Timeline for Tokina AT-X-Pro 28-70mm F2.6-2.8 getting the lens to f2.6 on Nikon D700
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Nov 3, 2019 at 21:48 | comment | added | ejectamenta | I could see a difference between 70mm at f2.8 and 28mm at f2.8, so then the camera is maybe using f2.6 at 28mm but displaying it as f2.8. It was a good idea. | |
| Nov 3, 2019 at 8:10 | history | edited | Michael C | CC BY-SA 4.0 |
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| Nov 2, 2019 at 13:18 | comment | added | Michael C | If you have an available scene with uniform brightness (such as a rear illuminated scrim that is very evenly lit), you can compare the f/2.6 setting at 28mm to the f/2.6 (f/2.8) setting at 70mm. A difference of 1/4 stop is pretty minute - you'll likely only be able to confirm it repeatedly by comparing histograms. | |
| Nov 1, 2019 at 20:26 | comment | added | ejectamenta | It seems that not even the Nikon D850 is able to deal with f-stop increments of less than 1/3 of a stop. I guess Nikon don't make any lenses with 1/4 stops so they don't see the need to provide 1/4 stops. | |
| Nov 1, 2019 at 20:10 | comment | added | ejectamenta | There no way to set the ring to 2.8, the next stop up is f4. I set the camera up manually as described then set the lens to f2.6 on the ring and then took a picture and compared it with the command dial set to f2.8. Both images were identical in illumination. So it seems it is either not possible to get to f2.6 or the command dial's f2.8 is actually a f2.6 | |
| Nov 1, 2019 at 19:57 | vote | accept | ejectamenta | ||
| Nov 1, 2019 at 19:38 | history | edited | Michael C | CC BY-SA 4.0 |
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| Nov 1, 2019 at 19:31 | history | answered | Michael C | CC BY-SA 4.0 |