any information provide to me ?? Author: bkenneth Time: 5/04/2007 21:05
Does anyone have any advice as to the best place to buy this scope in Hong Kong?
Thank you.
Ken Author: calexander Time: 6/04/2007 20:41 Subject: Simultaneous videoscoping & digiscoping with Carl Zeiss telescope and
We owned a Carl Zeiss 65T FL angled scope since 2003. We bought this together with a Sun Optics custom-made extra long eye relief 12X eyepiece for videoscoping for ~HK$7000 in Taiwan . At that time Euro was roughly equal to US dollars.
We have not used it very often especially in Hong Kong. Recently our DV broke down and needs to be replaced. After searching new models with both HDV and photo capailities, we bought the Canon HV10. Its photo quality is probably the best among all available HDV camcorder. Please check http://www.watch.impress.co.jp/av/docs/20060823/zooma269.htm (Japanese) and other of 小寺信良's reviews. The best thing is simultaneous HDV recording and photo capturing with remote control (see attached photo)
For samples of Zeiss digiscoping, please also visit:
http://www.flickr.com/photos/almiyi/
http://www.pbase.com/jourdaj/root
http://www.birdnet.co.uk/digi_comparison.html
http://www.naturfotografie-digital.de/interessantes/zeiss-diascope-65-t-fl/zeiss-diascope-65-t-fl.php (German)
I also have a Canon HV10, the HDV quality is outstanding but coupled to a Swarovski scope, it appears that the camera is only usuable at the tele end of the zoom, this means it is 10x (on the camera ) and 20x or 30x (on the scope) depending which eyepiece you are using, so the total magnification is far to great for Hong Kong's polluted conditions.
The HDV quality of the HV10 matches the quality of the 3 ccd HDV cameras.
Bob Author: calexander Time: 6/04/2007 23:03
[quote:b0613cfdfc="tbob"]I also have a Canon HV10, the HDV quality is outstanding but coupled to a Swarovski scope, it appears that the camera is only usuable at the tele end of the zoom, this means it is 10x (on the camera ) and 20x or 30x (on the scope) depending which eyepiece you are using, so the total magnification is far to great for Hong Kong's polluted conditions.
The HDV quality of the HV10 matches the quality of the 3 ccd HDV cameras.
Bob[/quote]
I am lucky to have a special eyepiece for videoscoping. This eyepiece has full eye relief "starting" 20mm and beyond. So for HV10, there is only minimal vignetting after 4-5x and no vignetting after 8-9x. At full 10x, I guess the total focal length is around 5000mm in 35mm equivalent. I tried both the 23x/30x and the 20-60x eyepiece. vignetting start to disappear at 9x and beyond. I agree with you that this huge magnification is not too useful at all.
Videoscoping and digiscoping is a lot different in terms of vignetting. Most camcorder has 10x zoom and more. The entrance pupil of the lens pulls back rapidly on zooming, far exceeding the eye relief of the eyepiece. It ends up even more vignetting on zooming until in the very high magnification, the angle of view is so narrow that vignetting disappears. But by then the actual aperture is so small and magnification is so high that it is difficult to get a decent picture or recording. In that case a custom-made eyepiece is needed. Author: bkenneth Time: 7/04/2007 11:02
Thank you very much for the feedback!
I am thinking of getting the 85T........I guess that I'll go around the usual shops in Mong Kok to have a look.
Thanks again.
Ken
Welcome to HKBWS Forum 香港觀鳥會討論區 (http://hkbws.org.hk/BBS/)
不包相機 
Image Attachment: Stonechat HV10 digiscope.jpg (6/04/2007 20:41, 0 Bytes) / Download count 5036