Broadband green film: Also called anti-reflective green film in some places, it is currently one of the best coatings in China. Different color bands will appear when observed at different angles (this is a multi-layer coating) performance), the imaging is good and clear, and the color reproduction is also good.
Many friends are confused about which one is better, the FMC version or the SMC version of Shark W1, and whether it is worth spending an extra 100 yuan to buy SMC. The only seller on Taobao will not introduce it to you in detail. He only introduces SMC on the product details page.
This is the FMC version and SMC version of Shark W1. In fact, the appearance and internal structure of the two models are exactly the same! Check it out, the appearance and internal structure are exactly the same. The only difference is that the outermost coating of the objective lens and eyepiece, that is, the outermost layer of the objective lens and eyepiece of the assembled telescope, is different from the coating that is in contact with the air.
The FMC version is full surface multi-layer coating + full broadband green film. That is to say, except for the prism group, all other lenses are coated with multi-layer coating + broadband green film. Prism set, phase film + silver plating.
Under the premise that the SMC version is exactly the same as the FMC version, at the outermost edge of the objective lens and eyepiece (the mirror surface that we directly see in direct contact with the peripheral air), there are two objective lenses and two The outer edges of the eyepieces, a total of four lenses, are coated with an extra layer of ultra-wideband green film (the 100 yuan price difference between the two models comes from the fact that these four surfaces are coated with ultra-wideband green film).
If two objective lenses and two eyepieces are provided with additional coatings on the outer edges, how much will the factory’s cost increase? Not including the technology usage fee, it is about 2 to 3 yuan. However, the factory will charge an extra 10 yuan or more than a dozen yuan from the Taobao seller who orders this product. And this additional cost of more than ten yuan will be an increase of 100 yuan in the hands of our consumers. But we can’t say anything because this is the market and this is business.
In fact, either of these two models will work, and there is not much difference in effect. However, in some special circumstances, the advantage of SMC's extra layer of ultra-wideband green film may be shown. The simplest ones, such as: When used at night, it will be a little better than FMC. Or maybe you won’t notice the difference at all.
Only one thing is certain: the effect of SMC may be better than that of FMC, or it may be exactly the same as FMC, but it will not lose to FMC. It depends on whether you can use the 100 yuan you keep for yourself.
Supplement: The real SMC coating is Pentax’s patent. And most of them are used in the coating of camera lenses. The SMC version of Shark W1 is not SMC seven-layer coating in this sense. Instead, a layer of coating is added to the outermost edge. (This article is excerpted from Mountain Hunter)