iphoto aperture

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 Ta

A. What is EXIFExif (exchangeable image file) is an image file format that has exactly the same data storage as the JPEG format. In fact, the EXIF format is a digital photo inserted in the header of the JPEG format. Including the aperture, shutter, white balance, ISO, focal length, date and time, and other shooting conditions as well as camera brand, model, color coding, recording sound and the Global Positioning System (GPS), thumbnails and so on. Si

First to understand what is the image of EXIF information EXIF is an image file format that has exactly the same data storage as the JPEG format. In fact, the EXIF format is a digital photo inserted in the header of the JPEG format. Including the aperture, shutter, white balance, ISO, focal length, date and time, and other shooting conditions as well as camera brand, model, color coding, recording sound and the Global Positioning System (GPS), thumbn

Original date time (seconds) Subsectimedigitized Original date time digitization (seconds) Exposuretime Exposure time Fnumber Aperture value Exposureprogram Exposure Program Spectralsensitivity Spectral sensitivity Isospeedratings Speed Oecf Photoelectric conversion function Shutterspeedvalue Shu

) Subsectimedigitized Original date time digitization (seconds) Exposuretime Exposure time Fnumber Aperture value Exposureprogram Exposure Program Spectralsensitivity Spectral sensitivity Isospeedratings Speed Oecf Photoelectric conversion function Shutterspeedvalue Shutter speed Aperture

gradient contour. According to the test, the distance between two purple crosslines in Figure 3.31 is very close to 40 pixels (the error is within 1 pixel ). You can test the effects of other pixels or try to make the values of fuzzy X and fuzzy y different by 3.32. Figure 3.32 case where fuzzy X is not equal to fuzzy y When the Blur value does not exceed the square size, the size of the gradient area is basically the same as that of the Blur value, and the error is less than 1 pixel. Another

When walking multilayer board, often need to hit the hole, then how to classify the hole? and look down.(1) Through-hole: this hole through the entire circuit board, can be used for internal interconnection or as a component of the installation of the locating hole (for connecting layer; Creating a drilling file, punching on the PCB and electroplating in the hole, usually much larger than the signal line);(2) Buried hole: refers to the printed circuit board in the inner layer of the connection h

How to read EXIF information from a photo in PHP, First to understand what is the EXIF information of the picture EXIF is an image file format whose data storage is identical to the JPEG format. In fact, the EXIF format is the insertion of digital photos in the head of the JPEG format, including aperture, shutter, white balance, ISO, focal length, date and time, and shooting conditions as well as camera brand, model, color coding, recorded sound duri

blue snow falls in the airFalling hollow circleOne-hand ImageMeteor flying from far and nearSnow falling from a black backgroundColorful light (full screen)Colorful light (full screen)Flashing small vertical barsA peaceful pigeon Flying WingsBlue background, blue bubbles, slowly risingThe light blue bubbles on the white background are slowly risingColorful aperture that follows the mouse swimmingLine DeformationBlue RotationDigital Clock with mouse R

positions, and at a certain point on the edge, the sharp drop, the so-called "abrupt stop", this is a good shot. 4. The rest is easy to handle. You only need to remember that the coarse line is "pipe contrast" and the thin line is "pipe resolution "; the black line is "maximum aperture" and the blue line is "f8 aperture". Because the resolution and contrast are different in different directions, the solid

20. The head was unable to stand the deformation of 14mm/2.8D, and then finally sold. 14-24/2. 8g is too big and too heavy to carry and finally sold,Let me buy 20mmF2. 8D. I wanted to buy 20mm for the AIS version. I found a brand new one, so I finally bought it at a price of around yen.This 20 sets, has a good color performance, good portability, anti-glare ability can be said to be quite good! But the biggest problem with this header is that the resolution of the corners under the large

, commonly used Oz (oz) as the thickness of the copper Unit, 1 oz copper thickness is defined as 1 square feet area of copper foil weight of one Anglo, corresponding to the physical thickness of 35um;2oz copper thickness of 70um.C. Circuit operating voltage: The setting of the line spacing should consider its dielectric strength.D. Reliability requirements. When reliability requirements are high, they tend to use wider cabling and greater spacing.E. PCB Processing Technology LimitationsDomestic

Summary: The Envisat satellite, one of the ESA satellite-to-ground observation satellites, was launched on March 1, 2002. The satellite is the largest environmental satellite ever built in Europe. The star is loaded with 10 detection devices, 4 of which are improved by the ER s-1/2 device, the largest of which is advanced synthetic aperture Radar (ASAR), which generates oceans, coasts, polar ice caps and ...The Envisat satellite, one of the ESA satell

NikonHttps://sdk.nikonimaging.com/apply/compmail.doDIGITAL-SLR cameras We is offering Library Programs and Command API specifications for software applications th At offer remote control functions for Nikon DIGITAL-SLR cameras connected to a computer. When these is utilized, the software application can be used to modify camera settings, including shutter speed, aperture , and ISO sensitivity, and to control camera operations, including shutter releas

Dip pad Making:1. Launch pad Designer.2.New a pad, take a name. Round through hole rectangular pad4_0r2_3cir1_5md, round through Hole square PAD4_0SQ2_4MD, round through hole round PAD5_0CIR3_0MD, circular through hole finger-shaped p2o4x1_4cirmd, finger-shaped through hole p1_8o3_0x1_0o2_ 0MD, no solder disc round through hole nvia1_5mcir, no pad square through hole nvia3_0msq, no pad rectangular through hole nvia7_6rec1_7m, through the hole line via24cir12m.3. In the Parameters tab, a) plating

None of the lenses are absolutely perfect and need to be addressed and improved through software or firmware upgrades, which involves lens correction. The lens correction of the SLR camera is mainly peripheral light correction, chromatic aberration correction and lens distortion correction, the peripheral light is being taken in the camera, and the chromatic aberration correction and lens distortion correction need to be done by random software.One, peripheral light volume correction operation.

depends on the characteristic value of M, for corner points | r| large, flat area | The r| is small and the edges R is negative.1.2 Detailed Description: see the Appendix in the PPT1.3 Algorithm stepsAmong them, the local maximum can be expanded after the first comparison with the original method to obtain, see the two sources in detail.Second, OPENCV code implementationHarris class#ifndef harris_h#define harris_h#include "OPENCV2/OPENCV.HPP" class Harris{private:cv::mat cornerstrength; OPENCV

same intersection. Therefore, we may wish to use the golden splitting to make the shooting diversified. 8. capture details You can use a wide-angle lens to take a large number of scenes, but such shooting will cause you to lose a lot of details, especially meaningful details. So sometimes the zoom lens should be used to make the screen smaller and capture interesting small pictures. 9. Pre-focus shooting of Characters When shooting a person, you can wait for the rabbit to determine the shooting

enterprises. Then how does dingtalk's latest C1 smart wireless router integrate and interact hardware products with software? What kind of network experience does it bring to users? Dingtalk C1 smart wireless router appearance Appreciation Dingtalk C1 smart wireless router outer packing First, let's talk about the appearance of dingtalk C1 smart wireless router. I have to lament its exquisite appearance.

, for a flexible transparent tissue accounted for the eyeball wall area of 1/6, light through the cornea warp ray refraction into the eye.▲ Water Crystal (Lens):The posterior transparent double convex lens of the iris, the curvature of the two surfaces is different, the thickness 4mm,9mm diameter warp ray rate by ciliary muscle (ciliary Body) contraction and change.Vision principleThe human eye can basically be seen as an opaque darkroom contained within the sclera. It has a refractive optical s