Timeline for Is there a speed booster which will let me use an FX lens on a DX camera with wider focal length and aperture?
Current License: CC BY-SA 4.0
5 events
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| May 24, 2019 at 11:53 | comment | added | Michael C | Without magnification, the image circle projected by a particular lens can not be enlarged. To give a wider AoV with a larger image circle for the same focal length, each element of the entire lens must be made larger in diameter. More corrective elements will also be needed, as aberrations increase the further one moves from the center of the optical axis. There's no such thing as a "1X teleconverter", not even theoretically. A "1X TC" would output the exact same image circle as the bare lens would (except the back of the 1X TX would need to be its own thickness closer to the sensor/film). | |
| May 24, 2019 at 11:44 | comment | added | ejectamenta | The proposal is still that there should be a 'converter lens tube' between the camera and the other lens. But yes, the extra distance will magnify the image. I notice that 1.4X teleconverters exist, maybe a 1X teleconverter might be possible that enlarges the image circle and allows a tilt/shifting mechanism. That might be a useful possible design? | |
| May 24, 2019 at 11:22 | vote | accept | ejectamenta | ||
| May 24, 2019 at 11:22 | history | edited | Michael C | CC BY-SA 4.0 |
added 844 characters in body
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| May 23, 2019 at 16:08 | history | answered | Michael C | CC BY-SA 4.0 |