My focus lens has will not go back in - Panasonic Lumix DMC-TZ1 Digital Camera

Although you think the lens is in focus, when stopped down, I know it is not.
There are enough articles that tell about Depth Of Field, but I give a short explanation.
The DOF from a 50 mm lens on a APS-C camera, when set to f /1,4. when you focus on 1 meter, is just 2 cm when on f /4 you have a totoal of 6 cm and on f /11 it is 11cm. So wen your camera / lens combination has a back focus of about 5 cm, it will come within the 11 cm you get in f /11. Still the picture is not in focus, but you see what you want to see sharp.
I searched through the complete manual, scanned the review on Dpreview and searched the site from Richo, but noting to find about correcting back or front focus. on the K10D. Perhaps, because in the days this camera came on the market, they thought the photographer who uses f /1.4 lenses is used with manual focus.
I'm, not sure, but perhaps someone on the Richo / Pentax service centre can tell you, if they can correct the setting for your lens.

To my experience, the front or back focus is in the camera. (the six or 7 lenses I use on my camera, all have the same back focus, but my Nikon has a setting to correct that.

So if you want to use your lens without any change made to your camera, there is only one option, focus manually.

Sorry I could not find more.
Success

It sounds like the circuit board flex has gone bad, It folds back and forth when you zoom the lens, And needs to be replaced by a repair shop and readjusted. Tony

try cleaning the lens.

Also set the focus range in the camera to average both vertically and horizontally. That is when you press the shutter button thos red squares in the look through a;; ;light up rather than just the centre square.

I suspect it is getting feedback from something on the lens that it reads and tries to focus on that is closer than the object you want to photograph. Make sure there is no mold growth inside lens as that will do it too


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Clean the contacts on the camera body and the lens where they meet with a cotton swab dampened lightly with rubbing alcohol.

It sounds like you had the lens set for manual focus when you took the A / M switch plate off. If this was the case then when you but it back together the little arm behind the plate is on the wrong side of a moving gear assembly.

To fix, remove the auto/manual focus switch plate from the camera (just the one screw not the ribbon beneath) Push the switch over to A. Hook the bottom of the plate back to the lens and put the screw back in. Done!

Keep turning the focus dial until it will focus. The focus dial may need to be turned several times in one direction or the other. If the Lens has come off its focusing track inside the camera, you'll need to take it apart and place the lens back on the track. The track are grooves, like a screw, that holds the lens for focusing.

excuse me if this is a dumb question but you wouldn't believe the things people do...., but in manual mode are you actually manually trying to move the lens? as manual mode means just that you take hold of the lens and turn it. If it wont turn it sounds like the lens is jammed and needs returning/repairing.

if taking hold of the lens and turning it works for manual mode, take the lens off and clean the gold contacts on both the camera and the lens with a pencil erasor this may bring the auto focus back to life, switch back to auto and try again, if not its most likely the lens but take the body to a canon store and try another lens just to double check the body is ok

drop me a line if i can be of further assistance

best of luck

This happened to me once on a D70... When mounting the lens, make sure it clicks in all the way when turning counterclockwise. Also it may be worthy to note that both the lens AND the camera must be set to autofocus mode ("A" switch set on both lens and cam).

Marky

EXPLANATION.
1. The problem with 18-135 lens is because it make from plastic. Main problem from plastic is it can be reshaped after a few usage. When the shape ran out, the contact point will be defective. When the contact point didnt really touched, the processor cant send signal to lens to do autofocus (the lens focus using the lens motor, not the body). When u set to manual focus, the body doesnt need to instruct the lens to focus.
2. You are focusing something that is to near than the focal point.

SOLUTION.
1.Try cleaning the contact point on the lens. Then mount it back until the F showing up (F= aperture). This solution depend on your luck too. if the gap between to contact is so far, then it might happen back. Usually when u need it badly. haha
2. try to get more distance from your subject. Just keep press the shutter until the camera focus.

CONCLUSION
1.But new lens with metal mounting. It will last and durable.
2.Buy macro lens to close up. normal lens wont focus at short focal point!!~

First try another lens on the body and see if the problem is the lens or the body,if its the body the autofocus mirror could be out of adjustment, if its the lens, it sounds like the lens took an impact and needs a pro repair. you should be able to set body to manual focus and focus lens to infinty.