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Photography basics: Depth of Field and composition
Depth of field is the range within which focusing is resolved in a photo.
Aperture has a huge affect on to the depth of field.
Changing the f-stops (f/#) of a lens will change aperture and as such the DOF.
f-stops are a just certain number which is telling you the size of the aperture. That’s how f-stop is related to aperture (and DOF).
If you increase f-stops, it will increase DOF, the area in focus (and decrease the aperture). On the other hand, decreasing the f-stop it will decrease DOF (and increase the aperture).
The red cone in the figure is an angular representation of the resolution of the system. Versus the dotted lines, which indicate the aperture coverage. Where the lines of the two cones intersect defines the total range of the depth of field.
This image explains why the longer the depth of field, the greater the range of clarity.
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VSDC Free Video Editor
http://www.videosoftdev.com/free-video-editor
Video stabilization tool
Footage taken from drones, action cameras or other devices on the go often needs improvement. VSDC Stabilization tool, as your virtual tripod, helps remove jitter or any other shaking effects, caused by camera movement and turn it into a much smoother video image.YouTube uploader
VSDC Free Video Editor not only provides ready-made profiles for exporting to social networks, but also offers you to upload your video directly to YouTube right from the app without switching windows or tabs.Built-in DVD burning tool
The editor comes with a DVD burning tool, allowing you to easily burn the results of your work to optical discs.Video File Converter
The application is designed to quickly convert video files from one format to another. It has some basic features for editing videos: removing unneeded segments, splitting your video into parts, and merging several files into one.Desktop video capture
The video editor features a desktop video capture utility that saves captured footage to a video file for subsequent processing in the editor.Video capturing
Another feature of the our editor is the ability to capture video from various video tuners, webcams, IP -
Scanning electron microscope macro images
A scanning electron microscope image of spider silk glands making a thread originally from Dennis Kunkel Microscopy.
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