The difference between Pentax k30 and k50, and the lens problem.

It seems that you are not only blind in SLR, but also blind in photography-there is no concept of minimum focal length.

There is little difference between K30 and K50. The most important improvement of K50 is to improve the quick focusing ability, and at the same time it is more dustproof and waterproof. K50 has just come into the market, and its cost performance is relatively high.

The background color will appear when the paint surface is worn for a long time, but this is not a problem.

The main difference between 18-55mm lens and 50-200mm lens and 18- 135mm lens lies in the different focal lengths.

18-55 mwr is a cheap standard zoom lens, and its focal length covers our most commonly used small wide-angle to medium-focus focal length.

50-200mmWR is a medium telephoto zoom lens, and the focal length covers the medium focal length to telephoto.

18- 135 mwr is a zoom lens with a focal length of 7.5 times from standard to medium.