Using a Digital Camera as a Second pair eyes and magnifying glass.

I discovered recently while doing a small electronic project that my eye sight was not up to scratch as I first thought.
Unfortunately, I thought I could work past my short comings and I proceeded with putting my project together.
This resulted in my project not working as well as I wished and also caused me to have to delve into some simple diagnostics. Such as searching for bridged solder joints and dry joints. But as I was already having trouble with my eye sight I ponder how I was going to resolve this problem. I tried a magnifying glass but the magnification was not up to spec. All the other device I had to help with my eye sight was rather fiddly and hampered my ability to resolve the issues I had at hand. Then it came to me to use my Digital Camera. Please don't point out how my electronic skills suck - I am too aware of this and it is very obvious.

Step 1 What you will need..

- A computer - with a photo editing software application.

- I am using Windows Vista Photo Gallery. It comes with Vista.

- One Digital Camera - I am using a cheap 4Mega Pixel Camera with 3 x optical zoom.
  **It must be capable of doing macro photography.

- And a well lighted area to take your picture.

- And some props or supports to hold your circuit or what ever you are going to magnify. I didn't build any special device to hold the camera. All I used was what was available at the time.

Comments

[frollard]

I've been using a similar technique for a while now - using my digicam to read faraway billboards (like the phone number on the pizza joint 3 blocks away from 19 stories up at my friend's house, support 'local' business)...

Uuber zoom is good.

Noteworth mention:  Digital zoom is crap for taking good photographs, BUT, with jpeg compression accounted for, it actually makes for BETTER close-up shots!  I don't have sample images around here, but I did a zoom shot from about 10 feet of my laptop power supply, full zoom + digital zoom, and it saved a crystal clear shot with wonderful readable text, at 'full' interpolated resolution.  I did another shot at full optical no digital zoom, and the supply took up about 5-10% of the target image.  The text was small enough that even at 12 megapixel, the jpeg compression turned it into a big goobery block of barely readable white and dark blocks.  Repeat experiment at full wide angle and crop/zoom = completely unreadable.

[spiderfurby]

I am amazed at the potential use for the humble digital camera. Thanks for your helpful suggestions with regards to the digital zoom. You must have a more expensive camera than myself.

[Lance Mt.]

If your camera is capable, there is a neat trick i've been u8sing for a while now.

I use the camera, and zoom in to 5.5x Zoom, taking a photo. I then go and view the photo, and using the same button to zoom i can zoom in to a further 10x zoom.

Although its only a 6megapixel camera (Antique old thing), i can effectively see some detail at 15.5x zoom.

  Gooooood stuff.

[Kryptonite]

Damn, mine can't do that.

[spiderfurby]

On the scale of cool that is mega cool thanks for that hint,

[stephenniall]

Handy ! one method i used to use is to scan the item with a scale rule behind it

[spiderfurby]

For Photography,

That is an issue - but if you turn of your flash which I presume you already have done and take the picture in natural diffused light you shouldn't have a problem. The beauty of digital cameras is that you can take as many photo's as you like until you get it right. Just remember to take notes on what you did to achieve the final outcome as all the effort will be in vane otherwise.

For Scanning,
This is a bigger issue as the shine is produced because the item is not flat against the scanner and being 3D it allows for reflection. All depending on what you wish to achieve. You could try inverting the colors so that it looks like an x-ray or removing the RGB channels - saturation or tint etc.  The concept is not for clarity of color but for crispness of the image so that you can see the imperfections. Another concept is and I haven't tried this is to use different color plastic sheeting similar to overhead clear sheeting to minimize the light reflection. You could try blue or red or green to see if this reduces the glare. It might even be a case of using clear plastic such as the stuff used for overhead projectors. It worthy of an investigation.  Surely, photographers use some method to stop glare when taking pictures of water etc. My knowledge is limited when it comes to this area.

[spiderfurby]

I am going to utilize that idea. I have an engineering back ground and that would serve as a useful tool.

"What are you going to do tonight brain", "the same thing I do every night Pinky, plan to take over the world"

[stephenniall]

yeah ! the only problem i had was that the Solder sometimes shone brightly

[Kiteman]

That's a useful tip.

Thanks.

[spiderfurby]

Thank you Kiteman