I'm certain that one of the books I have downstairs would give me the formula to answer this, but can anyone answer how much depth of field a 300mm lens will allow at a distance of six feet? I know it is a very small number.
I'm certain that one of the books I have downstairs would give me the formula to answer this, but can anyone answer how much depth of field a 300mm lens will allow at a distance of six feet? I know it is a very small number.
DOF depends on your aperture Andrew - the higher the f-stop the greater the DOF (at perhaps the expense of increased distortion at the higher f-stops).
(Single) spot focus may help ensure focal point in these conditions, otherwise if you're up to it you can use a tripod and focus-stack a number of frames and merge in PS if greater DOF is your goal.
Remember the old days where camera has a DOF button and lenses had DOF setting engraved on the barrel?
Yeah, I knew that one factor in calculating DOF is aperture, but it was late when I posted and simply forgot to mention these were all shot at 300mm, 1/1000 second, and f/6.3.
Obviously, when walking Harry it is not realistic to use a tripod. I don't have any experience with focus stacking, but I've thought that when the weather gets a little better I would get back to the Tango, carry more equipment, and do some experimenting.
The answer is about half an inch.
Yes, a tripod, a different f/stop, and focus stacking all would have helped, but they were all impractical under the circumstances.
The original post was not about being ignorant, it was about being too lazy to do a Google search or walk downstairs and look up the formula.
Here is a link to another "too lazy" source.
https://dofmaster.com/doftable.html
Hey Alan, could you explain focus stacking in Photoshop when you have a chance? Thanks.
Would an app help with this question? I recently got this app on my phone, but I haven't had time to play around with it - Depth of Field Calculator Pro (Google Play) ... https://play.google.com/store/apps/details?id=com.aimenrg.dofpro&hl=en_U...
Not sure what the options are for iphones.
Focus stacking is basically a method of using multiple images to get the desired depth of field. On a tripod a series of images are captured with the focus on varying distances through the subject.
Images are then blended in PS, where the sharpest areas of each are aggregated to form the end result.
You should be able find YouTube videos etc that demonstrate the technique.