It’s actually really simple. First of all, you don’t need a special lens. Woo hoo! Second of all, you’ll need a photo editing program such as Photoshop. I’ll give you the basic tips with some images and even if you don’t have Photoshop, but have another editing program, you’ll still probably manage to do this.
Of course, this effect works BEST if taken from an aerial perspective, or from a tall building looking down, with lots of buildings, and lots of people. I unfortunately have shown you none of these things as I used this house photo as my example. Whoopsies.
Select two sections using the Rectangular Marquee tool, holding down shift to select the second section along with the first.
Select the Feather option.
Change the Radius to 20 pixels.
Under Filter, and Blur, select Lens Blur.
Mimic the Lens Blur options as I have shown above. Check the Preview box, select More Accurate, Change Radius to 20, Brightness 11, and Threshold 255.
This is optional. To give the miniature effect that extra ‘fakeness’, increase the Saturation 40+.
And there you have it.