Which lens has the best dispersion control?
The folding lens used the principle of light reflection and used a colorless reflective surface to replace the reflective surface with colored dispersion, so the dispersion control was better. However, it could not be simply determined that it was the lens with the best dispersion control because different lenses would have different dispersion control performance under different usage scenarios and different shooting requirements. For example, the Nikon Z-mount 85mmF1.8S lens had a good dispersion control performance, but it was not fully compared with all the lenses in terms of dispersion control, so it was impossible to determine which lens had the best dispersion control. Read more exciting novels for free
How to adjust the aperture of a lens with good dispersion control
The aperture of a lens with good dispersion control was adjusted in a similar way to other lenses. There were blades around the aperture of the lens. Through these blades, the aperture could be opened and closed to control the amount of light entering. Only the light that passed through the aperture could continue to move forward. Some lenses might have special designs. For example, some lenses had two paddles at the end of the lens, which needed to be stuck with the body bayonet or the structure on the transfer ring before the aperture could be adjusted. In the single-lens state, the aperture was always open. There were also lenses whose control ring function could be customized. The aperture adjustment function could be assigned to the control ring of the lens, and the aperture could be adjusted through the control ring. However, in general, the dispersion control effect of the lens was not directly related to the aperture adjustment method. The two were two different characteristics of the lens. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Nikon lens dispersion evaluation
Among Nikon lenses, some lenses that used ED (Extra-low Dispersion) lenses performed better in terms of dispersion control. For example, the Nikon Z14 - 24mm F2.8S had luxurious materials, excellent distortion, dispersion, and ghost control; the Nikon Z100 - 400mm F4.5 - 5.6 VR S lens had excellent anti-glare, dispersion, and dark angle control; and the Nikon Z-mount 100-micro lens had heaven-defying dispersion performance. However, even though Gold Wide-angle, Silver Wide-angle, Small Cannon, and 28 - 70 Old Mirror Emperor had many ED lenses, they still often had purple edges, indicating that the dispersion control was not perfect. In general, different Nikon lenses had different performances in terms of dispersion control based on their positioning, price, and technical application. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the problems with lens dispersion and glare?
The lens dispersion was caused by the lens not focusing light of different frequencies into the same focal plane, or the degree of amplification of light of different frequencies was different. It could be divided into "vertical aberrations" and "horizontal aberrations." The lens showed that the degree of dispersion of the glass would lead to different degrees of color aberrations. Because the camera lens used white light to form an image, and white light was composed of different wave-length visible light. Different wave-length visible light passed through the glass at different speeds and had different refraction index. After the light passed through the lens, it was similar to a prismatic mirror effect. Different wave-length light could not be focused at the same focal point, forming dispersion (purple edge phenomenon) on the image. In theory, it could happen in the center and edge of the image, but the optical path at the edge was long, and the dispersion was more obvious. The short wave-length had high refraction index, and purple was sensitive to color difference. The purple edge usually spread from the inside to the outside, and the optical path of the telephoto lens was long, so the dispersion phenomenon was easy to see. The lens glare was caused by the light spreading and reflecting inside the lens. The camera lens was composed of many individual lens units. When the light passed through, most of it passed through directly, and some of it was reflected back by the lens surface. This internal reflection of light reached the sensor and formed a lens glare. It was manifested by the appearance of light spots and fog in the photo, which would reduce the contrast and saturation of the photo. The glare of a zoom lens was more serious than that of a fixed-focus lens because it had more lens units, so the light spread and reflected more. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The difference between lens glare and dispersion
Glare and dispersion are two different phenomena in lens optical aberrations. The lens glare was caused by the light spreading and reflecting inside the lens. The camera lens was composed of multiple individual lens units. When light passed through these lenses, most of it would pass through directly, and some of the light would be reflected back by the lens surface. A portion of the reflected light inside the lens would eventually reach the sensor, forming a light spot, which was the lens glare. Glare would cause light spots and fog to appear in the photo, which would reduce the contrast and saturation of the photo. Dispersion refers to the phenomenon that light of different colors (different frequencies) cannot be focused on the same point after passing through a lens. This was because different colors of light had different degrees of refraction in the lens, resulting in differences in their positions on the image plane. In terms of imaging, it might appear as colored edges at the edges of the image, affecting the clarity and color reproduction of the image. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What does the dispersion of the single-lens reflex lens mean?
Dispersion in an SLR lens referred to the fact that the lens glass had a different refraction index for different colors of light, resulting in different colors of light being unable to be accurately focused, and different colors of light would appear in the edge area of the image. Major lens manufacturers and optical researchers put in a lot of effort to introduce Canon, Nikon, Tamron and other low-dispersion glasses. Canon also made fluorite lenses to solve the dispersion problem. When the lens was not made of low-dispersion glass, the dispersion problem could also be solved by avoiding backlighting, reducing the aperture, and post-adjustment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the effect of the filter that controls the lens dispersion?
In photography, the filter that could control the lens 'dispersion was mainly an ultra-low dispersion filter. Although there was no comprehensive explanation of the function of such a filter, the function of the filter was usually to improve the effect of the image. Just like how the CPL filter could reduce glare and increase saturation, the ND filter could extend exposure time, and the GND filter could control the gradual change of strong light and reduce vignette, the ultra-low dispersion filter could control the dispersion phenomenon to prevent the image from color dispersion and other problems caused by dispersion, thereby improving the image reproduction, making the image more in line with the shooting expectations in terms of color and clarity. It played an important role in photography scenes that required high color accuracy and picture purity. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Dispersion dynamic control reaction model
Diffusion - kinetic - controlled reaction model <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Does Nikon 24mm lens generally have dispersion function?
No, for example, the Nikon 24mm F1.8 lens used ED glass lenses to reduce the degree of dispersion. From the measured results, when the aperture contracted to F2.8, the dispersion was basically suppressed. The lens had excellent dispersion performance. The Nikon Nikkor Z 24mm f/1.8S lens was equipped with an ultra-low dispersion lens. The Nikon Z24 - 200mm F4 - 6.3 VR had two low-dispersion ED lenses. All of this indicated that the Nikon 24mm lens did not generally have a difficult to control dispersion, but there were measures to control the dispersion or its own dispersion control performance was better. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Dispersion reaction elemental order
Generally speaking, wind elemental characters would have fire elemental, water elemental, thunder elemental, and ice elemental, while wind elemental travelers would have ice elemental, fire elemental, water elemental, and thunder elemental. Furthermore, the water element had the highest priority among the dyeing elements. The other three elements (fire, ice, and lightning) had random priority. At the same time, the priority of the wind reaction was hidden water/hidden ice> frozen element. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Control the size of the light passing through the camera lens
In photography, the aperture controlled the size of the light passing through the lens. The aperture was located inside the lens and was an adjustment opening. Its size was represented by the f-stop (f-value). The smaller the f-value, the larger the aperture opening and the larger the light space, allowing more light to enter; the higher the f-value, the smaller the aperture opening and the smaller the light space, allowing less light to enter. This control of the size of the light space had an important impact on the exposure and depth of field of the photo. For example, in a low-light environment, you can use a larger aperture (small f-value) to get more light to avoid the photo being too dark; in a bright environment, use a smaller aperture (large f-value) to limit the amount of light to prevent the photo from being overexposed. And a large aperture (small f-value) could produce a shallow depth of field effect to blur the background to highlight the main body, while a small aperture (large f-value) could provide a deep depth of field to keep multiple objects in the picture clear, suitable for shooting scenery or group photos. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>