Theoretically, if you divide the area of S by the unit area of this pixel, you can get the number of imaging pixels of the camera.
The camera's 1200w pixel 1500w pixel 1800w pixel, these tens of millions refer to the number of these pixels.
The spacing between these pixels will affect the imaging quality, so theoretically, the smaller the pixel size, the smaller the electromagnetic interference between points and the higher the imaging quality.
Question 2: What is the relationship between camera pixel size and pixel spacing? What is the pixel spacing of a camera with a pixel size of 12μm* 12μm? If it is completely filled, the pixel spacing is also 12um.
But what may be said here is gap, that is, the filling is incomplete and there are gaps between pixels.
Question 3: Hello about pixel spacing!
The pixel distance is easy to understand. No pixel arranges three RGB points in the horizontal direction. The horizontal geometric distance between the R point (or GB) of a pixel and the R point (or GB) of the next pixel is the point distance, and the common industrial standard is 0.264 mm
Ordinary 15 inch LCD screen is 1024*768pix. You can measure the total width in the horizontal direction with a ruler, and then divide it by 1024 to get the point distance. The vertical direction is the same.
Is that what you want to ask? The information is in the company. You can send some if necessary.
Question 4: What is the relationship between the pixel size of the camera and the pixel spacing of the captured image? The pixel spacing of a camera with the pixel size of 12μm* 12μm has no direct relationship with the unit pixel area of the SLR.
Question 5: Urgent! Urgent! ! Linear ccd chip has the smallest pixel spacing and the most effective pixels, and the measurement resolution is
The question is how many pixels the relative positioning of css moves up, and the distance between the next block-level element and it increases. Relative positioning is relative to its original position. If you only set relative positioning for him, he will move up, but the block-level elements behind him will definitely not move without positioning, indicating that the distance between them has increased. Your problem is that you don't understand the meaning of relative positioning. Relative positioning, whether moving or not, elements still occupy the original space.
Question 7: What is the pixel size and lens focal length of Sony A7R camera? effective pixels
36.4 million pixels
Zoom multiple
Depending on the lens
Digital zoom multiple
4x digital zoom
Extended zoom
Intelligent zoom: about 1.5 times or about 2 times optional.
Operator mode
With full manual function.
Sensor type
CMOS sensor, Exmor APS HD CMOS
Sensor size
35.9×24 mm
Sensor description
Color space: SRGB, AdobeRGB without low-pass filter.
Image forming apparatus
Bionz，X； Tricolor management
Photo resolution
3:2 (Quan Huafu)/3: 2 (APS-C) L (36m): 7360× 4912/L (15m): 4800× 3200m (15m): 4800×. : 2400× 1600 16:9 (Quan Huafu)/16: 9 (APS-c) l (30m): 7360× 4144/l (130m).
Lens parameters
Lens type
Replaceable lens
Lens bayonet
Sony E-mount, you can transfer the A-mount lens through LA-EA 1/LA-EA2 adapter.
equivalent focal length
Depending on the lens
Initial focal length
Depending on the lens
Actual focal length
Depending on the lens
Diagonal atrioventricular
Auto focus, manual focus, continuous auto focus, single auto focus, peak focus, eye priority focus, predictive focus control.
Focusing system
Fast intelligent autofocus (contrast detection autofocus system), 25-point contrast focusing.
Focus assist mode
LED focusing auxiliary light, about 0.3m-3.0m
hole
Depending on the lens
Screen parameters
LCD screen size
3.0 inches
LCD pixel
65438+229,000 pixels
Electronic viewfinder pixel
2.36 million pixels
LCD screen characteristics
Rotatable xtrafene LCD screen; You can turn up about 90 degrees and turn down about 45 degrees; Display: graphic display, displaying all information, but not information, digital horizontal ruler and histogram; Peak detection: supported (peak level: high/medium/low/off, peak color: red/yellow/white); Magnification: 5.9 times/1 1.7 times (Quan Huafu) and 3.8 times /7.7 times (APS-C).
Visual field rate
100% visual field rate
brightness control
Level 5
Viewfinder type
electronic viewfinder
Viewfinder description
Diopter adjustment: -4.0 to +3.0m- 1 magnification: 0.7 1 times.
Exposure control parameters
Exposure mode
Automatic exposure, program automatic exposure, aperture priority exposure, shutter priority, manual exposure.
