Very simple and very effective. No further instruction is needed beyond looking at the image below. Lens needs to have a big aperture though, < f2.0 for effective results.
That shouldn't matter. If the aperture wasn't that big you could still get a result if you were really careful cutting out a smaller shape. You might get some vignetting but that might just add to the effect.
Danielle: No, believe it or not, the images produced with this masking effect are entirely down to how the physics of light work.
Explaining it briefly, the reason the out of focus lights are in the shape of hearts is because the mask on the front of the lens is truncating the diffused light entering the lens. Think of it like a stencil and spray paint. Even though the paint coming out ot the can is in a diffused cloud of spray, the stencil only lets through a cretin amount in a certain shape and the rest is caught on the edges. It's pretty much the same thing, only with photons :)
You can also look at it in this way: The shape in the paper now represents the aperture hole. The reason you sometimes get 5-egded shapes with apertures at around 3.5 with lets say the 50mm 1.8 II is that the lens doesnt have as many aperture blades as a L-prime lens.
Nice idea. Just two bad I don't have a proper camera so I can't switch lenses.
ReplyDeleteThat shouldn't matter. If the aperture wasn't that big you could still get a result if you were really careful cutting out a smaller shape. You might get some vignetting but that might just add to the effect.
ReplyDeletehow does this work? Is the image photoshopped together?
ReplyDeleteDanielle: No, believe it or not, the images produced with this masking effect are entirely down to how the physics of light work.
ReplyDeleteExplaining it briefly, the reason the out of focus lights are in the shape of hearts is because the mask on the front of the lens is truncating the diffused light entering the lens. Think of it like a stencil and spray paint. Even though the paint coming out ot the can is in a diffused cloud of spray, the stencil only lets through a cretin amount in a certain shape and the rest is caught on the edges. It's pretty much the same thing, only with photons :)
You can also look at it in this way:
ReplyDeleteThe shape in the paper now represents the aperture hole. The reason you sometimes get 5-egded shapes with apertures at around 3.5 with lets say the 50mm 1.8 II is that the lens doesnt have as many aperture blades as a L-prime lens.
Yes :)
ReplyDelete