thank you azy!!!! yes... these should be helpful here :] edit: fyi (from the resource center) f-stop: Used to define the aperture settings on a lens (the opening within the lens that allows light through). F-stop numbers are arranged in a series of stops (a doubling or halving of any value) numbering 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32. Some lenses may have more, some less - but each numerical value is a stop, that is, it either doubles or halves the amount of light allowed to pass through the lens. (Note: the larger the number, the smaller the opening, therefor less light.) Larger numbers (less light) increases depth of field. The actual numerical values are a ratio of physical aperture opening to focal length of the lens (i.e., f4 on a 50mm lens would be a physical opening of roughly 12.5mm in diameter - 50/4=12.5).

Message edited on: 04/26/2005 13:59

Perfect! Thanks for posting this, you just made things clearer for a lot of people I'm sure...pun intended. ;]

Very good post! This is the sort of stuff lot of folks need..up close and personal with images "witnesses" Thanks.

I was actually going to ask about this earlier today but had to run. Glad to see this. THANK YOU!

Now that last one is the shot i would want too. Thanks for the settings.

Ok what am I doing wrong? When I set my Camera to f/2.2 I get more DoF then when I set it to f/8.0.

Thanks for posting to show the difference! i love your photos!!! verrrrry nice. my cam can only go up to f8. sigh.

One question was that thing dead ^^ ;-) cause normally I don't get so much time shooting them. @brocklawson the DOF stays the same in the viewer of the camera only the final image changes.

Thanks Cindy for the Aperture values and settings....might help some here :)

Excellent illustration of dof :)

Umm, if I may note something... If your camera is anything like mine, these had to be shot at different focal lengths, right? I cannot get 1.8 (no, it's not a mistake, 1.8) except at the widest setting. The more you go towards tele lengths, the smaller is the aperture. (Generally speaking!) Wide angle has nicer side sharpness, while tele has nicer depth sharpness. So the blurring depends on that. Which would be kinda confirmed by your pics, no? Or I'm wrong?

If I were to guess..... These were shot with a DSLR, and a lens with a fixed maximum aperture. Fixed focal length or zoom it would not matter.....

Michelle is right These were shot on a Canon 350D using a Sigma 105mm macro lens so there was no zoom. I should of said this at the start but I was pushed for time. I might try this again using diffrent subjects and lenses.

ok, aze, you is either VERY fast, that fly was VERY slow (read:asleep) or you're a wizard with superglue! Whatever, excellent demo mate, even I can understand when I see it like this.... (Cyn, cheers also - me being lazy I wouldn't have found that for myself, and it helps too!) (",)

Ok my Sony DSC-f828 is backwords. I checked to make sure I didn't put the pictures backwards or anything. Maybe I am doing something wrong I am not sure.

First Picture:

Shutter Speed .2 f/2.0

Second Picture:

Shutter Speed 10 seconds f/8.0

So am I doing something wrong or is my camera really backwards?

Message edited on: 04/27/2005 22:51

My camera's manual says... Open the aperture... The subject is clear and its background is blurred. Close the aperture... The subject and background are both clear.

You're not doing anything wrong, and your camera is not backwards. Large opening = small number.... example f/2.8 You open up the aperture, dof becomes shallower less area is in focus or clear. Small opening = larger number.... example f/16 You close down the aperture, dof becomes greater, more area and background is in focus or clear.

Wow I feel stupid now. :( Ok it just clicked now that I looked at the original photos again. Thanks!