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How can I do an HDR image?

HDR multiple image exposure settings for a t2i/550d,how do you do this.And photosop cs5?

  • looking to shoot probably 3-5 images together at different exposures. And then looking to process the images in cs5 photoshop later.If you can help with tips on one or both these things,would appreciate it.Thanks

  • Answer:

    With your camera attached to a tripod, take a normal exposure. Then using the shutter speed, bracket exposures -1/3 and -2/3 and +1/3 and +2/3 exposure Copy those five images to a file folder on your computer, maybe called HDRI2012 With Photoshop open and all five of the bracketed image files; File > Automate > Merge to HDR Pro NOTE: do not use the lens aperture to make changes in exposure. The change in depth of field will make the image look funny

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The number of exposures you should take depends upon the situation. I find that for night shots at late dusk, I usually take a total of seven exposures 1 f/stop apart. with using the regular all round exposure in the middle, and three over exposed and three under exposed. Make sure you either have your camera set on manual OR aperture priority and change ONLY your shutter speed.. Do NOT change f/stop. Lets say you find that the straight uncompensated average exposure for your night shot is f/4 at 4 seconds You should shoot at 1/2 second, 1 second, 2 seconds, 4 seconds, 8 seconds, 16 seconds, and 32 seconds all at f/4 at a given ISO setting for a total of 7 images shot at 1 f/stop (ev) increments. Photoshop CS5 can produce HDR images using HDR pro, however I usually use Photomatix Pro 4.xx. One more thing: USE A STEADY TRIPOD to avoid problems with alignment! Joseph Nowak http://www.flickr.com/photos/joe_nowak/sets/

Prophotoman

I'm guessing you need help with CS5. Here is a website offering free CS5 tutorials which I am sure will help you with this project. Its a good idea to keep this link in your browser and return to it over and over again and don't forget to share the link with others if its helpful. :) http://www.photoshoptv.org

Pammie

You need to set up auto exposure bracketing. Your instruction manual will give you the settings. http://www.canon.co.uk/Support/Consumer_Products/products/cameras/Digital_SLR/EOS_550D.aspx?DLtcmuri=tcm:14-726069&page=2&type=download - auto exposure bracketing is on page 89. Three shots is the maximum for automatic exposure bracketing on the 550d - if you want 5 you are going to have to do a couple of extra exposures. Or do six (two sets of 3 using the auto bracketing). CS5 isn't the best for HDR work. To be honest dedicated HDR software makes a much better job especially if there is any image alignment to be done. Have a look at Photomatix http://www.hdrsoft.com/, or Dynamic-Photo HDR http://www.mediachance.com/ - I've used both of these.

B K

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