D.o.f

Robbie Comeau

Robbie Comeau

Como's back. back again
i have bene having trouble getting b ig object in focus, adn the background blurry. Lets say a person, i can not get my subjects face even, in focus, and everything blurred to the max. My iris is open, and its not helping any suggestions? thankas
 
well thanks, thats a good video, but it didnt really explain how to get a person in focus, cuz i did wut it sayd, i opene my iris all the way, and cudnt get that really nice blur around the persons body
 
TheComo said:
well thanks, thats a good video, but it didnt really explain how to get a person in focus, cuz i did wut it sayd, i opene my iris all the way, and cudnt get that really nice blur around the persons body
Click to expand...

As the video noted, there are 3 factors that effect DOF. Aperture size is only one of them. Are you using a 35mm adapter with you camera? What camera are you using? If you are using the stock DVX for example, with no 35mm adapter... then you will need to zoom in all the way and then back the camera back until you have the framing you need. This will give you a DOF that is similar to what you could get with a 35mm lens with a focal length of 45mm. The lens on the DVX has a focal length of 4.5 - 45mm (or something close to that). 4.5mm is a very short focal length. As the video noted, the shorter the focal length, the longer the apparent DOF will be. You might want to watch it again :)
 
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