Exposure compensation
Plus or minus 5 levels, increasing or decreasing by 1/3 or 1/2 levels.
Photometric mode
Spot metering, central button metering, multiple metering
photometry system
1200 regional photometry
ISO sensitivity
Automatic, 100-6400, which can be extended to 50 and 25600.
White balance mode
Automatic, sunny (daylight), cloudy, shadow, incandescent lamp, flash, custom, fluorescent lamp (warm white, cold white, daylight white, daylight), underwater automatic, color temperature/filter; Color temperature: 2500-9900K, with filter (G7-M7 15, A7-B7 15) compensation function.
Scene mode
Automatic, landscape, macro, sunset, hand-held night scene, portrait, sports action, night scene portrait, night scene, action anti-shake.
Video shooting parameters
Video shooting function
Support video shooting
Progressive speed of walking in unison
MP4、AVCHD、MPEG-4 AVC(H.264)
Video resolution
Avchd:1920x1080 (50p/average bit rate 28mbps) avchd:1920x1080 (50i/average bit rate 24mbps) avchd:1920. & gt
Question 8: Line-surface comparison of linear CCD For area CCD, it is widely used, such as measuring area, shape, size, position and even temperature. The advantage of area CCD is that it can obtain two-dimensional image information and the measured image is intuitive. The disadvantage is that the total number of pixels is large, but the number of pixels per line is generally less than that of linear array, and the frame rate is limited. The advantages of linear CCD are that the number of one-dimensional pixels can be done a lot, but the total number of pixels is less than that of area CCD camera, and the pixel size is flexible and the number of frames is high, which is especially suitable for the measurement of one-dimensional dynamic targets. Taking linear CCD on-line measurement of line diameter as an example, it has been introduced in many papers, but it is based on ideal conditions when it comes to image processing, and from the perspective of practical engineering application, the linear CCD image processing algorithm is quite complicated. Due to the limitation of production technology, the area of a single area array CCD is difficult to meet the requirements of general industrial measurement for field of view. Linear CCD has the advantages of high resolution and low price. For example, TCD 150 1C linear CCD has a photosensitive pixel number of 5 000 and a pixel size of 7 μm×7 μm×7 μ m (the center distance between adjacent pixels). The one-dimensional imaging length of linear CCD is 35 mm, which can meet the requirements of most measuring fields of view. However, scanning motion is necessary to obtain two-dimensional images with linear CCD. Generally speaking, these two requirements lead to the following shortcomings in acquiring images with linear CCD: long image acquisition time and low measurement efficiency; Because of the existence of scanning motion and corresponding position feedback link, the complexity and cost of the system are increased; The scanning motion accuracy may reduce the image accuracy and ultimately affect the measurement accuracy. Even so, the scheme of obtaining images by linear CCD still has its unique advantages in the following aspects: the cost of linear CCD plus scanning mechanism and position feedback link is still far lower than that of area CCD with the same area and resolution; The coordinate of scanning line is provided by grating, and the indicating accuracy of high-precision grating ruler can be higher than the manufacturing accuracy of pixel spacing of area CCD. In this sense, the accuracy of the image obtained by linear CCD in the scanning direction can be higher than that of the image obtained by area CCD. The newly emerging sub-pixel stitching technology of linear CCD can optically misplace the pixels of two CCD chips by 1/2 pixels along the length of linear array, which is equivalent to inserting all the pixels of the second CCD into the pixel gap of the first CCD in turn, indirectly "shrinking" the pixel size of linear CCD, improving the resolution of CCD and alleviating the problem that the pixel size of CCD is difficult to shrink due to the influence of technology and materials. Therefore, the scheme of linear CCD plus scanning motion to obtain images is still widely used, especially in the case of large field of view and high image resolution, even the area CCD can not be replaced. However, only high resolution can not guarantee high image recognition accuracy, especially the image obtained by linear CCD has high resolution, but its image is more special than that of area CCD because of the influence of scanning motion accuracy. Therefore, it is necessary to make full use of the advantages of high resolution and overcome the influence of scanning motion from the algorithm, so that the error of mechanical transmission will not directly affect the final image recognition accuracy.
Question 9: The response of infrared rays to rabbits is150m. The rabbit lens needs at least 50mm, the resolution is above 384x288, the pixel spacing is 25μm, and the price is more than 20,000 yuan!