[Brightcolours]

Unfortunately my EOS 6D has no intelligent macro tracking...


I am still trying to understand why DOF & light are about the same for 140mm f4 and 150mm f5.6

I tried to make 'about the same picture' (I mean the same cut/framing/crop or however I should put it into English...) with 100mm at f2.8 and with 100mm + TC at f4 (which means I had to get closer without TC), then the DOF in the pictures is about the same.


Hmm, difficult...still thinking about it.

140mm f5.6 DOF is quite like 150mm f5.6. But to get f5.6 with the TC combination, you set f4 on the camera. The TC takes one stop.

 

Macro distances anyway have very narrow DOF, and seeing a difference can be hard.