panorama software,virtual tour software
Alternate Text
Joined: 2006-05-18
Send Msg:
Posts: 5
2006-07-17
#1

Sigma 15mm

I am confused with the 15mm lens working with Panoweaver. There seems to be contradictory posts regarding some cameras sensors. Will the Sigma 15mm lens work with virtually all SLR cameras? Are the results better or worse than with the Sigma 8mm? Thanks.


Alternate Text
Joined: 2002-06-12
Send Msg:
Posts: 2239
2006-07-17
#2

It is a pleasent  sunshine day at 104 degree (40c deg) here in Texas today.

From what I remember there is a EF 180 Diagonal 15mm Fisheye.  It might work for a PW 4 FULL FRAME flavor.  Not sure. See sample image - it is not a full circle fisheye image

http://www.usa.canon.com/consumer/controller?act=ModelDetailAct&fcategoryid=151&modelid=7321

I know the "EF-S" lenses only work on cameras like the 350d and 20d.  While the "EF" lenses work on Canon 350d, 20d and the full sensor 5d.

http://www.usa.canon.com/consumer/controller?act=ProductCatIndexAct&fcategoryid=151


/s/
Dave
Forum Moderator for
EasyPano - Panoweaver
Pano2VR


Visit 360texas.com
Alternate Text
Joined: 2005-09-16
Send Msg:
Posts: 156
2006-07-17
#3
Basically panoweaver can do one row around plus one up and one down. Anything more won't work.

Thus 15mm fisheye will only work if used on a full frame camera ie canon 5d or 1ds. Ordinary sensor cameras like nikon d70 of canon 30d will not work for panoweaver with this lens. Several people have made the mistake lately but if you look at the panoweaver support page it does vaguely tell you. Practically all lenses are better than the sigma 8mm in sharpness not that the end result is hugely different once reduced for the web.
Alternate Text
Joined: 2002-06-12
Send Msg:
Posts: 2239
2006-07-17
#4

Hmm OK.. since I do not have this lens.. I better stop saying anything about the Canon Fisheye 15mm. 

Yesterday we were talking about a straight NON Fisheye 15mm Sigma and Smooth sorted it out.  Said it would not work with PW4.

Nuf said

But here is a link to the Sigma 15mm Fisheye lens that does provide a diagonal 180 degree angle of view.  Maybe it has something to do with the Nikon d70, Canon 350d and 20d crop factor of 1.5 - 1.6

http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3279&navigator=4

The Nikkor 10.5 seems to work ok  10.5 x 1.5 = 15.75mm

The Sigma 15mm x 1.5 = 22.5mm

The Sigma 8mm on a Canon 5d full sensor is in fact 8mm full circle.


/s/
Dave
Forum Moderator for
EasyPano - Panoweaver
Pano2VR


Visit 360texas.com
Alternate Text
Joined: 2006-05-18
Send Msg:
Posts: 5
2006-07-18
#5
Thanks so much for all your help. This board is a wonderful resource.