I think the learning curve might be:
With a dSLR you can no longer look at the LCD to frame your images. But I soon learned it doesn't make any difference. The view finder works just as good to line up the first image position. We use a Canon 20d or Rebel XT (350d) and a Sigma 8mm lens. We are using an old Kaidan Kiwi990 pan head but well know other pan heads will work too.
After that is averaging the shutter speed and aperature opening across all 4 (4 images at 90 deg) click stop positions. Rotate the pan head back around to the #1 click stop position and set the camera to (M)anual and enter the average shutter speed and aperature settings. When taking the images try using a wired (or Infrared) remote shutter release. This helps with - Anti-Shake.
Focus (not a pun) on getting the lighting conditions identified and the proper shutter speed and aperature opening correct. I would not use 'Automatic'. White balance or color temperature is very important.
With most cameras you can identify the lighting just by looking at the lights at your location. Are they Tungsten (incandescent), Flourescent or Halogen or a mix of daylight and the 3 light types).
With the Canon 20d the white balance values can be found owners manual on page 50. With the Rebel XT (350d) it can be read on page 56.
We find that Mixed lighting is most troublesome. Two approaches are:
1. Place a piece of A4 (8x11.5) standard white printer paper on the ground or floor where ALL the mixed light is being reflected back through the lens. Canon 20d use "Custom White Balance" option (page 51). The camera will learn what 'White' is and adjust the balance of the color specturm to match.
Sometimes I bring along an 18% gray card. It has 'White, Gray and Black' bands on the card. I place the card on the floor so it is in the picture on click stop #1 picture. Take the pano image set. In photoshop I can color sample (white, gray, black eyedropper) and tell PS what White is and it will automatically adjust the color balance for the whole image. Once you try this using Levels.. its amazing how the image pops into correct color balance.
Once again I have talked too long about the 'learning curve'
Dave
You may want to make your own gray card, so here is a sample
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Dave
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