can anybody help me with an eos canon rebel digital?

Question

is there a website that can help me with aperture, film speed, etc.?

i want to be able to do this:
http://www.flickr.com/photos/saldous/48164421/
http://www.flickr.com/photos/shawn_cunning/1459748926/
http://www.flickr.com/photos/martindanielsson/544465091/
http://www.flickr.com/photos/cb-photography/1461177152/

i need help in depth of field and in motion.

Answer 1

Well for the first shot, the one of the swing, the aperture is pretty low but not drastically so. The reason why you get that brokeh (or is it bokeh) or blurred background is the aperture, f/4.0, coupled with the focus being on something very close. The closer you focus the shallower the depth of field. Try Av mode at f/4.0 and focus at something close with a lot of distance in the background.

The second shot, the skull, is due to a very low aperture number, f/1.4. This will give you a shallow depth of field. Try Av and set your camera to f1.4 if you have a lens that will go that wide.

The third shot, the cherry splash, is a very fast shutter speed, 1/1000th of a second. Coupled with a high aperture to keep the entire shot in focus, f/16, keeps it all pretty clean and clear. ISO 100 would indicate that there was alot of light. Put on your shades kind of light. Try Tv mode and set your camera to 1/1000.

The fourth shot, the carousel in motion, was a very slow shutter speed, 4/5ths of a second or 0"8 on your camera, on a tripod most likely. The aperture of f/13 and ISO 100 were necisary to keep the shot from being too bright or blown out with the shutter staying open for almost a full second. Try Tv mode and set your camera to 0"8.

The lower the aperture number the wider the lens opening, letting in more light, the shallower depth of field, the faster you can set the shutter, the lower you can set the ISO. Its all relavant.

With ISO set it at 100 for bright sun, 200 for just regular sun, 400 for overcast, and 800 for indoors and you might still have to use the flash. You can ony set the ISO on the non automatic settings.

Answer 2

IMO you should enroll in a photography class at your local high school or community college. Learn about f-stops and shutter speeds and ISO and light and composition. If you're lucky you'll get to use a 35mm film camera and process and print your negatives.

If you don't understand composition and light and shutter speeds and ISO and f-stops you're wasting the capabilities of your camera.

Have you read and studied your Owner's Manual? Do you know how and when and why to use every setting and feature on your camera? If not, you may as well be using a 3mp point and shoot camera.

Here is a quick primer:

The f-stop (aka aperture) controls the amount of light admitted by the lens. It is an inverse relationship - f1.4 is a very large opening and admits all available light. f16 is a tiny opening and admits very little light. The f-stop also controls what is known as Depth of Field (DOF)*.

DOF is loosely defined as "The area in front of and behind your main subject that appears to be in focus". At f1.4 DOF is very shallow and focusing must be precise. At f16 DOF is greater.

The shutter determines how long a light-sensitive surface, whether film or a sensor, is exposed to the light admitted by the lens. An aperture of f16 and an ISO of 100 will yield a very long shutter speed.

ISO is a measure of the sensitivity of the film or sensor to light. An ISO of 50 would be very low sensitivity - our film or sensor will need a lot of light to make an image. An ISO of 3200 would be very sensitive to light.

With a constant amount of light, such as outside on a sunny day, our aperture and ISO work together to control shutter speed when we shoot in Aperture Preferred Mode (we set an f-stop, the camera selects a shutter speed). If we shoot in Shutter Preferred Mode (we set the shutter speed, the camera selects an f-stop) then the shutter and ISO determine the aperture.

This example is purely hypothetical and is for illustrative use.

Nice sunny day, ISO 100:

f1.4 @ 1/1000 sec.
f2 @ 1/500 sec.
f2.8 @ 1/250 sec.
f4 @ 1/125 sec.
f5.6 @ 1/60 sec.
f8 @ 1/30 sec.
f11 @ 1/15 sec.
f16 @ 1/8 sec.

Huge difference in shutter speed from f1.4 to f16 isn't there? You're probably wondering why. Remember that the aperture controls the amount of light admitted? f2 admits 1/2 as much light as f1.4; f2.8 admits 1/2 as much light as f2; f4 admits 1/2 as much light as f2.8, etc. As less and less light is admitted, the shutter must stay open longer and longer to properly expose our film or sensor and make an image.

So what happens if we use ISO 200 under the same conditions?

f1.4 @ 1/2000 sec.
f2 @ 1/1000 sec.
f2.8 @ 1/500 sec.
f4 @ 1/250 sec.
f5.6 @ 1/125 sec.
f8 @ 1/60 sec.
f11 @ 1/30 sec.
f16 @ 1/15 sec.

Since ISO 200 is twice as sensitive as ISO 100, our shutter speed will be twice as fast. Only 1/2 as much time is required to properly expose our film or sensor at ISO 200 vs. ISO 100.

Now you do this exercise at ISO 400. What will your shutter speed be at f5.6? If you have to email me for the answer that's okay.

* DOF is also dependent on the focal length of the lens. A "wide angle" lens will give more DOF than a telephoto at the same aperture and focusing distance.

Lets look at an example, using a "crop factor" of 1.6 (this gives the equivalent focal length of a lens on a 35mm film camera compared to the lens on your digital camera). NOTE:
This does not take into consideration the effect on DOF caused by different sized sensors.

A 10mm lens on your digital camera would be equivalent to a 16mm lens on my film camera.

At f2.8 and focused on a subject 2' away DOF is 1'-9" to 2'-5"
At f16 and focused on a subject 2' away DOF is 1'-1" to infinity

A 200mm lens on your digital camera would be equivalent to a 320mm lens on my film camera. We'll use 300mm here.

At f4.5 and focused on a subject 15' away DOF is 14'-11" to 15'-1"
At f22 and focused on a subject 15' away DOF is 14'-7" to 15'-5"

As you can easily see a longer focal length produces less DOF than a wide focal length.

Answer 3

I have this digital camera. The battery is rechargeable. It comes with a million LP-E5 battery and a charger. I could purchase an additional battery. I have a Canon alternative battery and a couple of widespread replacements. They all paintings. I can not take into account if the battery is charged through USB or no longer. Hope this is helping.