I think it's been discussed before about changing the default F4 camera but just to show what you can do.
For FC3 A/C I edited the server.lua file in Notepad++ (DCSWorldOpenBeta/config/view)
Other modules I believe you need to find the View.lua but not tested
What I used for F-15C
Chase = {
LocalPoint = {-6.750000,1.204000,1.700000},
AnglesDefault = {165.000000,-8.000000},
For A-10C (Only works on AI)
Chase = {
LocalPoint = {-5.000000,1.264000,1.14000},
AnglesDefault = {165.000000,-8.000000},
Limitations:
1.Server host controls this so won't work in MP unless host applies it
2.Each aircraft needs the server.lua/view.lua editing individually