[TerryL]

Hello Folks,
I have been shooting with my 43 Limited lens. It really is hard to like because it seems to be soft. Today, I tried to do a calibration test using a long ruler. I focused (wide open) on the number 31. When looking at the image, I noticed that it appears to be front focusing. The focus is clear on the number 31, and about 1/2 an inch in front. It becomes out of focus only 1/16" behind 31. Do I need to do a lens calibration? I have never done this before, and I can't find it int the manual. I'm a little nervous about doing it, but I want to do it right, and perhaps start to love my 43 Limited. I like the fact that it is a true normal on my K-1.
Can someone please tell me where in the manual to get the directions? Is this process very difficult? I assume that I will make a small adjustment, and then retest the lens. As much help as possible will be very much appreciated.
Thank you very much.
Terry

[UncleVanya]

Fixing Front and Back Focus - The Remedy - In-Depth Articles

You can use a regular ruler at an angle as it sounds like you already did. Just read the article for the other details.

[TerryL]

Fixing Front and Back Focus - The Remedy - In-Depth Articles

You can use a regular ruler at an angle as it sounds like you already did. Just read the article for the other details.

Thank you, Sir. I watched a youtube video, and then was able to find it in the manual. It seems strait forward, so I should be able to do it, and keep testing the lens until I get it perfect.
Terry

---------- Post added 03-25-18 at 09:58 AM ----------

I do have one question. Will the camera remember what lens I make the adjustment, or is there a way to mane the lens in the camera?
Thank you,
Terry

[BWG]

When in the Fine Adjustment menu choose “Apply One” and the adjustment will only apply to that lens. Each lens should be calibrated separately. It can make a real difference on your keeper rates.

[davidreilly3207]

The problem with using a regular ruler alone is the focal point of the camera can be off from that shown in the viewfinder and the camera may not be focusing where you think. A better option is one of the dedicated focal aids such as the one available from Datacolor. I use their SpyderLenscal. It contains a vertical target to focus on with a 45 degree ruler beside it. Be sure the target is plumb(vertically level) and it is lined up at 90 degrees from camera.

[UncleVanya]

Any lens that communicates electronically to the camera conveying focal length etc will work with the apply one option. Essentially F/FA/DA/DFA Series lenses. Older series like A/M/K/m42 lenses only work with apply All settings.

[TerryL]

Thank you, guys. I finally got it calibrated. I stared out with -5 calibration, just to see how it acted. That was too much, obviously, so I backed off to -2. As far as I can see using the ruler method, it is right on the money. Now, I hope my 43 Limited comes to life.
Terry

---------- Post added 03-25-18 at 11:42 AM ----------

Thank you, David. I will get one of those, now that I found out how doing this to all of my lens is a good idea. It was supposedly easy to do.
Thank you,
Terry

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Last edited by TerryL; 03-25-2018 at 04:24 PM. Reason: Correct spelling

[bdery]

Now, I hope my 43 Limited comes to life.

It should. In the center, it's in the top-tier of the sharpest lenses that I've used. It's certainly among the most magical.

[bdery]

Now, I hope my 43 Limited comes to life.

It should. In the center, it's in the top-tier of the sharpest lenses that I've used. It's certainly among the most magical.