Forum : Advice & Critiques

Can’t seem to get something to synth right? Curious about what lens is best? Ask your fellow Photosynthers here.


Topic: ipad app

Report Abuse Report Abuse
wrigha2c (Over 1 year ago)
Hey Guys, Im new to this and am trying to use the photosynth ipad app that has a dot in the center of the screen to line my shots up. I can't get it to stitch correctly. What am I doing wrong?
http://photosynth.net/view.aspx?cid=efe3965c-c6b9-47fb-a439-246b11e0a931
NateLawrence (Over 1 year ago)
Hi there, wrigha2c,

All existing panorama stitching software (that I am aware of) is inherently 2D stitching.
What that means is that for a good panorama with no stitching errors, you will not want your camera's lens to change position (latitude, longitude, or altitude) between input shots for your panorama.

It is common for panorama newbies to want to hold their camera at arm's length and orbit their camera around themselves. This is a mistake because it will cause anything close to your camera's lens to line up differently with background scenery in different input shots (and this will give very poor results with 2D stitching).

Here's two little resources to help you understand what amateur and professional panorama photographers should be aware of.
Amateurs: http://bit.ly/howtopano
Professionals: http://www.johnhpanos.com/epcalib.htm
NateLawrence (Over 1 year ago)
Having said that, the stitching on Photosynth's mobile panorama app isn't the best quality that I've seen. 

Their app's strengths are the excellent shooting mode and the ability to shoot a complete spherical panorama, however because of the restraints of resources on the weakest mobile devices that this app was designed for (such as the iPhone 3GS), the app takes very low resolution input shots and does not do the best at stitching them together either.

You could actually get much higher quality panoramas by using your default camera app to take input shots and then use a desktop panorama stitcher such as Microsoft ICE ( http://bit.ly/microsoftice ) to stitch a full resolution panorama (which will give you a much better long term result) and still provide you the freedom to either upload your panorama to your Photosynth.net account or save it as a flattened image file in a number of formats.
NateLawrence (Over 1 year ago)
So, if you're just wanting a quick interactive pano with the freedom to shoot a full sphere in whatever order you like, Photosynth's mobile pano app can get the job done and it serves as a nice pair of training wheels for panorama newbies, but if you are focused on high resolution end results and you still want your panorama to be interactive (wraparound) and easily sharable (free Photosynth.net hosting), then I'd shoot photos with the default camera app or just a regular camera and stitch my panorama with ICE or Photoshop for Windows ( http://bit.ly/pstops ). 

If you're really and truly zealous about professional grade panoramas where it looks as though the entire thing was taken in a single shot, then you're going to want to purchase a panoramic tripod head (as described in the johnhpanos link above) such as a Nodal Ninja or a GigaPan and learn to use manual focus and exposure on your camera so that lighting + focus don't change from one input shot to the next.
wrigha2c (Over 1 year ago)
thanks :) i'll give it a try
You need to be Signed In to add a comment. (Are you new? Sign Up for a free account.)