t4i lens

Note: The article is translated from http://wgld.org/, the original author Sambonja 広 (doxas), the article if there is my additional instructions, I will add [Lufy:], in addition, The WEBGL research is not deep enough, some professional words, if the translation is wrong, you are welcome to correct. Basic functions of coordinate transformation matricesFor basic 3D rendering, it is necessary to prepare 3 coordinate transformation matrices, which have been mentioned many times in previous articles

lost, but refers to the color of the sky and the overall picture effect performance. To make the sky blue more prominent, click on the "Brightness" tab, slide the Blue slider to "-52", so that the blue dim, the sky color and the clouds have a clear contrast. Through this series of adjustments, the color of the sky in the picture is perfectly reproduced. LENS correction function As a result of the lens of

Give the photographers a detailed explanation to share a tutorial on Canon 5DMarkII shooting as a miniature landscape photo. Tutorial Sharing: The state of the lens If you use a general shot to take a picture of the scene, even if the maximum aperture, if the shooting distance, the entire screen will be basically in the range of the focus, resulting in a similar effect of pan-Coke. The illustration is taken at the 3

To the photography enthusiasts to share a detailed analysis of the Canon 5DMarkII to the depth of the subject to more effectively focus on the shooting tutorial. Tutorial Sharing: Zoom in to show the Red box section. Aperture value in the F4, the depth of the screen did not get the focus, there was a virtual. Although the front of the statue is burnt, but from the number of the third statue has been a virtual, the river was greatly falsified. If you want to be able to complete the wh

　　OPPO R7(2499 yuan) OPPO R7 Front with a 5-inch capacitive touch screen, the resolution is 1920x1080 pixel FHD level, the display effect is good. The core is built with a MediaTek MT6752 eight core processor and a 3GB RAM+16GB ROM memory combination that runs smoothly based on the Android 4.4 version of the Color OS 2.1 system. The back of the fuselage also has a 13 million-pixel main lens, including LED lighting, and its corresponding 8 million-pix

Using near-loop (extension tube) Near-loop is one of the inexpensive options, its principle is simple, that is, the distance between the lens and focal plane, creating a magnifying effect. The different thickness of the close-loop has different amplification effect, many times to see the near-loop is a group of three of the way to sell. Because the close loop is actually just a cylindrical ring, there is no optical structure inside, so ... Buy a depu

, stroke, free transform, transform, image size, canvas size, rotate canvas, cut and trim. • File format: includes PSD, PSB, HDR, PFM, OpenEXR, TIFF. • Filters: Includes average, Box Blur, Gaussian Blur, Motion Blur, radial Blur, Shape Blur, Surface Blur, Add noise, fibers, Lens Flare, Smart Sharpen, Unsharp Mask, De-interlace, NTSC Colors, High Pass, Offset. • Color mode: RGB, grayscale, transform to 8-bit/channel or 16-bit/channel. • Tools: Marquee

The pre-project realizes the role movement, now needs to complete the lens to follow and control.First, the lens of the followingThe idea is simple, first get the lens initial and character distance vector value, and then let the camera and the character to maintain the distance of the vector. The script is as follows:NameSpace FollowplayerPrivate Transform playe

Camera CalibrationCamera calibration: Simply speaking, it is the process of acquiring camera parameters. Parameters such as: in-camera parameter matrix, projection matrix, rotation matrix and pan-shift matrix, etc. What is camera parameters? Simply put, the real world of people, objects, shot into a picture (two-dimensional). The three-dimensional coordinates of a person or thing in the world, and the relationship between two-dimensional coordinates in the image. What is the repres

high enough, you can paste the aluminum foil used in the kitchen on the thick paper to improve the reflectivity. In addition, there is no limit on the number of reflectors used. You can use multiple reflectors at the same time.Step 4: Display gridlines to adjust the chartWhen taking a product photo, it is very important to eliminate the skew and deformation of the subject. Therefore, use a lens with a shorter focal length to avoid deformation. Grid l

For example, a Chinese character will only be counted as a byte, in typesetting, if all is Chinese characters, say, anyway, no difference, but if the string has been manipulated by Chinese characters and English letters, it is inconvenient, the following three functions can replace the ASP's own related functions. There are also areas of attention, if used in a loop, because the invariant "I" is also a variable that is often used for loops, the value of "I" will change when the following functi

To the photographic enthusiasts to share a detailed interpretation of the Canon 5DMarkII photography of the city's exquisite night photos of the tutorial. Skill Sharing: Filming the exquisite and beautiful night scene of the metropolis, the camera setting is more exquisite. must be prepared in advance, and be flexible in the use of camera and night photography related knowledge. I hope everyone can make a beautiful night works. Set the sensitivity to ISO 100 and suppress the noise to

way is to make sure your subject is looking directly at the lens and making eye contact eagerly. Direct eye contact is an important aspect of everyday communication, and a relatively simple way to do this is to make sure that the subject and its attention are attracted to your camera. There are many ways to emphasize your eyes. The use of mascara and other eye makeup is one of the methods, and another way is to make the object directly to the camera

Have you ever had a large, purple-edged picture of your lens? In fact, you only need to use the PS of Adobe Camera Raw in the lens correction function, a few steps to improve these problems, so that "dog head not dog." Common wide-angle zoom lens to take photos, the edge of the screen should be straight lines because of distortion and bending, white frame with p

GN value in its specification. The so-called GN value, generally refers to the flash lamp in the equivalent focal length of 50mm, ISO100 of the output degree of the reference value. The effective distance of the flash output can be calculated by combining the GN value and the aperture value, and the formula is as follows: Effective distance = The GN value of the flash light/lens aperture setting value Take Canon 430EX II For example, its GN value i

for exposure. The Shadows (shading), brightness (brightness), contrast (contrast) are also set to Automatic, and the resulting results are shown in Figure 40. Third, lens correction filter The new lens correction filter (Lens correction filter) corrects defects in the lens distortion of a common camera, s

Introduction to contrast focus, phase focus and triangulation focus principle and differenceContrast focus: Use the algorithm to identify the contrast of the screen and confirm the focus success when the contrast is highest. As the focus lens begins to move, the screen becomes clearer and the contrast begins to rise; when the screen is clearest and the contrast is highest, it is already in the charred state, but the camera does not know, so it will co

Angle of View The same concept as field of view 35mm equivalent focal length Crop factor The termsCrop factorAndFocal length multiplierWere coined in recent years in an attempt to help 35mm film formatSlr photographers understand how their existing ranges of lenses wocould perform on newly introducedDSLR cameras which had sensors smaller than the 35mm film format, but often utilized existing 35mm film format SLR lens mounts. Ultra-wide

12 "animateTest"style="-webkit-transform: perspective(400px) rotateY(40deg);"> Css 12 "animateTest"style="-webkit-transform: rotateY(40deg) perspective(400px);"> If you are not sure, please listen to me.The transform in CCS3 is a great tool for setting up interface styles and animations. The 3D transforms are also supported in Chrome and FF. IE9 not supported, IE10 support.As long as the 3D scene will involve perspective

; key frame extraction is a subsequent feature extraction. The premise of index establishment, the merits and demerits of the algorithm will directly affect the accuracy and performance of the whole video analysis.Key frame Extraction MethodsKey frame extraction methods are mainly divided into two categories: The method based on the whole image sequence and the method based on compressed video;At present, most of the key frame extraction research is based on the full image video analysis. The di