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Archive 2014 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma

  
 
dartheyeball
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p.1 #1 · p.1 #1 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


I am at my wits end with this lens. Ever since I first bought it it has been the bane of my existence. When I first started using it with the D70s, I had nothing but mostly soft images. It drove me bonkers. After some trial and lots of error, I finally was able to coax some decent images from the camera/lens combo. Usually when I shoot soccer games, I use a monopod to support the lens. It seems that the newer the body I upgrade to, the worse the images seem to be. I am moving closer and closer to just selling this lens.

When I used the D200 with this lens, I noticed that the lens was always back focusing and not really tracking all that well. With my D7000, none of the images seem to be in focus. My settings on the camera are:

Rear button AF-ON
Lock ON: Of
11 Point AF
Dynamic 9 point AF

When I use my Nikon 50mm and my Nikon 80-200mm 2.8 push/pull lens, the camera produces sharp images. The D7000 also tends to go bonkers every once in a while when I attach the Tokina 300mm 2.8. It usually gives me an aperture of F7 and SS of 125th and the camera will not allow you to change those settings no matter what mode you try to switch to. The only way to fix the problem is to take the lens off the camera and reattach it. If you do it enough time, the camera will eventually work. Quite frustrating.







1







2







Quick test with the 50mm 1.8 yields no focusing issues with the camera...(so I thought)



Edited on Sep 25, 2014 at 04:02 AM · View previous versions



Sep 24, 2014 at 07:54 PM
MalbikEndar
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p.1 #2 · p.1 #2 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


> It usually gives me an aperture of F7 and SS of 125th and the camera will not allow you to change those settings no matter what mode you try to switch to.

That is a very strange problem and suggests that there is something wrong with the lens.

Does it produce a sharp image in liveview (with a solid tripod, and good light, and fast shutter) on the D7000? That is the test of the optics alone, as opposed to the AF system.



Sep 24, 2014 at 09:21 PM
dartheyeball
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p.1 #3 · p.1 #3 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


Here are some images with the 300mm shot with a tripod. The focus point was on the door knob. AF indicator was a solid green dot. Images is straight out of the camera. minus the second 100% crop





Test shot on tripod







100% View




Sep 24, 2014 at 10:01 PM
dartheyeball
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p.1 #4 · p.1 #4 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


D700 with nikon 80-200mm 2.8 lens.





Nikon d7000 w/ Nikon 80-200mm 2.8







Nikon 80-200mm 2.8 at 100%




Sep 24, 2014 at 10:12 PM
dartheyeball
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p.1 #5 · p.1 #5 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


It appears AF Fine tune is in my future. Hours and accursed focal charts later, it seems the issue may lay with the focusing of the camera. Hope these adjustments solve the AF issue.





Nikon 50mm 1.8 -19 AF Fine Tune







Tokina 300mm ATX 2.8 -14 AF Fine Tune







Tokina 300mm ATX 2.8 0 AF Fine Tune







Tokina 300mm ATX 2.8 -14 AF Fine Tune




Sep 24, 2014 at 10:15 PM
nikontypes
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p.1 #6 · p.1 #6 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


What af fine tune adjustments did you make?


Sep 25, 2014 at 04:52 PM
dartheyeball
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p.1 #7 · p.1 #7 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


nikontypes wrote:
What af fine tune adjustments did you make?


This was the first camera I've ever had to adjust any AF parameters. After some helpful advice from Trench Monkey, I was able to adjust the AF Fine tune and AF Default values for my Tokina 300mm 2.8 to get images in focus. It required -14 AF Fine tune plus -14 AF Default adjustments. Now the images look much better from today's game. I couldn't even explain exactly how it all works. Special thanks goes to Trench Monkey for all of his help!





Tokina 300mm 2.8 ATX lens -14 AF and -14 AF Default




Sep 25, 2014 at 10:33 PM
Kentchoi
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p.1 #8 · p.1 #8 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


Hi! dartheyeball.
I have Nikon D700 and D7100. When I used D7100 is no any problem. I do not need AF fine tune and no F7 and SS of 125th problem.
But I have same problem for my Tokina AT-X300 SD with D700.
I have already fix the problem.
1. Please turn on the camera to connect the lens.
2. Go to CUSTOM SETTING MENU
3. b Metering/exposure
4. c2 Auto meter-off delay: set to No limit.
You must not turn off the camera.
Now is everything OK.
Please try.
thank you
Kentchoi



Sep 26, 2014 at 10:05 AM
dartheyeball
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p.1 #9 · p.1 #9 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


I'll have to give that a try with my camera. Thanks for the tip!


Sep 26, 2014 at 12:59 PM
Kentchoi
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p.1 #10 · p.1 #10 · Tokina AF AT-X 300mm F/2.8 SD Lens Enigma


Sound great!
Please let me know is it work?
Thank you.



Sep 26, 2014 at 04:02 PM





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