Blurred Back Ground

[ftlmo]

I own a canon s50 and was woundering what setting i use to take a pic with a blurred back ground but emphasize on the main subject. As i take the picture so the subject i am taking the pic of stands out.

[EoSD30fReAk]

i don't know if the S50 is able to produce good DOF (Dept Of Field)

does the S50 have AV mode?? if yes than play a little with the aperture nrs.

the smaller the aperture the less Dof you have, so try to use a large aperture

(BTW the highest nr is the smallest aperture and the lowest nr is the biggest aperture)

hope i helped you :wink:

[ftlmo]

Yes it has a av stting didn't understand all the lingo u just gave me sorry can u try and make it more understandable for me.


ty

[Saudidave]

To record an image digitally or on film, you have to project the image on to the recording device of either film, or with a digital camera, the CCD.

In order for the image to record, it has to be displayed for a given amount of time and light. To acheive this you either have a wide aperture ( size of the hole thro which the light projects) for a short amount of time or a small aperture for a longer amount of time. Either way, the recording device is exposed to a given amount of lighted image.

If you want to have clarity of picture from close up to infinity, you need a small aperture and slow shutter speed to display the image for longer on the recording device to achieve the given time/light (Exposure).

If you want only the focus of the picture clear, and everything else in front or behind it blurred, you have a wider aperture and to compensate for the increased amount of light coming in, you need to speed up the time the shutter is open and thus achieve the same amount of light hitting the recording device.

To confuse you further, the lower the f number (measurement of aperture), the bigger the aperture (opening thro which light projects in to the camersa is.

So there you have it. If you want a small depth of field and only see clearly the subject upon which you focus, you need a wide aperture (low f number) and a fast shutter speed.

[Don Schaeffer]

DOF refers to the range of distances that are sharp at the same time. Shorter focal length lenses have very wide DOF. Most digicams use extremely short focal length lenses (which for a 35 mm camera would be like fisheye lenses) because of the small CCDs which act as film that are placed very close to the lens in the camera. So digicams have comparatively wide DOF. There's not much you can do about it. You can try taking telephoto shots (the longer focal lengths have smaller DOF).

Moreover, the edges of the iris diaphram in the camera cause interference effects with the light. The smaller F-stop diaphragm works like a pinhold camera increasing DOF. So you might try shooting with wide open lenses.

Ultimately the solution usually boils down to using photo software. Clip out the sharp main subject. Use a blurr or scratch filter on everything in the photo. Then paste the subject back in.

[D4VE]

As already said, essentially you want a low F number, set this nice and low and take a shot and see how it comes out. Not sure how much of a DOF you want, it might be enough, if not you can increase the effect in Photoshop or the like.

[ftlmo]

I tried all the modes on the canon s50 all the different f/values and every thing still coudln't get what i was looking for that blurry back ground and the main focus of my subject,can some one tell if it is possible to achieve in the manual mode setting of the camera if so what f/value should i use for example f/2 1/100 just trying out various types of pics with my camera.
:?

[stopbath]

Fstop is only one attribute to getting a blurry back ground and a sharp subject.

Depth of field increases the further you are from your subect, and the wider the angle of lens.

Therefore, using F2, get closer and/or use the telephoto range.

Do tests at different focus distances and different lens settings (zoom)