I recommend the spittoon. The shot of the spittoon in f/ 1.8 is really uncovered, and the background is easily melted, especially if you have only used one ferrule before, you will be fascinated by the shallow depth of field of the spittoon. As for the optical quality, the small spittoon is actually quite good, and the double Gaussian structure ensures better imaging quality. Of course, compared with all kinds of bull's-eye heads, it is definitely a spike. f/ 1.8 is definitely a little soft and impossible to be sharp, but considering the price of small spittoons, there is nothing to say. As for workmanship, it's really average. If the plastic shell falls on the concrete floor, it may break. The focus motor is also loud. After all, it is a cheap lens. As for defocusing, I think it has more to do with the fuselage Sometimes the same lens will run on the low-end fuselage, but the high-end fuselage is very accurate. It's not a big problem to run out of focus. Just pay attention when you buy it, and then buy it after the test.

Although the 40/2.8 biscuit is portable, the aperture is only f/2.8, which is one and a half files worse than the small spittoon, and there is a big gap between blur and weak light ability. And although the 40 cookie lens itself is portable, I don't think the relatively huge SLR body has much portability. Of course, it must be admitted that 40 biscuits will have higher definition than a small spittoon under the same aperture.