Jim Martin's latest activity
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Since the F stop number is the ratio of the lens focal length to the diameter of the front of the lens, two cameras with exactly the same size aperture/opening will have the same "f-stop rating". Differences in lens materials, the sensor, etc... -
Jim Martin reacted to AlbionDrones's post in the thread Air 3 Being featured on Drone Seekers International tonight - 8PM UK 5th Otober 2025 with
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Twelve months on from our last visit, we have been invited back to Drone Seekers International tonight, 8pm UK on the 5th of October 2025, where we will be showcasing some of our videos from the last 12 months, as well as discussing all things... -
The easiest way of putting it is that the image scale (=magnification ratio i.e the object size to the size of the image on the sensor/film) AND the aperture determine the depth of field. No more, no less. Wider angle = more depth of field (for a...
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That sounded like you were asking for halp. But no-one else does
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Jim Martin replied to the thread Cropping - Process or Just Wing It?.If I have an image that I like, but the crop doesn't seem obvious, I usually start as @brett8883 mentions and use established rules of composition, but I won't hesitate to deviate from those norms if my eyes tell me otherwise. I can see your...