iphoto aperture

threshold value. This point is the corner point.To avoid calculating eigenvalues (time-consuming), use the following formula instead:The determinant of the Det matrix, traces of the trace matrix. It has been proved that the value of this equation is higher when two eigenvalues are high. The parameter k is generally set to 0.05~0.5.Harris Corner detection, can be improved by maximal value inhibition, that is, to ensure that the strength of the corner is the local maximum value, the removal of th

The mode of the digital cameraa -stop aperture is preferred; the camera automatically configures the appropriate speed (e.g. requires depth of field and is convenient for shooting still life).s Gear speed is preferred; The camera automatically configures the appropriate aperture (for example, it is convenient to shoot moving objects) by you to determine the speed.p file program automatically, commonly known

' (length=4) ' Maxaperturevalue ' = = String ' 227/100 ' (length=7) ' meteringmode ' + int 2 Parameter description: ' filename ' = = $infoAll [' filename '], ' file modified time ' = ' date ' (' Y:m:d h:i:s ', $infoAll [' FileDateTime ']), ' File Size ' = ' Round ($infoAll [' FileSize ']/1024). ' KB ', ' exif file type ' = ' $this->getimgtype ($imgPath, ' exif '), ' mime file type ' = ' $infoAll [' MimeType ' ], ' find sections ' + $infoAll [' sectionsfound '], ' html image width ' = ' $infoA

dispersed;③ anti-jamming and reliability requirements;④ in order to cut expenditure, to the cost of a good control.2 Define the function of each layer according to the current trend and meaning of each layer3 turn off unused layers to facilitate layout and cablingPCB Cabling Rules Setting precautions1 line width-Different net can be defined separately2 selection of vias and determination of aperture3 text font and font size for silk screen printing4 Safe spacing:① between the line and the walk;

1. macro lenses can only take static objects It is designed for shooting very close distances, but some people say that it may cause quality degradation or superstition to be used only for remake or macro shooting.In fact, according to some optical tests, when shooting at or, the resolution of the macro lens has excellent performance in most aperture; in tests at or, the resolution is much higher than that of other non-micro-mirror headers with the sa

, if objects, e.g. small participates of bacteria, are in the object plane, light is laterally diffracted away from the straight path. provided that this light hits the aperture cone of the objective, it is gathered by the objective and fused to form an image. the object becomes brightly visible in front of a dark background. For this, it is necessary for the objective aperture to be smaller than the inner

In 1981, Nikon modified the full range of AI lens bayonet. The LAN chat software enables the LAN chat software with a mechanical approach to achieve aperture-first, the new shot after these modifications is the AI-s bayonet nikkor. The identification method is to use orange (orange) color numbers for the minimum aperture number on the aperture ring. In addition t

) In imaging, the meridian head is clearly imaged when it is called a plane, and the foreground and background of the focus are also imaged on the focal plane, as long as their imaging dispersion circle diameter is less than or equal to the allowable dispersion circle diameter, we will think it is clear, and this The range of the clear area is the depth of field. Depth of field: before and after the subject, the image has a clear range, and the scenes in this range are imaged on the f

to attract customers and reduce costs, but few pixels, the results show a poor effect. (Editor note: the size of the LCD screen of the camera is basically 2.5-inch. The size can be 0.11 million pixels or 0.23 million pixels. The resolution of 0.23 million pixels is higher, and the photo is more expressive) 10. It is possible to select a machine with a manual function as much as possible, so that you can use your creative talent to make a good shot of the art. If it's a pure dumb machine, you

I would like to share with you a detailed analysis of the mix of a Canon 600D camera with a fish eye.Analysis and sharing:We recommend that you purchase a Canon 15mm fisheye lens, which is cost-effective. At the same time, the Canon 15mm fisheye lens features extremely high resolution, excellent fisheye distortion, vivid color restoration, fast focus, and wide open sharpness with an aperture F2.8. Is a good fish eye lens. If you want to buy a fish eye

To the photography enthusiasts for detailed analysis to share the Canon 600D camera photography female portrait photos. Skill Sharing: Shooting data Ef-s 18-55mm f/3.5-5.6 is II/manual exposure (f4.5,1/60 sec)/ISO 400/white balance: Automatic The model sits on a chair by the window and shoots only from the natural light that is injected into the window. To achieve the desired effect, the aperture is set to F4.5. Shutter speed is set to 1/

I will give you a detailed analysis of the techniques used by the Canon 1100D camera to take an emotional static object.Tips:Shooting in full automatic modeEF-S 18-55mm f/3.5-5.6 is ii/fully automated (F5.0, 1/60 s)/ISO 800/white balance: AutomaticShooting in auto-exposure mode with aperture priorityEF-S 18-55mm f/3.5-5.6 is ii/Aperture Priority Auto Exposure (F5.6, 1 SEC)/ISO 100/white balance: DaylightSte

To the photography enthusiasts to the detailed analysis to share the Canon 7D camera photography Shore Gorgeous lighting scene photos of the tour. Tutorial Sharing: The shore of the night is generally beautiful, gorgeous lights reflected in the water, so that the scenery more dreamy color. On the shore to find the best location to shoot the night, set the camera to start serious shooting it. Taking the wide water as the foreground, photographed the night scene of the brightly lit. Wi

suitable for street photography, the following is from my experience to see why the fixed-focus mirror is more suitable for street photography. 　　 (Photo source: bh) Light Street photography usually has to walk all the time, the fixed-focus mirror is usually relatively small, light and easy to carry, with large zoom telescopic mirror for me it is like walking in the street walking dumbbells. 　　 Launch ~ (Photo source: Visualizeus) Big Apert