How do I DEEPEN my DOF with an adapter on?

Zblock

Zblock

Well-known member
So theres a lot of complaint that the majority of DOF adapter users shoot footage that all looks the same and I've heard time and time again that DOF is only a tool and should only be used when you the filmmaker feel it's necessary.

I guess after using my adapter for a few months I'd agree and my biggest complaint is that the field is sometimes so shallow it takes away from my scenes.

I wish the unit was easier to take on and off so I could use it for the shots I want and then go back to deeper DOF with ease but thats not the case so I'm forced to ask How can I get a deeper DOF with the unit in place on the camera??

Is there settings on the camera (I really don't want to hear close the Iris because it's such a struggle to get enough light in the first place) or can I position the cam nearer/farther away?

It's nighttime so I can't experiment right now or I'd let you know my findings. Let me know your thoughts or experiences with this. I'm thinking about having a two camera system in place to film my next project if I can't find a solution to this.
 
There are three factors that influence DOF:
-Camera to subject distance
-Focal Length
-Aperture

The first one can't be easily adjusted because it changes your composition. The choices left are: you can shoot with a more wide angle lens, or you have to stop down the aperture (add light or shoot with a higher iso or slower shutter speed). Not much else you can do if you don't want to take the adapter off...
 
With a given sensor, or imaging area size, DOF is a function of lens focal length and aperture size. If you want to increase the DOF and you can not decrease the aperture size, then you would need to use a shorter focal length lens. That is physics (optics). There are no "Tricks" around that.
 
close the iris, add light. However, one weakness of some adapters is that the GG grain will start to appear at and beyond 5.6. Some adapters though have higher tolerances depending on the lens. Wider shots using wide lenses starting at 20mm will let you get away with it unless theres a subject really close to the lens and the background is far.
 
Indeed use a wider lens. 20mm is great for large DoF.
Use a cam with highly sensitive sensor like the new Sony 350 f.i. with a adapter that allows you to stop down like the SG-Blade f.i.
Wait for the new Nikon full sensor full HD DSLR(just a joke)
 
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