JohnKenShow
The YTTalk Godfather
This is hardly ever true, AND completely off topic as the OP said they need a DSLR mic that is mobile outside. Please stop parroting the "Blue is best" mantra without proper microphone experience, and please actually read the thread for what the person is looking for.
JustSomeGermanDude has it entirely correct. It is plausible that a longer barrel, more expensive shotgun mic will minimize the issue but the Rode mics are really the best value/money proposition at the low end in unidirectional mics. It could be minimized further by putting the microphone between the target and the traffic noise source, facing away from the traffic, but if the roadway is loud enough, the echo is going to be everywhere.
To add to that, this kind of thing is one of the reasons outdoor recording is done with a boom pole. Put the mic up in the air, facing downwards at the target and out of range of the camera. Not a lot of area echo when your mic is pointing at the grass.
Where did he say anything about saying anything about a DSLR mic in the OP?
As you can read below he said nothing about that in the first post... Just wondering...
Hey guys! How's it going?
I am looking for a microphone, a pretty decent one which will only record a certain distance. I have a fair few, but all of them records background noise (Like traffic!)
Any advice will be appreciated!