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Noise happens because there are some errors in both the collecting and counting process. Each bucket catches photons (particles of light) and turns them into electrons, which are then counted to tell the camera how much light hit that pixel. Each pixel on the sensor is a tiny bucket-in the case of my camera they about 5 microns across (5 millionths of a meter). Digital noise comes from errors in the camera reading the image sensor. Noise in digital photography is a bit like grain in film-but has some differences. Photoacute vs helicon focus iso#The extra bits give much smoother gradations of color, and reduce digital "noise" that can occur in shadow areas, especially at high ISO (when there is not much light). On my camera each pixel has 42 bits (14 bits each for Red, Green, Blue), whereas most low end digital cameras have 24 bits/pixel. In addition to having lots of pixels, each pixel is big in terms of bits. Net-net the tradeoffs argue for the Canon, at least for me. Under ideal circumstances the quality is definitely be higher than my camera, but those ideal cases are rare. These cameras are really made to be used in a studio, where you can give them plenty of light, tether them to a computer, use an AC power supply and so forth. ![]() The battery life isn't great, and neither is the ISO range. ![]() They are much more cumbersome-both heavier (not that my camera is light!) and bulkier. They are also about 4X more expensive for 2X the number of pixels, but that underestimates the total difference. Digital backs for medium format cameras have up to 45 megapixels. If all you care about is looking at the pictures, you can skip the rest of the text! But, if you are interested in the technology behind the picture making, read on.įor most pictures I use a Canon EOS 1Ds Mark III camera-this has 21 megapixels, so it is pretty serious, but it's not the biggest out there. Photoacute vs helicon focus software#A small amount of the "more to it" is me, the rest is a complex mixture of software and hardware. Whenever I hear that I smile and think yes I do have great equipment, but there is a bit more to it than that. Click on the images at the end of the essay to enlarge.Ī very frequent question that I got from the previous emails is "what equipment do you use?", or "you must have a great camera". These were mostly taken during my recent trip to Iceland and Greenland. ![]() This feature contains some panoramic shots that are created by stitching together multiple frames into one picture. The previous messages about my Iceland/Greenland trip were about conventional pictures. Photoacute vs helicon focus series#For this reason, this option is useful not only when shooting individual images for increased dynamic range, but also when shooting HDR series that you wish to stitch together in a panorama using normal stitching software.Panoramas and Photo Technology from Iceland and Greenland These images do not have to be reduced via tone mapping to a printable format. This function also merges source images with differing exposure settings, but outputs 8-bit or 16-bit LDR images. Photoacute vs helicon focus pro#Many of these tools can be downloaded as free trial versions at: A simple, but nonetheless useful HDR variant offered by Photomatix Pro is the Exposure Blending function (figure 1). Tools used include Photoshop, PhotoAcute, Photomatix Pro, FDRTools, CombineZM, DOP Detail Extractor, Helicon Focus, and more. Filled with hands-on guides, the book includes techniques for HDR imaging, super-resolution, focus stacking, and stitching of images. Editor’s Note: This excerpt is taken from “Photographic Multishot Techniques” written by Juergen Gulbins and Rainer Gulbins, published by Rocky Nook, Inc., and available in bookstores and online bookstores, including. ![]()
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