Category Archives: Tips & Tutorials

Tutorials for Lightroom, Photoshop and digital photographic techniques.

Dusty Textures

intro

If you’ve noticed some dust, hair and dirty things on my pictures, like this, this, and this, and yes this one too, well, I can tell you I don’t like so much to clean home and even my computer desktop is a mess. Besides that.. I love grain, dust and those dirty picturessss.

So, anyway, today I’m feeling extremely generous and I’ll give you some dirtness. Three textures I made, to give your photographs a dusty and analogic feeling… to turn this kind of shots:

orig1

into this..

dusted

Just place one of the texture on a layer in front of you picture using the Screen overlay mode.. adjust the levels and the opacity to adjust the effect!

Download the dirty texture 1

Download the dirty texture 2

Download the dirty texture 3

Non-Destructive Lens Flare in Photoshop

If I say “Lens Flare”, what’s the first thing coming to your mind?

Well, for me it’s something like this:

Yeah, pretty scary, isn’t it? Something from the 90’s.. remember Geocities? Fortunately now we have social websites with great graphic design and usability.. you know something like myspace (doh!).

However, I like Lens Flare, and I use this effect on many photos to enhance the light. Take a look for example to this shot:

There are two lens flare, one on the left, slightly orange/red, and another on the right, white.

The lens flare effect in photoshop is not bad, however has some problems:

  1. You have to apply the effect on the picture in a destructive way
  2. There are just four kinds of LF
  3. You cannot change the color
  4. ..and anyway, there are no way to change params after you’ve applied the effect!

…or no?

Actually you can use the lens flare effect in a very dynamic way, like a… smart filter.

Create a non-destructive, smart Lens Flare filter.

  1. Open a photo you want to apply a LF on
  2. Create a New Layer using Command+Shift+N. This will show the New Layer Dialog.
  3. Select Mode: Hard Light and check Fill with Hard-Light-neutral color 50% gray and click ok, creating the layer.
  4. Now let’s convert this layer to a Smart Object… long story short, a layer you can adjust in a non-destructive way.. Select Layer > Smart Objects > Convert to Smart Object.
  5. Now it’s time to apply our Lens Flare filter, so Filter > Render > Lens Flare.
  6. In the Lens Flare Dialog, you should be able to customize your lens flare effect.. especially where you to want apply the effect.. however, since we are working on a 50% gray layer you’ll see just a big gray area. But let’s just press OK for now and apply the effect.
  7. Let’s give a look to the LF Layer

    Well, that’s a Smart Filter. A filter you can adjust as you like in a non-destructive way.
    As you can see on the image, the lens flare renders perfectly. However, since we have used the effect on a Hard Light 50% gray smart layer, the Lens Flare is not messing up with your photo.. it’s non-destructive!
  8. To move and adjust the Lens Flare effect just double click on Lens Flare, under Smart Filters (in the Layers Palette).. You can adjust your LF and change it as you like.. let’s proceed.

Apply the LF on a point in the image.
Now you have your LF smart filter.. however there’s no easy way to point you LF where you like. The best way to do it is this one:

  1. Activate your Info palette (Window > Info) if it’s not already activated.

    Here it is.. basically it tells you the RGB color and the XY position of your mouse cursor on the photo. Press on the + (the cross) on the left of that X: Y:, and select Pixels (to see the XY values in pixels).
  2. Now move your mouse in the photo where you want to apply the lens flare effect, and check the XY values.. let’s say they are X: 250 Y:150
  3. Double click on the Lens Flare Smart Filter.
  4. Now, Click on the Flare Center preview while pressing the ALT/OPTION key… that will open thePrecise Flare Center Dialog.

    Write here your X and Y!
  5. Here it is, you correctly placed your Smart LF Effect where you want!

Customize the Lens Flare effect
You can change position, brightness and type as you like with the Smart LF effect… But let’s see you don’t like the color and you want to change it? Or maybe you want something more blurred?

Since you’re working on a Smart Object with Smart Filter you can add many other smart filters to modify your lens flare.

If you want to apply a blur on your LF, just select Filter>Blur>Gaussian Blur. Now you can adjust your blur effect on the lens flare. Of course, after you’ve applied the effect you’re free to modify or delete it as you like in a non-destructive way.

