High active selection (or HDR) images is just a strategy that allows a photographer to take the same image at different exposures and then blend them together to make one image which includes the very best exposed components from all the images. For a virtual tour this is very helpful because so many Electronic excursions count on a 360 degree perspective so frequently you will undoubtedly be firing equally from and right into a mild source. Generally this will mean that you will have to compromise between the two and perhaps have black spots which are underexposed on one side and mild spots which are over exposed on the other. Applying HDR you can shoot at 3 or more exposure levels, reduced, medium and high and then blend them together to generate an ideal panorama.
What are the negatives?
Even though this strategy is very helpful it does has its negatives: First, handling time: Applying HDR imagery effectively triples the total amount of images you're working with, until you are employing prime conclusion gear (i5+ processors) then this will probably considerably improve time used all through post processing. Next; ghosting. HDR images are 3 or more images taken one following the other. When you yourself have movement in your images (for case trees going in the Virtual Tour wind or someone dropping on a humorously put banana) proper you come to piecing your images together the variations in the images may cause a gray cat effect that will ruin your scene. Finally you will have to work with application that supports HDR imagery; most prime conclusion application will but it's however a concern, especially if you are used to the one that does not.
So should I take advantage of HDR imagery to generate my 360 electronic excursions or not?
If you are contemplating applying HDR then my guidance is that you should first choose tripod and Panohead, the cat brought on by holding your camera manually can cause you no conclusion of trouble all through post handling and may even make your scene unstitchable. Should you choose spend money on these pieces of gear then with a bit of testing and post creation patience you can create some wonderful HDR imagery for you personally electronic tour. If you are seeking to sell the 360 electronic excursions you produce HDR is currently an industry common and an important instrument to producing professional, vibrant and well illuminated panoramas.
Exposure Bracketing
To take HDR images technically all that's necessary is just a camera where you could manually modify the exposure. Then you're able to set the camera in a fixed position on a tripod and take a few images at different exposures for use to generate one HDR image. However this method is frustrating, particularly for a 360 electronic tour where you will need to take a few images for each scene to stitch together later. As soon as your electronic tour contains 10+ scenes this could become an enormous time sink. If you are serious about electronic excursions then I highly recommend buying a high end DSLR camera which includes exposure bracketing. Exposure bracketing is just a feature on a camera that enables you to set the exposures at 3 or more levels (usually reduced middle and high, then when you press the shutter switch the camera can take the images in fast succession. It's the added advantage of lowering cat as a result of considerably reduced time passed between getting the images preserved by lacking to manually alter the exposure level.