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I tried using a 800mm lens with a 2x teleconverter on my canon digital rebel every time i press the shutter button i get err code 01 what does this mean

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Hey there derf69, the error code "err 01" indicates the need to clean the lens contacts, which in your case you have several. I suggest you completely clean the contacts using a contact cleaning solution which dissappears completely. you can also use a clean eraser to effectively remove any resilient buildups. I suggest you completely disassemble your lens configuration, and rebuild, once all contacts on the lens and camera body have been cleaned. There is also a possibility that you may have an incompatibility problem. If the cleaning does not help, please let me know and provide the exact model name and number of your camera, lens, and converter. Good Luck

Posted on Mar 13, 2008

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I keep getting Err 01 and no photo is taken what do I do?


ERR 01 is a lens to body communication error. Clean the lens and body contacts (put a small amount of alcohol on a Q-tip - do not use rubbing alcohol!!!). Try again. If that doesn't work, problem may be in lens or body. Using the flat of your fingernail, push in the contacts on the body inside the mirror box to clean any tarnishing between the contacts the the circuit (they are spring loaded). Try another lens - if the other lens works, then your problem is in the first lens. If it still gives the ERR 01 code then the problem is in the body.

Has the camera been impacted or had water/liquid spillage?

Sep 16, 2013 | Canon Rebel XT / EOS 350D Digital Camera

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My Canon EOS Rebel XS only takes pictures indoors (ERR. 01)


You didn't say which shooting mode you're using, but I'd bet you're in Manual mode and have dialed in a completely wrong aperture/shutter speed combination for bright lighting conditions. For example, 1/60th of a second and f2.8 in bright sunlight would be "burning out" your image, so the camera may be giving you an error message. Try using AUTO or PROG setting and see if the problem persists. If it does, try a different lens. You may have an incompatible mount, or one of the contacts may be damaged. If all else fails, try your lens on another Canon camera.

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1 Answer

How to repair err 01 on canon 1000d "Communication


So, have you cleaned the contacts? Remove the lens and using a cotton swab lightly dampened with rubbing alcohol, clean the contacts on the lens and the camera body where they meet.

Oct 15, 2011 | Canon EOS Digital Rebel XS / 1000D IS...

1 Answer

Hi sometimes it takes a picture with no problem but sometimes I get err 99 or err 01. Any ideas?


Hi! Welcome to Fixya
Err 99 could mean several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:
Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.

Thank you for choosing Fixya!

Feb 08, 2011 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

C-af 1 2x teleplus mc7 will not auto focus with my 90-300mm canon ef lens on my canon d7 dslr. can you help please.


Teleconverter loses maximum lens speed.
With 2X teleconverter, your 90mm-300mm f4.5~5.6 will become something like f8~f11. Most SLR AF cameras need maximum aperture of f5.6 to autofocus so by using the 2X teleconverter on this zoom lens, it will not autofocus, because the lens's light gathering became too low.
Here is more information about using teleconverters.
http://tinyurl.com/29s5osk

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1 Answer

I am trying to use an older SIGMA 28 - 200 mm f3.5 - 5.6 DL Hyperzoom macro Aspherical AF lens with a Canon Rebel Xsi and am getting a communication error (Err 01).I have already cleaned the lens contacts...


To NOT get that error you need to use in AV mode. It's the only way that old Sigmas work with the new Canons. It's an aperture bug that old Sigma lens have and some the only way to fix it is to rechip it. The problem is that Sigma no longer rechips the lens.

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1 Answer

ERR 01


Try remove the lens, it may be faulty.

Apr 01, 2009 | Canon Rebel XT / EOS 350D Digital Camera

1 Answer

Tamron teleconverter 2x AFs compatibility.


When using a TC, as the perceived focal length increases and the aperture falls off, AF struggles to work except in very bright light.

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1 Answer

Purchase Zoom Lenses


Canon currently makes super Telephoto lenses from 300mm to 800mm and a number of zoom Telephoto lenses from 28-300 to 100-400. You can also special order a 1200mm lens from Canon at a cost of $99k! (There are only about 20 such lenses made so far.)

You can also get a 1.4 or 2x teleconverter to further increase the power of a telephoto lens. However, the cameras are unable to auto-focus when the minimum f-stop exceeds f/8, which can happen when you use one (or both) of the teleconverters on these longer lenses, so you have to manually focus the lens.

You can also get telephoto lenses from other manufacturers such as Tamron and Sigma that are built to work with Canon cameras. However, the Canon lenses are generally regarded as the best quality.

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1 Answer

Canon Rebel EOS camera


Err 99 is a general error msg. That is, it has to be connected to the service soft that only Canon self or an ASF has, to know more precisely the problem.
To narrow the possibilities;
-choose Av, shutter priority,
-choose the smallest aperture your lens allows, 22 or 29 or so,
-while pressing and releasing the depth-of-field preview button, (front, under the lens release) look into the lens from the front.
If the diaphragm doesn't move it has to be changed. If you have the 17-55 standard lens; throw it away and buy a better one instead of paying a repair. You'd be better off.

If you have the Err msg with several different lenses the problem is in the body itself, often the shutter. Check also your PINs in the CF-slot. If one PIN is toching another; break off the bent one and normally you can go on, the PINs are almost all doubled.

Jul 27, 2008 | Canon Digital Rebel / EOS-300D Digital...

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