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what is "HDR" in photography?!!! check this out

Posted by Unknown on 00.07
What is HDR ?



HDR or High Dynamic Range is the process of making images that contain a large range of Dynamic Range , the range of difference between the " bright " and " dark " are very large , so-called dynamic exposure range .
HDR was formerly called HDRI ( High Dynamic Range Imaging ) . is one technique that involves basic knowledge of shooting techniques and advanced digital imaging . Essentially is to create a file photo ( format * . Hdr ) by combining several photos berobjek same " exact " but different eksposurenya . To produce a file photo a high dynamic range of values ​​( for the purposes of further if more extensive artistic variations )
State differences in darkness and light are very large such as this is called HDR and could be solved with the HDR process . If differences in darkness and light are not too big so instead of HDR lah . About HDR among others in :
http://en.wikipedia.org/wiki/High_dynamic_range_imaging
http://www.hdrsoft.com/
Three Main Steps How to Make HDR Photos :
1 . Make Pictures with Multi - Exposure Bracketing different or the technique .
2 . Merge .
3 . Tone -Map

In brief are as follows :

1 . Multi - Exposure : Making some photos of the same but different exposure . ( Bracketing ) .
· There are at least 3 photos with different exposures
· Exposure is a measure of the brightness of a photo . Minus value means that the picture is getting darker , plus the value and the value 0 otherwise normal light )
· 3 photos to be taken it should have the exact same object , use a tripod , or place it on a flat surface without changing the position of 3 photos when shooting because it will later be combined into one photo . If the ordinary with DSLRnya dah ... it could be without a tripod .
2 . Merge : Combine the photos with photo processing sotware like Photoshop , Photo Matic , or Dynamic Photo HDR . ( Download Link Software is here )
All that will be easily filled with cameras Digital Single Lens Reflex ( D - SLR ) due to exposure settings can be done automatically with a continuous shot in Bracket mode ( a mode that shooting 3 or more images in a sequence with different exposures ) , or manually by setting exposure at shutter speeds vary . Remember not to change the aperture . And the tripod is very necessary to get a good result because we certainly do not want our object to shift from one photo to another is not ?
3 . Tone -Map : Perform Tone Map to the combined light of the dark to set the Tone , Tone many processing software , such as Photoshop . If using Dynamic Photo HDR easier in my opinion .
It is a three main steps to make HDR , which will be explained in more detail . Each time you want to make HDR photos , memorable, there are 3 main steps in the process HDR above :)
" Multi - Exposure " / " Merge " / " Tone -Map "
So if there is a state of nature or portraits or anything in the world that contains the difference of dark and light are very large ( large dynamic range ) you can create HDR photos on the circumstances . Does not always have to be during the day , evenings are also many circumstances that contains HDR .
Fake HDR ( Pseudo HDR ) : There is also a fake HDR , which perform Tone Folder to a single file that is processed into 3 different file exposure , but this is not a Fake HDR HDR or Pseudo HDR . The result was good and nyussss mak ... but sometimes it is not perfect because the first step is not performed previously ( MultiExposure ) .

i hope you like it guys

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