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Alright as promised in the previous exercise I am going to show you how the more accurate checkbox works and notice if you hover over it you get this little tip that says toggle to produce more accurate sharpening effect, which isn't very helpful because it's just repeating what we are already seeing here more accurate. And it implies that we should go ahead and select it, after all who wants a less accurate sharpening effect? Nobody. Well as it turns that's not really what this checkbox does. It does a double sharpening, sort of a double scrub sharpening inside the image.
Go ahead and turn it on and you will see what I am talking about. Did you see that second pass of sharpening going on there, so it's doing an ultra-fine sharpening of the very, very tiny details inside the image. You might think of it as being almost the opposite of the threshold function so where the threshold function allows you to rule out microscopic edges inside of an image more accurate goes through and exaggerates the microscopic edges inside the image, which is probably not what you want to do for a portrait shot.
Now this woman, this model is very fortunate in that she is almost perfect in terms of her skin and her makeup and her teeth and so on. Check out this tooth in fact. Don't think it would kill you. She still has little sort of these fine hairs on her mouth and these fine hairs coming off of her nose and I say she is a very fortunate person because here I am inspecting her on this microscopic level and she is still holding up pretty well. It's unlikely that the subjects of your portraiture are going to hold up nearly as well, especially if they are just plain old ordinary people as opposed to models.
And this is a very unkind option to apply to them. I am here to tell you. I know portrait photographers who won't even sharpen their shots, they won't apply Smart Sharpen or Unsharp Mask to anything they photograph instead they will start blurring them. Now we will talk about that in the next chapter but for now just be kind, turn this checkbox off when you are working with portrait shots. In the next exercise I will show you an instance in which this is actually a useful function. Alright, but not where portraitd are concerned so let's leave it off, amount of 250, radius of 4.0 pixels this is wonderful.
I am going to go ahead and click on the OK button in order to apply the effect and this is an example of high resolution sharpening with more accurate turned off here as applied with a smart sharpen filter.
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