The bokeh normally assumes the shape of the aperture opening through which the light enters the camera. That means it's normally a circle or a close approximation thereof as the iris forms hexagons or octagons as it gets closed down further and further. The blur makes it appear roughly circular. In this case though, you would take your wide-aperture lens and leave it all the way open at 1.7 or whatever...and the "aperture" is then decided by this cutout which you stick in front of the lens. That usually means you get the equivalent of f/22 or something, and not a circle but the shape you placed in front of the lens.
The reason you need a wide aperture lens is so that you can still allow a reasonable amount of light in and so that there is enough out of focus area to actually make the effect of the cutout shape visible and obvious. Point and shoots have very short focal lengths and so very little out of focus area, thus, they can't use this trick. It doesn't *have* to be a heart either, it could be a star or triangle or...whatever really.
@bikehorn86: Hm, for some reason I can't promote this very well written, very informative comment. Perhaps replying to it will bring it to the surface where it belongs.
@roy8000: "The bokeh normally assumes the shape of the aperture opening through which the light enters the camera. That means it's normally a circle or a close approximation thereof as the iris forms hexagons or octagons as it gets closed down further and further. The blur makes it appear roughly circular. In this case though, you would take your wide-aperture lens and leave it all the way open at 1.7 or whatever...and the "aperture" is then decided by this cutout which you stick in front of the lens. That usually means you get the equivalent of f/22 or something, and not a circle but the shape you placed in front of the lens.
The reason you need a wide aperture lens is so that you can still allow a reasonable amount of light in and so that there is enough out of focus area to actually make the effect of the cutout shape visible and obvious. Point and shoots have very short focal lengths and so very little out of focus area, thus, they can't use this trick. It doesn't *have* to be a heart either, it could be a star or triangle or...whatever really"
@FooSchnickens: The lens on a DVD is much different. The thickness of the DVD transparent substrate medium is half that of a CD, thus the objective lens of the DVD is different to mitigate spherical abberation. Also, the recording track width and optical wavelength are different. The DVD lens can be made backwards compatible for CD, but not vice versa.
That's not the "the spare lens shield that came with his camera". It's the lens hood that should always be on the lens when it's in use to prevent stray light from entering the lens.
This idea may actually work better on a point and click camera. Cell phone cams would also work well for this lens setup. Both have shorter lens length and much smaller outer lenses.
how about making a reverse peephole attachment so you can take photos of the inside of people's homes?
http://gizmodo.com/gadgets/gadgets/reverse-peephole-viewer-182411.php
Using this technique, you can pretty much fix any sort of lens, filter etc to your camera. Why not bust open a few of those dollar store prismatic toys. You know the ones that give a fly's view or kaleidoscope view.
Given the extremely low-res and cheesy image quality you get, I'd say your describing it, Dan, as a "hotel door" lens is a much more accurate name. I mean, look at how very little of the camera's image sensor is used to capture the pic:
@Lite: is on a boat.: Wait. What just happened? I'm sitting here in a Castro cafe and suddenly every guy around me is on his cell phone making ophthalmology appointments.
08/30/09
Do you know how much time, money, and effort I spend on printing out my digital photos and sprinkling glitter and sparkle-hearts on them?
This will pay for itself in no time.
08/30/09
08/30/09
If you get stuck, leave a comment and the author will almost always respond and help you out.
08/29/09
The reason you need a wide aperture lens is so that you can still allow a reasonable amount of light in and so that there is enough out of focus area to actually make the effect of the cutout shape visible and obvious. Point and shoots have very short focal lengths and so very little out of focus area, thus, they can't use this trick. It doesn't *have* to be a heart either, it could be a star or triangle or...whatever really.
08/29/09
08/30/09
i don´t see any coment?
08/30/09
The reason you need a wide aperture lens is so that you can still allow a reasonable amount of light in and so that there is enough out of focus area to actually make the effect of the cutout shape visible and obvious. Point and shoots have very short focal lengths and so very little out of focus area, thus, they can't use this trick. It doesn't *have* to be a heart either, it could be a star or triangle or...whatever really"
By "bikehorn86"
08/29/09
08/29/09
08/29/09
08/29/09
[www.diyphotography.net]
08/25/09
08/25/09
08/15/09
07/09/09
07/09/09
07/09/09
http://www.rainydaymagazine.com/RDM2006/RainyDayPhotography/WideAngle/RDMPhoto_SuperWideAngle.htm
07/09/09
http://gizmodo.com/gadgets/gadgets/reverse-peephole-viewer-182411.php
07/09/09
07/09/09
07/09/09
07/09/09
07/09/09
07/09/09
Too bad that surgery requires them to go in through the rectum to fix.
07/09/09
07/09/09
07/09/09