slr lens camera cheap second hand

These lenses are cheap second hand and more suitable for this exercise as you can control the aperture on the lens. In the interest of transparency: I've made some small corrections to the Phone-O-Scope images times. I think a lot of the image artifacts are down to the extreme magnifier stack. And the best bit about that is that I can say with reasonable certainty that it'll be impossible to ever get those same shots ever again. Technical issues aside, I'd also say that there is something to be said for having an unpredictable mechanism that prevents you from getting the same photo twice. This is a significant contributor to the chromatic aberration observed.

The image quality issues come down to two main factors: 1) Optical axis alignment. Image quality As I'd mentioned earlier, the point of this mod is to learn what is needed to successfully build an optical coupler. Don't forget to attach a bit of cardboard at the back to prevent too much light leakage into the mechanism. Attach the bottom connector to the camera phone case using thin strips of duct tape. Attach the SLR lens just and verify that your measurements are right. The distance that you get from the cardboard tubes should be the same as when the PVC connectors are roughly screwed together halfway, so you get lots of room to move them back and forth. Use the measurements for the top and bottom cardboard tubes to figure out how much you'll need to trim the PVC connectors. It was important that the connectors could be connected via a screw thread - this way we can move the whole SLR lens back and forth for secondary focusing.

Components for the actual adapter. If you find that all your images are heavily vignetted, you'll need to add another lens to the magnifier stack. The tricky part now is to get this working mechanism to make a picture. Attach this whole mechanism over the camera phone and magnifier. Start off by taking two sections of tubing, one slightly narrower than the other so it can slide inside the other. However, if you lack the equipment for proper measurement, you can estimate by building a set of sliding tubes with an SLR lens attached. The proper thing to do is do some proper calculations involving the measured actual magnification of the lens stack and the flange focal distance of the SLR lens.

The depth of field is rubbish but the magnification is huge. Just out of interest - this turns the cameraphone into a pretty decent microscope. This is so that they can be assembled together and handled as a single unit. I wrapped a thin layer of putty around the edges of the stacked lenses to stick thin strips of paper around the edges of the lenses. The proper thing to do is do some proper calculations involving the measured actual magnification of the lens aperture ; the more you can magnify, the less vignetted the image will be.
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