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1. focus with a long focal length. When using a zoom lens, the correct focus method is to first focus with a long focal length, and then select a proper focal length for shooting. Because the maximum and minimum depth of field of the image to be taken during the long focal length, this facilitates accurate focus. In the case of complex back-to-light or light, it also helps to select the appropriate local light measurement, without approaching the subj

Have always wanted to write a picture to zoom in and zoom out of the gadget, originally thought it would be very complex, these days I think about it, the original is so easy ah. The current implementation of the zoom reduction, mainly based on the mouse wheel trigger events to achieve, less nonsense to say directly on the source.For the source code, do a few not

Touch.java The code is as follows Copy Code /*** Picture browsing, zooming, dragging, centering automatically*/public class touch extends activity implements Ontouchlistener { Matrix matrix = new Matrix ();Matrix Savedmatrix = new Matrix ();Displaymetrics DM;ImageView Imgview;Bitmap Bitmap; Float minscaler;//Minimum zoom ratioStatic final Float Max_scale = 4f;//maximum Scaling static final int NONE = 0;//initial statestati

To the photographic enthusiasts for detailed analysis to share the Canon IXUS140 camera optical zoom magnification. Analytical sharing: Canon IXUS140 has 5 times times optical zoom and 4 times times digital zoom. Well, the above information is small knitting to all of you photography enthusiasts brought to the detailed Canon IXUS140 camera optic

-Some sites on the home page background map size does not vary with the browser zoom, such as Baidu Personal version of the home page, after zooming the size of the background map does not change:Another example is the petal net (huaban.com):Now use CSS to achieve this effect.First need a large enough size picture, Baidu background map size of 1600*1000px (image address: http://4.su.bdimg.com/skin/12.jpg?2); the size of the petals background map is 16

To the photographic enthusiasts for detailed analysis to share the Canon SX240 HS camera Optical zoom magnification. Analytical sharing: Canon SX240 HS supports 20 times times optical zoom and 4 times times digital zoom. Well, the above information is small knitting to all of you photography enthusiasts brought to the detailed Canon SX240 HS camera Optical

Gesture recognition is important in iOS, and gesture manipulation is an important feature of mobile devices, greatly increasing the ease of use of mobile devices. 1, Uigesturerecognizer Introduction Gesture recognition is important in iOS, and gesture manipulation is an important feature of mobile devices, greatly increasing the ease of use of mobile devices. iOS system after 3.2, to facilitate the development of this use of some commonly used gestures, provides the Uigesturerecognizer class.

Now is the afternoon, I am still at work, the work is done, is testing, suddenly feel very confused, work for a year, still the same as the old, think of these can not help but to suck a cold sweat. So seize the time to look at my blog, update the content, sometimes do not force themselves, never know what the limits of their own. Today is a very basic and basic knowledge: animation. Animation is mainly divided into four kinds. 1. Zoom animation (scal

Previously seen are with IE zoom, So non IE is not supported, yesterday saw this Js in the mouse wheel event details, so fully compatible (IE6-8, FF, chrome, opera, Safari) the scroll and zoom effect of the mouse is born today. The default minimum scaling is 50% of the original image. View results in a new window The Code is as follows: /*! * Author: sohighthesky * Blog: http://www.cnblogs.com/sohighthes

This example shows the use of PHP's own GD library to zoom in and out of PNG and JPG images$target _width = 120; Target image width $target_height = 150; Target image Height $target_img = ' me.jpg '; Cut picture Deal ($target _width, $target _height, $target _img);/** * Get picture information, prepare parameters */function deal ($target _width, $target _ Height, $target _img) {$img _info=getimagesize ($target _img); Get the original size

Objective This chapter continues to improve the playback of the relevant player's core functions, for subsequent expansion lay a good foundation. Series 1.Android uses Vitamio to build its own universal player (1)--ready Body I. Achievement of the goal 1.1 Brightness Control Imitate the Vplayer interface: 1.2 Voice Control Imitate the Vplayer interface: 1.3 Screen Zoom According to the following API to provide the picture stretch, cut,

********************************************************************** Android to flip a picture ********************************************************************** Resources res = This.getcontext (). Getresources (); IMG = Bitmapfactory.decoderesource (res, R.DRAWABLE.AA); Matrix matrix = new Matrix (); Matrix.postrotate (180); /* Flip 180 degrees * /int width = img.getwidth (); int height = img.getheight (); IMG_A = Bitmap.createbitmap (img, 0, 0, width, height, matrix, true

To the photographic enthusiasts for detailed analysis to share the Canon 1200D focal length of the value and optical zoom magnification. Analytical sharing: Focal length Canon 1200D equivalent focal length is 29-88mm, the starting focal length is 29mm, the actual focal length is 18-55mm. Optical zoom Magnification Canon 1200D Optical zoom