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Mike Stobbs | profile | all galleries >> Galleries >> Lens Align Test Images tree view | thumbnails | slideshow

Lens Align Test Images


This shows just how well the Lens Align tool really works.
It will take a bit of practice getting things right but in the end well worth the effort.

I had suspected my 70-200mm was not really as sharp on the spot I focused on no matter what body I put it on.
This lens gets lots of use indoors for action wide open at f2.8 and up close sometimes, which resulted in images being a little soft.
I was having coffee with Bas and Steve a few weeks back and they told me about this cool little tool you could get to correct this problem.
All high end DSLR's now have a place in the set up menu to Adjust Focus "Fine Tune"
All the images in this gallery are crops from the originals and resized for the web so you my not see the difference as I do in some lens's.
Both my D700's showed varying amounts of rear AF Focus problems.
It is interesting to note that with different lens's you have to read different number scales to see if it's in focus.
My 14-24mm looked soft on the large numbers all the time but if you look at the very small numbers you can see the difference.
This means that even thought the AF sensor was focused on the target the real true focus was behind.
A quick AF Fine Tune brings the focus ahead were it should be.
Saving the lens number and adjustment to each body you can put any lens on any body as it remembers them.
My landed cost for this in Canada was $92.50

So before you send your camera body and lens back for a focus problem invest in this tool.
I understand that your camera can ship from the factory with a -3 to +3 AF focus variation which is in factory spec.
Some of my glass needed -6 adjustment others +20.


Lens Align
Lens Align
70-200mm Front Focus 4MS
70-200mm Front Focus 4MS
70-200mm Adjusted 4MS
70-200mm Adjusted 4MS
85mm Rear Focus 4MS
85mm Rear Focus 4MS
85mm Adjusted 4MS
85mm Adjusted 4MS
85mm Back Focus 5MS
85mm Back Focus 5MS
85mm Adjusted 5MS
85mm Adjusted 5MS
105mm Rear Focus 4MS
105mm Rear Focus 4MS
105mm Adjusted 4MS
105mm Adjusted 4MS
105mm Rear Focus 5MS
105mm Rear Focus 5MS
105mm Adjusted 5MS
105mm Adjusted 5MS
14-24mm Rear Focus 5MS
14-24mm Rear Focus 5MS
14-24mm Adjust 5MS
14-24mm Adjust 5MS
200mm Back Focus 5MS
200mm Back Focus 5MS
200mm Adjusted
200mm Adjusted