I want to bring the scene closer. What kind of camera+lens should I use? Ask the master about focal length and zoom.

The font on it is about 10. I use a rather shabby 15 inch monitor. Don't laugh at me, the conditions are limited.

But the lens I use is EF 100-400 4.5-5.6 USM is L, and anyone familiar with the lens will know that this lens is OK. 10000, the longest focal length is 400 mm, and I use a 30D and 640mm lens.

I can tell you that even my broken 15 inch monitor is uncomfortable at a distance of 30 meters, let alone the word 10?

It's not a big problem to see things beyond 30M, mainly depending on your shooting method and the air quality at that time.

I used it to shoot a street sign with the farthest distance of 250m, and the font was about 30cm high. Calculate this ratio to know how big the font is at the position of 30m.

The lens is not a telescope, and even a 1200mm lens is not competent.

By the way, the lens of 1200mm can't be moved by 65,438+10,000, and it costs 700,000-800,000.