Fixing my Tokina 28-70/2.6-2.8 SV PROII
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My Tokina Lens seemed to become loose and whenever I zoomed, because it is an internal focusing lens, it would scratch inside the barrel of the housing. A screw must've gotten loose or something.
So therefore,
I started my mission.
This is a product shot of my Tokina
This lens is very solidly built and I have been using it for just more than a year, I've been quite satisfied with it as the quality and sharpness is exceptional especially after f4.5. This lens is designed for wide-aperture but at f4 and lower, this lens is quite disappointing. It's very soft even at the center. Rendering it nearly unusable.
Despite it's shortcomings, it has been a faithful lens, especially to my Sony a100. Definitely a very good (nearly excellent) replacement with my kit. It suffers on the wide end (on APS-C sensors) and doesn't offer much on the longer end. I recently discovered the the alignment seems to be different from Minolta's alignment standards, as the 28mm is not as wide as my Minolta 28-105/3.5-4.5's 28mm. So thus I shall say that it does have a slight advantage on the longer end.
The sharpness is weakest at around about 60mm, But it's not noticeable. There is hardly any barrel distortion on the APS-C sensor since this is a FF lens.
Recently, due to the problem, I was quite annoyed with the lens. I had bought a plastic petal screw on lens hood for it and I had to physically BREAK my Hoya UV filter as it got stuck to the hood. I found that the UV filter's thickness was nearly 3mm! I tried to smash it with a hammer and it didn't want to smash! So i just pryed the metal apart, and stuck the glass into the front of the hood's cavity (it had a small ridge just big enough for the glass!).
Here we go with the disassemble.
I took the photos AFTER I had disassembled it, so These pictures are actually Assembly photos.
The mount and rear optic
After I removed the mount and rear optic as well as the mount alignment collar
The Mount and rear optic inside rear lens cap
The mount alignment collar with all the screws so far
After the mount standoff is removed
Standoff 'Washers'
Removing the Screw AF gear
View of everything
I had found the screw and replaced it into the right place.
Now the lens works as if I had just got it!
:]
I hope you guys enjoyed this as much as I enjoyed disassembling and reassembling my lens!
Love,
A
