panorama

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Aspen Trunk

Friday, September 17th, 2010

Recently, I noted this aspen trunk, and thought that it would make a good vertical panorama.  Converting it to black and white using Nik Silver Efex Pro seemed to give this already graphical image the punch it needed to stand on its own.

Click on the image to see a larger version!

Aspen Trunk, Populus Tremuloides

Aspen Trunk, September 2010

House on Fire ruin–a vertical panorama

Monday, February 8th, 2010

In my last post, I discussed a few techniques that can be used to effectively shoot panoramas.  All of my examples were of grand landscapes, and they were all landscape-oriented panoramas.  I want to use this post to point out another time you can shoot panos to yield great results.

Last November, we visited the Cedar Mesa area near Blanding, Utah.  Since we were limited on time, we chose to visit a familiar and often photographed Ancestral Puebloan ruin that’s been nicknamed the “House on Fire” (also called the Flaming Roof ruin).  I blogged about that visit here, in November.  While at the ruin, I envisioned someday wanting to print it very large, and wished I had a medium format camera with me.  Additionally, I really wanted to emphasize the “flames” exiting the roof of the ruin.

So, I took 3 landscape-oriented images, but rather than putting them next to each other, I stacked them on top of one another,  thus producing a larger image.  If you click on the image, you’ll see a larger version–the detail is amazing!  That said, it would look even better printed on canvas over your couch :)

A view of an Ancestral Puebloan ruin near Cedar Mesa, Utah

"House on Fire" vertical panorama, Utah, November 2009

Shooting panoramas with minimal equipment

Saturday, February 6th, 2010

As a photographer, or even a nature lover, you’ve probably stood staring at a wide vista wondering how you can possibly do that view justice in your photographs.  Maybe you’ve even wanted to be able to print that picture large to give a room in your home the same feel as actually standing there.  Have you ever thought about taking multiple images of a scene and stitching them together into a panorama?

Shooting “panos” has become more popular in the last few years with the advent of point-and-shoot digital cameras that stitch the image in-camera for you, but if you want to shoot a panorama with your SLR, there are some things to consider.  First, and this should be a no-brainer, pick something interesting to shoot.  It may look impressive as is, but if you pick out something with substance, it will look even better!

So you’ve got your vista picked out.  Now what?  In my experience, the key to producing quality panoramas is making sure your tripod is level.  If this is the case, you will have much better luck at the stitching process.  I have used two different methods to level my gear; the first is via a two-step process that’s super cheap.

My tripod does not have a built-in bubble level, so I start by removing the head, and placing a bubble level (~$3 at Ace Hardware) on the tripod.  Tinker with the lengths of your tripod legs until you level the tripod.  Now, put your head back on, and you’ll see that it can rotate on a level base.

using a bubble level to level my tripod

By removing the head and using a spirit bubble level, I can make sure my tripod head is rotating on a level base.

The second, and more recent, method I’ve used is by putting a leveling base on my tripod.  I use the Manfrotto 438 leveling base, but other companies like Acratech also make them.  They’re more expensive than my first method, but they’re way faster and you don’t have to fiddle with your tripod legs.  To level your camera on your tripod use a hot shoe level like the Jobu Designs Dubble Bubble level.

tripod head with manfrotto 438 leveling head

My tripod head can be leveled easily and quickly using the Manfrotto 438 leveling base.

level and set up for shooting panoramas

After leveling my tripod head, I level my camera on the tripod using a hotshoe level.

OK, now you’re level.  The rest of the pano practically shoots itself.  I usually work from left to right, making sure to overlap my images by anywhere from ~1/3-1/2.  This makes for a lot of images (many of mine are 12-15 images) but you’re almost sure to get a better stitch at the computer.

