I've Canon 600D and I use the back button to focus and the shutter to meter, I've been using spot metering for over 2 years for now and I understand what's the difference between it and evaluative, I ...
I have a prime Sigma f1.4 50mm lens on my Nikon D90 in P mode and focus mode on a set point of the field and notice that when I am using a tripod and change the f-stop that the camera changes the ...
I have a Sigma 610dg super flash that I wish to trigger with the TriggerTrap flash adapter (tt-fa1). Sadly I cannot make this work. I have tried two different TriggerTrap dongles but the flash never ...