August 11, 2020
AFD：Arc-Form DriveArc DC motor is developed for AF drive of early EF lens. Unlike the USM motor, the AFD motor focus has sound. DO: Multi-Layer Diffractive Optical ElementCanon announced on September 4, 2000 that it had successfully developed the world's first "multilayer diffractive optical element" for use in a camera lens. The multi-layer diffractive optical lens...
August 10, 2020
When everyone started using DSLR lenses, I felt confused: What does the name Canon EF 70-200mm f/4.0 L IS USM mean? What is Nikon DX AF-S NIKKOR 18-55mm 1:3.5-5.6 GII ED? This string of abbreviations is almost like a strange language to novices. Today, let us use some lens labels from Canon and Nikon to tell...
August 9, 2020
How to know the parameters of lens?Each manufacturer has its own definition. Take the above Nikon lens as an example. The lens is DX AF-S NIKKOR 18-55mm 1:3.5-5.6 GII ED DX: Nikon has developed a format for its "non-full-frame cameras", which corresponds to cameras with smaller light-sensitive components, so that the lens can be made smaller...
August 8, 2020
Many friends who want to buy DSLR cameras often see a term "Kit Lens" on the website. In fact, what is Kit Lens? What is special about Kit Lens? Is it worth buying? What is Kit Lens?First of all, we need to know that the lens of a single-lens reflex camera (DSLR) can be replaced. Therefore,...
August 7, 2020
What are prime lenses and zoom lenses?Most ordinary Defocus Control (DC) lens can also "zoom far and zoom near" to compose pictures. It is indeed very convenient. In the world of digital single reflex (DSLR), the lens can be replaced. Of course, there are also this kind of lenses that can zoom near and far, but...
August 5, 2020
When you buy a lens or search lens information on the Internet, you may find that some zoom lenses are particularly expensive, and unlike ordinary zoom lenses, there are 3.5-5.6 and other numeric strings. Instead, you only see a number such as f/2.8, f/ 4 Wait, do you know what is special about those lenses? Let’s...
August 4, 2020
The term Full-frame has recently become popular again due to the appearance of relatively cheap FF DSLRs such as Canon 5D and Nikon D700! So what is Full-frame? Not all DSLRs have the same format? In fact, you should have read the terms Full-frame and APS-C in newspapers and magazines. Now let’s take a look at...
In photography teaching for many years, I have seen a lot of students switch to DSLR and shoot with the camera when they see the picture they like. Unfortunately, the photos taken are blurred due to various reasons, making the resulting effect better than using the old style. The point-and-shoot camera is even worse. After reading...
August 3, 2020
Canon M Av Tv P Mode In some higher-end DCs and all DSLRs, you can also see the options of M Av Tv P and AUTO. So what exactly do these English words represent? M (Manual Mode)-Full manual mode: both aperture and shutter speed can be set by the user. If you need to fully control...
August 2, 2020
Many friends who are new to photography may have heard the three terms "aperture, shutter and ISO sensitivity", but it is also difficult to clearly understand their meaning and interaction. For example, your aperture setting is wrong (for example, using a large aperture). (Or small aperture), even if the shutter and ISO sensitivity are at the...
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