You can also adjust the opacity and the blending mode of the single effects just clicking on the icon on the right

How to change the color of the lens flare

It’s pretty simple, and the procedure is non-destructive.

  1. Create a new Hue/Saturation Adjustment Layer (you can also use a Color Balance to have more control if you like) and press ok on the Dialog.
  2. Now press Command+Alt+G. In this way you link the Hue/Saturation Adj. Layer to the LF smart filter, not affecting the photo.

    A small arrow will tell you: “Yeah, that’s right man!”
  3. Now just double click on the Hue/Saturation Layer to adjust your effect!
    You can use the Hue/Saturation sliders to adjust the color and the saturation.. however do not touch the Lightness, since it will affect the brightness of the image.
  4. Feel free to change colors/saturation as you like and remember you can still double click on the Lens Flare layer to adjust position, brightness and the kind of LF!

A Diffuse Light

You can create many lens flare.. however also some lighting effect, for example a diffuse light, just select LF Dialog: Brightness > 100% – Lens Type : 105mm Prime and in Hue/Sat select the color of the light source in the image.

Tips

  1. Place the effect on a point in the photo where there’s already a light source. You want to apply the effect where it’s plausible.
  2. The color of the light/LF should match the color of the light source.
  3. Paint a mask to adjust how the light/lensflare effect affects the different parts of the image (that means, look where the shadows are in your photo and try to apply the effect in a realistic way. Slightly decrease the opacity of the effect on a dark zone, or if you prefer draw exactly the light where you want.)
  4. Do Not Overdo!
  5. You can apply as many LF effect you want on a single Smart Object

Well, it’s all.. for now! Happy Lens Flare!

Trap Focus on Nikon D80

1-11Do you know what trap focus is? 
Well, I’ve found out this cool technique yesterday and, if you don’t know it yet, keep reading!

Basically trap focus is when, after doing some abracadabra to the settings of your camera, you choose a point to focus the camera and as soon as a subject enter in that area and it’s 100% in focus, click!, the camera start shooting automatically.

Ok, now I’m going to explain you how this technique works on a Nikon D80.. I presume it’s pretty the same on other Nikons and should be quite similar on Canon cameras too..

  1. Set your lens and camera for autofocus
    You can do it with manual focus too, but it’s probably easier with autofocus
  2. Set your camera in autofocus single-area AF-S
    In this mode when you press the shutter release button the camera will first focus and then take a photo. No photos will be taken before the camera has focused.
  3. Set AF-AREA to “Single Area” 
    It’s in the Pencil Menu – 03. That means it will use a single point to focus.
  4. Set the AE-L/AF-L button to “AF”
    Pencil menu – 15. This means: the camera will autofocus only when you press the AE-L/AF-L button, not when you press the shutter release button.


What you are doing is saying to your camera: 

  • I don’t want you to autofocus before taking a shot. 
  • I want you to take a photo only when the autofocus has done its job
  • I want to tell you where the trap-focus area will be pointing the camera somewhere and focusing


How does it work:

  1. Tell a friend to go few meters away from you.
  2. Point your camera (a wide aperture is better) to your friend.
  3. Press the AE-L/AF-L button. This will autofocus the camera in that point. Now you have your trap-focus in that area. (point4)
  4. Ask your friend to move further from you.
  5. Now the cool part: Press & keep pressing the shutter release button. The camera will not take a photo because you told her (yes, she’s female, at least in Italian) to obtain focus before releasing the shutter (point 2/3), however you’ve already focused on an area but in that moment the camera doesn’t see anything focused.. so she’ll just wait..
  6. Ask your friend to come closer.. (hug if you like, later)
  7. As soon as your friend enters in the trap-focus area… clikclickclickclick! The camera will automatically take photos!


It’s so funny, I spent one hour just doing these stupid things..

How can you use it:

  • Sport photography (car racing for example, you point somewhere and wait the cars)
  • Street photography – wide lenses (focus few meter away, walk, point you camera to the other people)
  • Street photography – long long lenses (that’s probably interesting, however I don’t have big zoom lens so I’ve not tried… you could just set a wide aperture, point your camera somewhere and wait people entering in the trap focus area)
  • Spy photography (just kidding…using a remote external shutter release and pointing the camera to your neighbor’s window – especially if she’s hot)
  • Wildlife?


Anyway, it’s a funny cool technique, have fun!