A couple of other things to consider before we discuss stitching:

  • To shoot vertical or horizontal…that is the question.  In stitching, you’re almost guaranteed to lose a little of the top and bottom of your images because the software will correct for barrel distortion.  Because of this, I almost always shoot my panos in a vertical orientation.  That way I’m left with an image that is a little more proportional, instead of something VERY long and skinny!
  • Just like with any shot, sharpness matters.  When I shoot panoramas, I almost always use a cable release and set my camera to shoot in mirror lock-up mode.  This reduces any possible vibration, hopefully ensuring a better stitch.
  • Do not change your focus or any camera settings while shooting your panorama.  However, consider bracketing your shots.  That way you have more to work with at the computer, and you can even consider making an HDR panorama (let’s save that for another blog post, please).
  • I haven’t addressed the problem of parallax yet.  Unless you are rotating on the nodal point of your lens (or using a pano slider), you will have parallax issues if anything in your pano is closer than ~10-15 feet.  The cheap solution is to make sure trees, rocks, etc are further than ~10-15 feet from my camera, and that seems to work to subdue parallax.  The obvious downside to my method is that you’re constrained as to your compositional choices.

So, now you’ve got your image files, and you’re back at the computer.  Can you simply align them in Photoshop manually, then crop the canvas down to its final size?  I think this works for most people ~1% of the time (I’ve managed to do it once, and I’m 99% sure it was dumb luck).  Every other time, the barrel distortion, as well as other factors, will necessitate the use of software to help you stitch your images together.

Panoramic photograph of Zabriskie Point at sunset, Death Valley National Park, California

Dumb luck. I stitched this 4-image pano together manually–I’ve never gotten it to work since.

For stitching panoramas, I use the software package Panorama Factory.  I like it because it has a fully automatic mode, which should work really well if you leveled your rig properly and provided enough overlap between images.  Alternatively, Panorama Factory allows for various levels of manual stitching, letting you define stitching points, and for the occasional difficult to stitch image, I like that mode a lot as well.  If you are interested in shooing HDR panoramas, Panorama Factory will stitch different sets of exposure identically so they overlay perfectly.  I have to admit that I’ve tried this once, and it didn’t work quite as smoothly as I’d like.  I’ve found that using the auto-align feature in Photoshop CS4 works well before blending images.

So, that’s basically it.  This tutorial was meant to get you taking beautiful panoramas using a minimal amount of equipment.  I hope you enjoyed it.  Feel free to add to the comment section if there’s anything I missed, or needs corrected.  Hope you can find this useful!

A panoramic photo of the Ritter Range, Sierra Nevada, California

An 11-image panorama of the Ritter Range, Sierra Nevada, California

Tuolumne Meadows in summer

Thursday, February 4th, 2010

If you ask my wife, patience is not one of my virtues.  I usually want instant solutions to problems, and you do not even want to be around me at Christmas (little kids have nothing on me!).  However, in photography, I tend to have significantly more patience.  I’m happy to wait several hours for a shot, and lately I find myself sitting on images for days, weeks or even months before processing them.  This potentially has a lot of benefits: it helps us assess their artistic value without the excitement of having fresh images hang over our head, and it also forces us to be patient and thorough in post-processing.

The image I processed tonight benefitted from my waiting, I think.  I took this panorama of Tuolumne Meadows, in Yosemite National Park, last August, but I haven’t processed it until tonight.  Once I got home, I wasn’t really excited about the way it looked.  But, tonight, that golden light on one of my favorite meadows made me wistful for the high country, as well as letting me look forward to summer.  This is a 10-frame panorama of the meadows; I processed each RAW file 3 times, at -2/3, 0, and +1/3 EV then combined them in Photoshop using the blending technique recently described by Younes Bounhar.

I’m pleased with the result; clicking on the image will link you to a larger image file so you can more fully appreciate the detail here!   I love panoramas because they really bring you into the scene.  Enjoy!

Tuolumne Meadows panorama, Yosemite National Park, California

Tuolumne Meadows panorama, Yosemite National Park, California, August 2009

Click here to see all of my Yosemite National Park images.