >>> replaced the lens with the fisheye lens from the GoPro Hero Wide -- >>> here is a still >>> http://www.mediavr.com/aiptek1.jpg >> >> Sharper in the corners than in the center in this sample, as you set >> it or it is a fov/distance effect... > > The focusplane of a fisheye is flat. This means that subjects in > the periferal areas may have a focus distance of 10 cm even if they > in real life are 10 meters away. > So if you shoot on full aperture and focus at 10 cm you get sharp > corners and no focus in centre. > Of course it is also the same the other way around. > http://www.panoramas.dk/panorama/fisheye-focus/fisheye-focus.jpg I badly experiment that for my firsts panos with the 10.5 Nikkor some years ago. But sometimes the focused plane -on the sensor side- is not absolutely flat. For example with a Canon 24mm/1.4. Romuald ------------------------------------ -- <*> Wiki: http://wiki.panotools.org <*> User Guidelines: http://wiki.panotools.org/User_Guidelines <*> Nabble (Web) http://www.nabble.com/PanoToolsNG-f15658.html <*> NG Member Map http://www.panomaps.com/ng <*> Moderators/List Admins: #removed# Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/PanoToolsNG/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/PanoToolsNG/join (Yahoo! ID required) <*> To change settings via email: mailto:#removed# mailto:#removed# <*> To unsubscribe from this group, send an email to: #removed# <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/