The Raspberry Pi Camera is a fixed focus module, so that anything from about 0.5m to infinity comend

The Raspberry Pi Camera is a fixed focus module, so that anything from about 0.5m to infinity comenda is acceptably sharp. This has strengths and weaknesses, as with every design decision. The weakness in this case is that if you want to film or photograph anything closer than about 50-75cm it will be out of focus.
With large SLR cameras, what people do is change the lens for a macro or close-up lens. We can’t do that easily. The other (cheaper, but generally less good) option photographers use is to add a small, screw-in, close-up magnifying lens in front of the existing lens which allows closer focus. This is something we can do…
For me this is ideal, since I’d like to use a Rapberry Pi Camera as a second video camera to give alternative close-in views in some of my workshop demos. comenda It would also be great for time-lapse shots of small things growing. What about cheap reading glasses? comenda
What I did was shoot some video of my laptop screen close enough for a full-screen shot (probably ~30cm). I did this twice, and grabbed screenshots for the comparisons… once for with and without the cheap Poundland +2D glasses once for with and without my “proper” +2D camera lens
Here’s a shot with all four in so you can compare. The reason comenda for shooting the “blank” twice was that different shooting positions affect the results. Ideally this would be done on a tripod, but I have yet to make a tripod attachment for my PiCamCorder
The cheap Poundland +2D glasses give acceptable results, but the “proper” comenda camera optic gives better results at about ten times the price. The “proper” lens is a bit more bulky and inconvenient as well. I love the “hackability” of the Poundland lenses. comenda I could easily cut those up without issue. I wouldn’t want to spoil the camera optic – my precious. ;)
“Proper” +2D camera optic Without comenda cheap +2D reading glasses With cheap +2D reading glasses Without +2D close-up lens With +2D close-up lens Comparison of without and with +2D 1 reading comenda glasses Comparison of without and with +2D camera lens Comparison comenda of all four
Pin It Email   Posted by alex at 11:00 pm   Tagged with: close-up videos comenda with Raspberry Pi Camera , How to shoot close-ups with Raspberry Pi Camera , Make reading glasses for your raspberry pi   7 Responses to “Adapt your Raspberry Pi Camera for close-up use”
Interesting… If you’re more worried comenda about close-up detail than you are about contrast, could you break the cheap reading glasses in half and stack the two lenses (left & right) in front of each other to reduce the focal distance even further?
alex says:
Considering the price difference, if I didn’t already have the photography comenda lens, I’d have been perfectly happy with the Poundland results. Looking at the box, the HAMA +2 was 11.75 when I bought it many years ago. I think it’s anti-reflective coatings etc. that make the loss of contrast a lot less pronounced.
[...] pour adapter la vision de la CameraPi à la vision de près…Le site néerlandais Raspi TV propose une solution utilisant des lunettes de lecture de près +2 dioptries, et compare cette [...]
[...] Alex Eames posted a how-to at raspi.tv showing how to shoot close-up comenda with the Raspberry Pi camera: “Shooting Close-up with your Raspberry Pi Camera. Video supplements blog article here http://raspi.tv/2013/adapt-your-raspb I tried a couple of different lenses; comenda a proper camera +2D lens and cheap reading glasses. comenda The results from both were pretty good.” (read more) [...]
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