Question about Canon Normal EF 50mm f/1.4 USM Autofocus Lens

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My 50 mm 1.4 lens won't focus anymore. - Canon Normal EF 50mm f/1.4 USM Autofocus Lens

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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markevans
  • 148 Answers

SOURCE: Tamron lens for Xti?

if it is an auto focus lens that works on one eos camera, it should work on almost all of them. the only known exception is that some high end extenders will not fit the eos1dmarkII as it protrudes into the opening too far.
but a good rule is that if it fits without any obstruction issues, it should work. try cleaning contacts on the lens and camera body. if that doesn't fix it, talk to Tamron. you can use it manually, but will not be as easy and you would get less predictable results.

my suggestion is to always go with lens from camera maker.

sounds like there is an issue with the tamron lens. not the camera.
good luck
mark

Posted on Dec 24, 2007

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  • 1 Answer

SOURCE: sigma 70-300 mm lens wont focus

I was focusing to close to the subject & too much glare from a church window.

Posted on Sep 28, 2008

robshow
  • 367 Answers

SOURCE: the focus lens was hit by a basketball and it won't take pics.

Have you tried a different lens on the camera almost any lens with the same mm size will work. If it still does not take pictures with another lens. You should take it in for service.

Posted on Jan 05, 2009

  • 2 Answers

SOURCE: Will not auto focus with a smaller lens.

this happened to my camera. wont autofocus but works with manual.

I cleaned the contact point of my lens and the camera.

simple as that it worked...

I actually cleaned it with "monitor wipes"

Posted on May 20, 2009

aouate3
  • 123 Answers

SOURCE: nikon 18-200 mm vr lens not auto focusing on my nikon d200

lets start with the basics, try hard reseting it and try again, if that doesnt work then
try upgrading your firmware (if possible on your camera) and if that doesnt work then it may be the lens, but dont forget to spend a few hours trying to find a option for it in the meny

Posted on Jun 13, 2009

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1 Answer

I can not get the telescope to focus. The viewfinder will not focus in. and can't see anything out of the out of the optical tube.


This type of telescope is viewed from the small tube at the rear. Use the longest lens you have. Most people think that they need magnification, but that is not accurate. A 5 mm lens will only have 1/6th the field of view (how much sky you see) compared to a 30 mm. The picture below was taken through a 50 mm lens.

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My asahi pentax camera has a serial #6320891. Could you tell me the year? Plus have a 50 mm lens, a 49 mm close -up lens #1,2 and 4, a 67mm lens with a 67mm hase -1 lens and a vivitar auto 215 flash. Any...


these days second hand photo camera's with film, are not worth much. Some younger persons (really only a few) would like to try these camera's for a while, but they don't pay much. Not knowing what lenses you have it is impossible to guess what their value can be. A 50 mm f 1,2 would bring more than a f 2 or even a 2,8.
Then before you could put it on ebay, you should at least shoot one film, to see if the camera still works.
Lately I bought a Nikon F90 and a F50 with a zoom lens and one was 30 dollar the one with the zoom was 20 dollar. both are in excellent condition, making fine photos with different lenses.
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The problem usually comes about when the focussing ring comes loose. Step 1 remove the 1.front round name ring 2. filter ring. this will expose three screws that hole the focus ring in place. reset the focussing to infinity on your viewfinder then set the ring to the infinity mark and retighten. If the helicoid has come apart then take the mount ring out, aperture ring out, and remove the two focus guides. turn the core out, set the fine thread back until it is almost against the ring directly behind it. make sure that it has at least one and one half turns. then engage the helicoid back. refit the focussing core into the lens and refit the two guides.reassemble the lens and revert to step one to reset the lens.

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I am new user for DSLR, using old 50 mm 1.8 manual focus on D80, unable to see any inmage on playback (shows information). Will this lens work with D80, using settings as manual mode, f22 . Please guide...


Turn the aperture ring to its smallest setting (largest f/number). You control the aperture from the camera body, as on a lens without an aperture ring. Turn the mode dial to M (manual). The camera's exposure meter will not work with this lens. You can use another lens to get an approximate exposure, or take pictures and review them and/or use the histogram to fine-tune the exposure. The camera won't autofocus, of course, but the in-focus indicator in the viewfinder will still light up to indicate proper focus.

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1 Answer

I am able to see with the 20m Lens but once i insert the 5mm Lens it looses focus and i cannot see anything, i tried adjusting the focus again with no success. The worst thing that even at day light i...


That's because the 5 mm is too much magnification for your small telescope. Maximum magnification is a function of APERTURE. Which is how big is the front lens or the mirror.

Your scope has about a 2 inch aperture, so the maximum posiible magnification is about 100 power (if it is like the one in the picture above)

50 times aperture (2 inches)-- 100 power

It will only achieve 50 times if the optics are perfect and the sky is very transparent and stable. Usually only 30-40 times is all you normally get.

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1 Answer

I have a D90 and I just got, used, a 50 mm f/1.4 D lens. The lens motor sounds like it is working, but only moves the lens a small amount. Not enough to properly auto focus. It will manually focus,...


Unless you have a lens collimator and other equipment, do not try to take the lens apart yourself. Take the lens in to a reputable camera shop and have their repair department do a CLA (clean-lube-adjust) on the lens.

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1 Answer

Blurred subject in middle of photo


I own Rebel XT and Canon 50mm f1.8 MKII lens with plastic mount and noticed many pictures with missed focus, either front or back focusing. Meaning objects slight forward or below the intended subject is in focus. I've sent my body and the lens to Canon for evaluation and thet adjusted my focus sensors on the body. I still have problems and there are many threads related to focusing on this camera with 50mm f1.8 that the sensors on this camera do not do so well with fast lens and prone to missed focus.
Test your camera's focusing ability with a book or magazine where you focus on just one specific line and see if it is truly in focus when you review the picture.

Feb 15, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

The focus lens was hit by a basketball and it won't take pics.


Have you tried a different lens on the camera almost any lens with the same mm size will work. If it still does not take pictures with another lens. You should take it in for service.

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1 Answer

Focusing ring looseness on 50/1.2 M-Hexanon


did you see any rubber gasket on the ring.. this could be the one turn out to be loosen,

did you dropped or any kind of incident happened on the lens.

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1 Answer

How to set up 50 mm lenst for wedding photos .. and flash


Sorry this is too late, perhaps it will be useful to others. I hope you used a different lens for the wedding!

You can't use the 50mm 1.8 lens on the D40x unless you focus manually. This is because the D40x only supports autofocus with AF-S and AF-I lenses. The focus motor and drive mechanism for other AF lenses was omitted to make the camera smaller, lighter and cheaper.

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