Crop vs Stitch Pano

Started Mar 20, 2012 | Discussions
Shop cameras & lenses ▾
Neil Morgan Senior Member • Posts: 1,243
Crop vs Stitch Pano

Hi Everyone,

I went to the city for a walk on the weekend and shot the same place twice once for crop to pano and three shots to stitch.

Here's how they turned out, all shot using the same lens and FL, although portrait orientation for the stitched shots.

Apart from the stitch issue, please don't look for it for this , see which one you think is stitch and which one is crop and see if it makes sense.

Camera = D700 + 14-24

Cheers Neil

-- hide signature --

A Birth Certificate shows that we were born.
A Death Certificate shows that we died.
Pictures show that we lived!

http://www.flickr.com/photos/knumbnutz/

Nikon D700
If you believe there are incorrect tags, please send us this post using our feedback form.
Leonard Shepherd
Leonard Shepherd Forum Pro • Posts: 10,675
Re: Crop vs Stitch Pano

For those unsure the clues are in the regularity of the curve in the green circle, and whether the base of the blue tiles on the left are parallel to the base of the image, or points.

-- hide signature --

Leonard Shepherd

Photography could be easier - if cameras and lenses came with an increase in skill button.

 Leonard Shepherd's gear list:Leonard Shepherd's gear list
Nikon Coolpix P7700 Nikon D800 Nikon D7100 Nikon D810 Nikon D750 +24 more
_sem_ Veteran Member • Posts: 4,775
Re: Crop vs Stitch Pano

Neil Morgan wrote:

Apart from the stitch issue, please don't look for it for this , see which one you think is stitch and which one is crop and see if it makes sense.

This is a projection issue. There's no perfect way of mapping an ultra-wide scene to 2D. Rectilinear (top) keeps straight lines straight, but expands the edges and turns circular things in the corners into ovals. What you get with stitching depends on the projection the program uses (which one is it?). "Best result" depends on image content and your personal preferences.

Some stitching programs support several different projections. The free Hugin panorama program for instance lets you convert to rectilinear, fisheye, stereographic (Samyang 8mm fisheye), cylindrical and a bunch of other projections (several variations of cylindrical). It may be used for either stitching sets or single images as input. It is rather clumsy to handle in the beginning though. It can use EXIF image data for quick tests, but it is able to build a PTlens-like lens correction profile for your lens if you provide a suitable set of images for a 3D pano.

RBFresno
RBFresno Forum Pro • Posts: 11,124
Re: Crop vs Stitch Pano-- Nice Demo!Hi
 RBFresno's gear list:RBFresno's gear list
Nikon D2H Nikon D4 Nikon AF DX Fisheye-Nikkor 10.5mm f/2.8G ED Nikon AF-S DX Nikkor 17-55mm f/2.8G ED-IF Nikon AF-S DX Nikkor 18-200mm f/3.5-5.6G IF-ED VR +12 more
Skroob Regular Member • Posts: 268
Re: Crop vs Stitch Pano

Interesting results, and both have their issues.

The top one give a sense of "tunnel vision" and also distorts the thickness of the columns as they get closer to the edge of the image.

The bottom one is a bit too 'flat' though to really get a feel of the space.

As said above, turning 3D into 2D will always have its flaws.

 Skroob's gear list:Skroob's gear list
Sigma 20mm F1.8 EX DG Aspherical RF
BoyOhBoy Senior Member • Posts: 1,807
Re: Crop vs Stitch Pano

sem wrote:

This is a projection issue. There's no perfect way of mapping an ultra-wide scene to 2D. Rectilinear (top) keeps straight lines straight, but expands the edges and turns circular things in the corners into ovals. What you get with stitching depends on the projection the program uses (which one is it?). "Best result" depends on image content and your personal preferences.

Paralax correction with an appropriate leveling head and nodal slide will eliminate stitching problems, particularly if you stay away from the corners of the frame.

http://reallyrightstuff.com/WebsiteInfo.aspx?fc=84

-- hide signature --
Keyboard shortcuts:
FForum MMy threads