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Reverse Lens

May 5th 2011 23:02
Only a very short post this time but here goes..
Once you have got to grips with using your DSLR you may find that you want to try out some super macro photography, meaning you zoom right in, but don't have the money to buy the right lens. BUT there is another option to buying an uber-expensive lens, and that is turn your standard 50mm lens around. This may sound crazy but it works, heres how.
1.Turn your lens around! Make sure that you hold the lens right up against the body of your camera to ensure no light leaks in around the edges of your lens.
2.With some lenses you will need to hold open the aperture by pushing the little switch on your lens, this can be tricky and I know you have to do it with Nikon lenses but not with Canon.
3.To focus, you have to do it manually by moving yourself closer and further away from your subject, focusing can be very tricky as even a slight movement will throw everything out of focus.
4. Adjust shutter speed according to your light meter.
5. Take PLENTY of pictures. Many of your photo's will come out blurry, over exposed, under-exposed and out of focus, but when you get some results its all well worth it.

Below are some pictures I have taken using the Reverse lens technique....
50p reverse lens
50p reverse lens

Fly wing, reverse lens
Fly wing, reverse lens


Thank-you for reading, and I hope you enjoy using this technique, experimenting with your DSLR. Any questions? Please don't hesitate to drop a comment to ask.
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Light meter

May 3rd 2011 21:45
The light meter is something on you camera you really need to pay attention to, to be able to take photographs with the right exposure.
There are different kinds of light meters, but they are built into your view finder and they look like little numbers and lights. There are different types of light meter and they all look slightly different but are all based around the same idea.
Light meter
Light meter
Light meter
Another light meter

As you can see from the above, they will have a plus at one end, a minus at the other and a 0 in the middle. You are aiming to get the marker on the 0. The plus sign means there is too much light, meaning that you need to have either a bigger f number, a faster shutter speed or a faster ISO speed depending on which you want to change. If the marker is over the minus then its the opposite and you have to little light.
Now that I have told you about the light meter you have all the info you need to be able to switch in to manual mode on your camera. If you haven't read the other parts then click on the links at the bottom of this post. If you have any problems please do not hesitate to ask.

ISO speeds.
Shutter speeds.
Apertures.
Exposure.
Why to switch out of auto.
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ISO speeds

May 2nd 2011 22:55
ISO speeds refer to how quickly the film/ digital sensor reacts to light. ISO comes from the size of the silver nitrate crystals on film. The faster the ISO speed, the bigger the crystals meaning more crystal surface area and greater sensetivity to light and visa versa. Also because of this when you use a really high ISO you start to see the crystals as grain (film) or noise (digital).
Below are some example ISO speeds:

3200 <- very fast ISO speed - grain/noise can be seen
1600
800
400 <- everyday film - not too fast to create grain/noise but can still be used in low light
200
100 <- flash photography
50
25 <- extremely slow ISO speed - brilliant quality but need extremely bright conditions.

So in summary the smaller the crystals, the slower they react to light. Also the smaller the crystals the better the quality. Personally I would recommend keeping the ISO in auto untill you get to grips with your camera. When you do decide to go manual with your ISO speeds I would start off using an ISO of 400 unless you're doing flash photography, in which case I would recomend 100 or 200.
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Shutter speeds

April 30th 2011 13:32
Shutter speeds refer to how long the shutter is open for, so therefore how long the film or digital sensor is exposed to the light for.
We measure shutter speeds in seconds, and on a typical camera the you can go up to about 1/4000 of a second or 1/4000s for short. Most camera's will also go down to about 30 seconds, also shown as 30s or 30".
But what shutter speed do you use? Well that depends on what you're photographing, the light conditions and the effect you are trying to make. Shutter speeds up to about 1/125s will freeze action, 1/60s is about the slowest shutter speed you can use for hand held photography without getting blur and shutter speeds between 1/30s and longer will increase the chance of blur in to photo and camera shake.
shutter speeds
shutter speeds

[ Click here to read more ]
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Apertures

April 29th 2011 08:01
Aperture refers to the size of the hole in the bottom of the lens, much like the iris in your eye (the coloured bit). You may also hear aperture referred to as the f number or f stop but they're all the same thing.
Now the strange thing about aperture is the bigger the number the smaller the hole, likewise the smaller the number the bigger the hole. So this means that an aperture of f/2 is a massive hole whereas an aperture of f/32 is a tiny hole. This is down to the fact that f is substituted for the focal length of the lens to find out the size of the hole.
Aperture
Aperture

[ Click here to read more ]
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Exposure

April 27th 2011 23:57
OK so first thing you need to know about switching to manual is exposure.

Ever had a photo come out completely white or completely black? Thats the wrong exposure. But how do you determine the right exposure? Well thats what I'm here to tell you


[ Click here to read more ]
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Why to switch out of auto

April 27th 2011 16:26
The camera is an easily available piece of equipment to near enough everyone nowadays. Even if you don't own a camera you more than likely know someone who does.
Also a lot more people are buying professional spec DSLR camera's but using
auto mode
auto mode
them as they would a simple "point and shoot" camera and just keeping them in auto or IA modes. But why move out of that mode you may say. Whats wrong with the pictures I'm taking in auto? They look fine to me. Well yes if you're saying that you're right. The pictures are fine. But. You are not unlocking the full potential of your camera.
If you want to take pictures of things that happen in a fraction of a second like a drop of water falling into a glass or a car speeding round a race track or even a runner.
water drop

[ Click here to read more ]
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