Rawtherapee 4.0.11 iso#

A new user had bought a 'bridge' camera or, as I used to call them before marketing folks invented the name, a super zoom. But your camera should be close or you do have the right to demand your pixel peepin' refund. Any marketing manager worth his corner office will make sure the cameras sent to review sites were hand picked for performance. Complications on top of complications.ДЄ more reasonable question would be 'Is my camera as good as the camera that was used to take the photos for the review I read on my favorite photo site? The one that convinced me to buy the camera?' Photon shot noise, addition in quadrature, Poisson statistics-those sort of things. Physics-wise, S/N ratios are complicated. Or, to be more charitable, it might be because accurately measuring a camera's S/N ratio takes more than a look at a computer screen? Why? Maybe it's because some of us meany pixel peepers might take the number seriously and start demanding refunds. Sorry, camera manufacturers don't spec their noise or more accurately their signal to noise ratios. Point to where that is printed on the camera's spec sheet, you demand. With no sharpening and RT's noise reduction there is no visible noise in the black sky even when displayed 400%

Rawtherapee 4.0.11 iso#

You can do the same thing in two steps by switching to a default ISO noise profile and tweeking the exposure slider. So I was stuck with oversized tifs, 7 images only in the 128MB memory cards that were considered huge storage back when I bought the camera.ДЇrom the history pane, I played around with the noise reduction before I did any sharpening. Why? There is a signal averaging step in the calculations which degrades the low signal results when making this type of comparison.ДЄs for the TIF file-whatever version of RT I was using 3 years ago didn't do jpgs. My 3020Z has low noise highlights coupled with high noise shadows with about twice the noise of a similar RGB camera. He also ignored me or didn't understand me when I pointed out some of the technical reasons his big print didn't prove anything.ДЈ-The biggest and most not technical reason was that in normally printed, real world images blue sky doesn't need noise reduction. I remember one salesman holding up a 30in print of mostly blue sky to promote the noise figure of the camera his store was pushing that month. For those I'm going to have to use a different camera.Дў-The blue sky noise is half of what one would expect using a RGB demosaicing filter. This is an excellent starting point for B&W images and a no-go for any false color IR images. Without any post processing it loads up with a perfect 'white balance.' This is caused by the camera's unusual sensor, one that uses a yellow, cyan, magenta demosaicing filter instead of the standard Bayer red, green, blue filter.Дuring the camera's internal calculations to create an RGB image that can be displayed on normal monitors several things happen.ДЎ-The camera creates identical RGB channels from the internal IR RAW values. And yes, the much simpler RT workflow that produced these little masterpieces is worth blogging and bragging about.ДЄlthough I didn't highlight it, up at the top you can see this is a tif file. I was about to jump into the discussion and shout out all the ways RawTherapee works better, when I thought it wouldn't hurt to process an IR image to check that I knew what I was taking about.ДЄfter searching around in my backup folders- I had vaguely remembered taking a infrared set three or four years ago-I found these images. The thread that caught my eye was on Lightroom, infrared images and some over complicated problems you face using that editor. So I was more interested in seeing how flickr's new interface worked when I happened to visit the discussion area in flickr's Digital Infrared group three day ago. Learning the ins and outs of IR photography wasn't going to teach me anything I didn't already know. Rather it because I spent multiple years of my working life designing, building and servicing unusual and very expensive infrared instruments. Not because I don't enjoy looking at them. I've never been that wild about taking infrared images.