bmw5150
How did you manage to get the cars so close together?? What did you do to overlap the photos like that? Great job!!!!!!!!!!
Let me describe the basic first
Only 50% or less of each original photo is useful for the "photoshoped" photo
that 50% is the center of the original
here is my technique of taking shots:
1. move your car to desired position
2. take a photo from far left, then remember the right edge location
3. move your camera to the right using D-PAD (not analog stick) with the "remembered" location placing center
4. take a photo again, and repeat from step 2
also note that the camera zoom level should use default or larger value
zoom out will make the shots hard to align properly
for multiple car, you bring your car to photo mode one by one
You have to remember where your last car placed, so you will not get your current car overlapping the other cars
when you bring the 2nd car (or which-ever car) to photo mode, make sure you start with the same angle you did to your last photo (with different car of course)
best way to solve this is to use your digital camera to make reference
and then make sure your "whole" car is in 50% useful area
what I mean is that you can take more than 1 photo for each car if it is too large
so your car may split into more than 2 photos
ALSO the whole panorama view should be covered in all your shots within 50% usable area
now for the photoshop part
the upper layer usually cover 50% of bottom layer
e.g. layer2 above layer1, left side of layer2 should cover right side of layer1
then I add layer mask to upper layer (layer2), use gradient tool draw black to white, the 100% black should cover leftmost 10-20% and gradually to white at left most 30-40%
if the above layer haven't align to bottom layer, you can do it now
when you align to best position, you should get a flawless sharp image between layers
when you making a multiple different car panorama, sometimes the background of upper layer cover the car of bottom layer, now you can use layer mask again
why? you will not erase the actual image, just to make it transparent ... how cool is that?

use pencil tool to draw black, which will make that part of layer transparent
so draw the area where the car appear in bottom layer, don't forget the shadow too
if the gradient tool makes the car transparent, use pencil tool with white colour to recover the car (this case doesn't happen alot)
after putting all the shots together, you should get a pretty good panorama
BUT like my San Macro 4 Black LM, the sky will apear dark marks
because the photo mode camera itself contains dark area around the edge, even I have set Ambient Light to zero (I have asia version, from maskrider translation)
when it happens to you, you have to fix it using stamp tool or whatever you know
thats how I did my panoramas
Any problems or difficulties, feel free to ask
I will try to help ... sorry if I have bad grammer
