Find out your lens ’sweet spot’
May 7th, 2010
Lenses giving a various sharp image of the surface depends on several things. All lenses have also areas where they are most sharply over the entire image area so-called “sweet spots”. It is important to know their equipment and use it as efficiently as possible. You can easily find out which area your particular lens gives the best pictures.
It is easiest if your lens is a fixed lens. Then, simply find the aperture settings that give those really sharp images. It allows you to easily search your way through if you set the camera to “Aperture” mode or “Av” as it tends to be on camera. Then choose a strictly contrast rich motif and take pictures with different aperture positions. You can then easily see which aperture that give the best pictures. Experiment with different images and get to know your equipment properly.
You can also find out where your lens is at its best through hand -SLR-gear which they have conducted tests of different lenses. If you are lucky you will find that your particular lens has been tested. I recommend strongly that the course you buy a fixed 50mm normal lens that has a brightness at 1.8 which is the smallest aperture the lens can handle. I have the Canon and the 50mm: 1.8 II has been tested and you can clearly see that the 8.1 aperture mode so do not look so good blurindex. However, the lens is smooth and well blurindex a wide aperture range from 2.8 and upwards. Here you will get sharp images over the entire surface.
A zoom lens is much trickier to find sweet spots in practice. You must of course try different shutter speeds and see how great the focal length to act against different aperture. Is it slower shutter speeds so you can find the best sharpness in the upper segment. I have noticed that my Sigma APO 70-300:4,5-5,6 has the best sharpness at shutter speeds around 180-250mm aperture and then with the 8 and up.
Now to catch the best photos you should always keep within the best area. Photography is an art form, but we need to learn your equipment. That is what is your paintbrush and your colors. You can not create good images if you do not get to know the conditions.







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