In this tutorial we'll be creating an effect that uses a layer mask to give a pixelate - fade to - standard image effect using Photoshop. Start off with an image you want to apply the effect to, I'll be using an image of a building as I think the effect will look rather cool on this image. Duplicated the layer and go to FIlter > Pixellate > Mosaic and choose a decent cell size, make sure that it's not too big otherewise the effect won't work. Now add a layer mask to that layer go to Layer > Add Layer Mask > Hide all. Now select a gradient, make sure it is the Black to White gradient. Now just drag across the image, white will allow the layer to show up - so wherever the white is that area will be pixellated, wherever black is will be your original image. Now isn't that cool? Post your images created using this effect here so we can see your results!