So as promised I have some steps to follow when processing images with isos high, usually from 400ISO.
Please note that this form of processing is best suited to my specific computer (Nikon D300), not sure if other cameras would be better to follow another procedure.
not try to teach the best way to do it (sure could be improved still many things) but that is what I will better myself.
not try to teach the best way to do it (sure could be improved still many things) but that is what I will better myself.
· The first is to disable the noise reduction of the camera (This is best done in PS). Other settings to your liking.
In my case the image control (based on standard mode) I have it as follows when:
Sharpness
8
Contrast -1 Brightness 0
+1 saturation
It's like maybe I will, but as you know if you shoot in RAW these settings can be done a posteriori. Like the white balance, although I prefer to do it at the time of the taking and so I ahorrro these adjustments on the computer.
The measurement of light in very high iso shots is very important, especially not to underexpose the making as this would generate excessive noise.
I try to stick to measure, but as a partner account Juan Aragonés in his excellent blog, if a tad overexposed even decreases a little noise in the shot. This also is not possible contention and argument, the sensors of digital cameras contain much more information in the light (right side of histogram) than in the shadows.
But I who am a bit vague at the time of processing the photos I prefer to set both the exposure and save me then correct the overexposed white.
After a long time mulling over the issue of different programs I prefer the combination of Capture NX and PS, and Neat plugin to reduce image noise. Is what best results me. Although Capture NX is very slow!
Well, based on these assumptions, ... go to the mess!
· Here we see the original image and no adjustments or prosecuted:
You see that this size is not much noise problem, is appreciated something in the background.
But if we see a 100% crop the picture changes:
Typically, as in this case is that much more noise evident in the background, to be more homogeneous (mostly) and being less enlightened.
In the plumage of the bird (with many more textures than the background) is much less noticeable.
started:
· Open the image in PS, adjust levels, saturation, etc (in this case only a slight saturation adjustment), the noise reduction and Unsharp Mask is best applied at the end of processing.
The best solution to get the highest possible quality of the image is reduced only the background noise and give a wee bit of unsharp mask to the wren.
· Make a selection of bird and the landlord (who are not going to apply noise reduction). It should be as precise as possible (although in this case I is not, to save some time), and fit nicely into the contour of the bird. A 800px is invaluable if we are not very accurate, but if we make an extension ...
Then invert the selection so that the filter only applies to the fund:
· Open the menu "Filter" and select the plugin Neat image:
· We see the following table:
· First adjust the square you see in the image on a piece of the fund to take a sample of the type of noise you have to delete.
Click on "auto profile" (above left. Marked with the number 1 in red), takes seconds to do the process. I usually always use it, but I really have not noticed differences skipping this step.
I like the default settings you have the plugin, so normally do not play anything. But if the iso, as in this case, is very high, I go a little adjustment percentage "Noise reduction Amounts Y" (marked with the number 2 in red), and adjusted for the amount of noise, can reach up to 100%, provided that the selection was nearly perfect (if not be noticed too in the shape of the bird).
In this case I think I got 80%.
we click "apply" and poof! already have the image without that annoying background noise:
Not bothered me a lot in making the selection is clearly seen in that area has applied the filter, but if You take a little while you do it well is perfect.
And it would be more or less and noise processing. A bit of saturation if necessary and you only have to save the image in JPG or TIFF.
I tell you what I do for the images I upload to Fotonatura, after much trtastear is the best result for me, and the loss of quality when compressing is minimal:
· First, if like me procesais image in the wider color profile (Adobe RGB), we convert it to sRGB, which is the color profile in which they work most Internet browsers, and so we will see the image of the same PS way and then internet (same colors):
And now there is give the output size. The tool "save for web and devices" works very well, and makes only compression without quality loss.
If the image size is very large we see a warning box:
But what I tried not affect the final quality, only slightly slows the process of reducing image size. Highlight your
to continue and see this other table:
( 1) As select "Bicubic Sharper" and adjust the image size to 800px wide .
( 2) Adjust the Quality slider to the size in Kb that we want (bottom left), in this case just under 200Kb, the maximum for FN.
Process finished. These are the steps I follow to process an image to be uploaded to the web.
I leave wren image processed even slightly larger pair that you see the final result after processing it in PS following the steps I told you about these lines.
ISO 1250, F7.1, 1 / 80
Finally some examples even more extreme in worse light conditions:
ISO 2000, F9, 1 / 60
Group cattle egret photographed in La Janda (Cádiz) during the postnuptial step.
The sun had set a few minutes ago and the sky was tinged with pink. At this time began to pass side and had to force the ISO to get a lot of translating the time.
ISO 3200, F4, 1 / 50
This Robin is at the limit of my camera isos,
but as you see it as a spare for upload
sizes tend to allow photo sites.
Y. .. nothing more ... hope you have served for something this "mini-tutorials."
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