This link came to me in e-mail recently.
http://cbs11tv.com/local/local_story_058160642.html
I invite your comment.
http://cbs11tv.com/local/local_story_058160642.html
I invite your comment.
How about the "moving" orbs?
Looked like a moth to me.How about the "moving" orbs?
Looked like a moth to me.
This quick little site sums it up pretty well. Although I think there is one error, that is that the light from the flash hitting the dust speck isn't reflected back as an out of focus blob. The opposite is what usuually happens, the dust spec is reflected back in focus (or close to in focus). That is why we see them. The reason that we see so many is the common digital camera has a very short focal length lens. Short focal length lenses have lots of depth of field. One of the most common CCD sizes is 7.2 X 5.3 mm. A normal focal length lens is the diagonal of the frame. Pythagoras says that a normal length lens on this size CCD is about 9mm. A four time optical zoom might range from 7mm to 28mm. A disposable 35mm camera probably has a focal length anywhere from 28mm to 35mm (a normal 35mm camera lens is 50mm). This predicts that if you find a box of photos shot with 110 film or the infamous Kodak Disc film that their small negative size means short focal length lenses and therefore more orbs.For orbs, check here, http://www.starthinker.com/starthinker/orbs.html . Was done up in a hurry, but explains it pretty well.
This quick little site sums it up pretty well. Although I think there is one error, that is that the light from the flash hitting the dust speck isn't reflected back as an out of focus blob. The opposite is what usuually happens, the dust spec is reflected back in focus (or close to in focus). That is why we see them. The reason that we see so many is the common digital camera has a very short focal length lens. Short focal length lenses have lots of depth of field. One of the most common CCD sizes is 7.2 X 5.3 mm. A normal focal length lens is the diagonal of the frame. Pythagoras says that a normal length lens on this size CCD is about 9mm. A four time optical zoom might range from 7mm to 28mm. A disposable 35mm camera probably has a focal length anywhere from 28mm to 35mm (a normal 35mm camera lens is 50mm). This predicts that if you find a box of photos shot with 110 film or the infamous Kodak Disc film that their small negative size means short focal length lenses and therefore more orbs.
I've also seen many orbs that in my opinion are lens flare. If the general scene is dark and the orbs are randomly distributed then we know that dust or air born moisture is the most likely cause. If the scene is brighter or has a fairly bright light source and the orbs lay on a straight line, often intersecting the light source, then lens flare is the most likely cause. While lens flare usually has the telltale hexagonal or octagonal shape, lenses with a fixed aperature would have round flares. Airborn particles do seem to be the most common.
Thanks, I hope you guys didn't gobble up my bandwidth as I lost my server and this is just being hosted at home (thanks alot, le). In anycase this was supposed to be followed up by two more pages one showing how if you focus on a point, I used the head of a push pin, in focus you can tell it's a dot but as you you focus on something in the background, and this demonstrates well with a video camera, the head of the pin becomes more and more out of focus and becomes more transparent in the center with a ring on the outside. If you look at the orbs I photographed that's what you mostly see. So while I partially agree that some may be in focus, it's the out of focus specks, and out of focus insects, that are usually mistaken for orbs as they look more like hollow balls than solid specks.
I didn't touch on lense flares because they are more obvious and that was going on the last page. I had many demonstrations to put up but alas, I haven't had the time. Like I said, the second page was going to be more in depth, with videos of moving orbs and orbs "hiding" behind things and showing how orbs magically appear when I wave a duster through a room. I was then going to follow up with some "ghost" pics and perhaps even fake a bigfoot or two. In any case, I kept it simplified for the casual person to see the basics behind what causes orbs and didn't want to get into focal lengths and things a non-expert wouldn't be able to follow. I also wanted to do it in a way to show these things don't have to be staged, how anyone pointing a camera can capture something that appears paranormal.
One more note, this little project started with a book called "How to Photograph the Paranormal" (can't remember the author) and I was going to scan in so-called paranormal pics from the book then recreate them and show how it was done, but I decided against attacking that specific book and made it more general.
Does anyone think it worthwhile to continue with these pages? With some prodding I could find the time.