Sharpening with the High Pass Filter
So let's, take a look at using the high pass filter for sharpening, so this is an alternative method for sharpening whichever one feels best to you use it. I'm gonna go ahead and close this image, and we're going to open up the cleverly named hi pass filter image. I'm cem, beautiful italian sweets, so everybody's tummies, they're going to be rumbling now. So what? I wanted to show you before and after, I'll zoom in a little bit a little bit so you can appreciate the photo and the sharpening. So here in my layers, panel let's, take a peek at it, we can see we've got the original background layer in the can that's hanging out on lee for you guys, if you've paid for this course and you get the exercise files, this allows you to just turn off the visibility I of the layers I created for you and you're back to my original so that you can experiment ok in your own files, you won't end up with the background layer. Okay? All right, so we've got our smart filter mask here, and I can see we're ...
working with smart object and here instead of on chart mask, we've used the high pass filter hey, so let's, take a peek at matt, I'm gonna go ahead and I'm going to go ahead and delete this layer actually I want to show you this sharpening first so here's our before and here's our after it's pretty easy to see here in the studio how much sharpening has been applied ok, so we're gonna go ahead and delete that smart object and with this one we're only gonna do global sharpening we're not going to do the select sharpening on top of it, so our first step is to either open the images of smart object by using file open a smart object or we can choose the filter menu and choose convert for smart filters photoshopped tells us where about straight a smart object we say okay, now we go back to the filter menu and we go all the way down to other doesn't make you feel smart to use the other category it's like I use the other filters what do you use so she's other and then we're going to choose high pass and your image is gonna look completely funky that is ok, so we've only got one control here in the high pass filter and it is the whip of your sharpening halo okay, how many pixels on either side of the edge are being affected by this sharpening so that's the sharpening with that's the only control you've got? I think that's why a lot of folks like this method because it's a little less intimidating you've only got one control the mess with instead of three so you don't have to memorize a bunch of magic members basically with this one you also don't ever want to go over four I'm not saying you can't beware if you do go over for ok, so I'm going to drop this back, tio about three and the cool thing about this filter is this gray preview. I'll zoom in a little bit so you can see this is showing me exactly what parts of my image you're going to be sharp and you don't get that kind of a preview of your edges in the end chart mask filter housing back out, so that is a really, really cool thing. So it's a much more visual way to sharpen your image because you can see what parts are going to be affected and if you know your image and if you shot it, you ought to know it, then you can use this slider too control which areas are being sharpened in which ones are you just make the you just get the slider so that the preview good so that the areas are being sharpened or the ones you actually want to be sharpened, but I'm gonna pump this back up, we'll set this that about three now gonna click, ok? And we're dead doesn't look great, we're not finished yet. The next step to this is we want to change the blend mode of the filter, not the layer, not with this. We want to change the blend mode of the filter itself so that it runs in a mode called overlay. Ok, so we're gonna double click the tiny little icon to the right of the high pass filter in our layers panel and from this blend mode poppet menu you want to choose, overlay the overlay anything in this section of the blend moon menu I like to refer to those as is my contrast boosters, because those blend mose do a little bit of lightning and a little bit of darkening. Ok, that kind of like a combination between some of the moves in the dark and category and some of the moves in the lighting category. Well, everything in the overlay category there's a neutral color and this categories neutral color is gray. So that means when we changed the blend mode overlay that gray is going to disappear and we got our sharpening, so all toggle the visibility I next a high pass often on, so you can see the before and after here's the before and there's the after you can really see it in this area in this area. I'll zoom in a little bit more so there's our before there's our after yes quickly how did you get to the blend mode how did I get to the blood moon get let's just do it again so go ahead and close this see if I have another image to play with yes ideo ah okay so I'm gonna go ahead and delete the layer that I created for you so we're back at square one also middle bits this picture is oh so funny too far okay so first step go up to the filter menu choose convert for smart filters photo shops and turn it into a smart object now we're going to go back up to the filter menu we're going to go down to the other category because we're all footage shot professionals here we use the other category she was high pass tweak the radius cider until the preview and gray looks good to you remember the lines you're seeing or the areas that will be sharpened so you can go as we dragged the radius slider to the left we are decreasing the width of the sharpening halos which means we don't have as much sharpening that's going to happen to our image so you simply want to drag this around until the preview looks good to you but you really don't want to go over three even at three or four rather even if three in this image I can tell right here that I'm going to introduce him pretty seriously wide sharpening halos I don't want that so I'm gonna go back down tio let's say two on this image and then go ahead and click ok now the next step the last step is to double click this little icon right here is going to be to the right of the filter name in your layers panel doubleclick this guy right here and that will open your filters blending options this is where you can back off of the opacity or the strength of the sharpening that you just applied also where you can change the blend mode so we'll go ahead and choose the mod poppet menu and you want to go down and choose overlay and that's going to make that gray dropped right out because graze the neutral color for modes in that section or category of that menu and then you can go ahead and click ok and now to see it before and after we can toggle the visibility I of the high pass filter often on so here's our before and here's our after and we haven't introduced any weird color shift we've not destroyed our image was completely non destructive method of sharpening that weaken back out of it any time yes when I was taught to do that, they said to use thie uh soft light or hard light and I know it's in that same menu section what are the reasons you would use those and as opposed to overlay? Gosh, I'm not real sure I've never heard anybody use anything but overlay on high pass but let's just give that a little test ourselves here so we're gonna I popped open the blending options again and from the mod menu we'll see what soft light looks like looks a little softer, isn't it? Hard light looks a little more harsh yes. So experiment with these modes there's vivid linear light all of these just have I think they're introducing a little bit different level of contrast so whichever one looks good to you probably not that one that's it that's a whole nother effect in and of itself yeah, so it looks like any of those would work here. Any other questions on that technique? A question from guitar goddess our friend oh are my neighbors friends you if you over sharpen an image, is it best to go back and redo the sharpening or add some blur where it would adding blur be more destructive to the image than going I'm back yes redoing the sherpa yes. Adding a blur would be more destructive but if you're in a bind that can certainly save you but what you really want to do is hpd sharpening the way we just did with the smart objects, smart filters with an chart mask or with the high pass filter on a smart object, you will be able to back out of it so you won't. You won't back yourself into that kind of corner photo junkie forward us. Is there some general rule between the sharpening you see on the screen and the result? You see on prince? Yeah, it's. Very scientific. You want it to be a little bit too sharp on screen? That's about all I've got for that. I mean, seriously, it's. Okay, if it looks a little bit too sharp on screen because, like I said earlier, the process of printing is going to soften the pixels a little bit. So maybe maybe if it looks ten to twenty percent to sharp on screen, it will probably print. Okay, I'm just guessing on those percentages, but I go with a little bit. It looks this a little bit too sharp on screen that I know it's gonna print perfectly. One more question before we take our first break of the day from hq riggins or k riggins, would it make sense to use high pass in the same manner as we used uncharted mask for selective sharpening you absolutely kid, yes. Yes, so you could run one high pass filter on the smart object as your global sharpening. And then you could turn that smart object into another smart object. And then you could run high. Pass again at a higher radius for your selective sharpening, and then use the included mask of the new smart object to hide it from those areas.