I buy a Canon EF 50mm 1.8 II fron ebay and used in my new EOS rebel T1i. When select AF, it can autofocusing but report Err1.a fault in communication. I have clean the metal contacts of the lens,but it's useless.Can help me how to manage this faulty lens?
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Unfortunately the Canon T1i shoots video in full automatic mode. This means that if you want to change the depth of field...well, you can't. There are many angry T1i owners trying to get Canon to release a firmware update to have it perform like the T2i, but so far that has been fruitless.
So what can a budding videographer do get some artsy-looking footage with his or her T1i? The Band-Aid solution involves fooling the camera into thinking there is a manual lens attached so that the camera will relinquish control. To do this, the communication between the camera and lens has to be severed (don't worry - it doesn't involve modifying anything).
Step 1. Put the camera into Av or Manual mode.
Step 2. Select the desired aperture (if the aperture is "wide open" - e.g. F1.8 on the 50mm F1.8 II lens, then skip Step 3).
Step 3. Press the depth of field preview button on the side of the camera (above the T1i or 500D logo on the curved part of the camera body).
Step 4. With the DOF preview button still depressed, push the button as if to remove the lens, and turn it very slightly until "F00" shows up on the back display. You may now release the buttons.
Step 5. Switch the camera to video mode. There will be a warning message, but just do as it says and shoot anyway.
You're now ready shoot some nice shallow DOF shots. Use the manual focus ring on your lens to shift the shallow depth of field around in your shot. Please note that since the camera is no longer communicating with the lens, autofocus will not be available to you. Put the lens in manual mode on the barrel to be safe - many lenses do NOT have manual override and forcing the focus ring while in AF mode can damage the lens. Good luck and happy film-making!
Is this happening when you try to focus on something pretty close to the camera? If that's the problem, it's because the lens has a focus distance 0.25m/0.8ft meaning the subject has to be this far away for the lens to be able to focus. You could buy a new lens with smaller focus distance if this is a big problem to you.
When choosing a lens for your Digital Rebel XT, look for EF or EF-S on the lens. Film lenses with the EF designation will work on your digital camera, but AF or older lenses will not fit. Trying to force them on may damage your camera.
When using a film lens on a digital camera, there will be a 1.6x conversion factor. This means that a 50mm lens will be closer to a 70mm lens in reality.
I thought mine was broken but i cleaned off the copper tips on the bottom with a clean eraser very gently, and afterwards i put on the lens and it worked. I would give that a try if you have not already
I have the canon 70 -300 sitting right here beside me on my XTi, it also fits my XSi and all my EOS mount film bodies. one thing about canon EOS lenses and bodies: They fit and work together. Yes there are cheaper lenses, but I just answered another question on this website from somebody who has a 3rd party lens (and a high quality lens ta-boot) that will not work on his canon. This is typical of canon. They do not release all of their codes to 3rd party manufactures. Your friend just bought a premium camera, do not let him put a lesser lens on the camera, he will not be happy and the savings will not be that significant to make up the difference...
All canon EF and EF-S lenses work with 500D /T1i model.(yes all) If your lens is removed from old 500N body and if it has EF marked it will work for every Digital camera model of canon. Note: its focal length will be multiplied by 1.6 X factor. (mean 18 mm lens will become 29mm approx.) If you find this of help rate me.
The 35mm Rebel Ti and the Rebel 300D use the same lens mounting protocol. All Canon cameras designated 'EOS' use the autofocus EF lenses. If your Quantaray lens worked on the Rebel Ti, it will fit and should work on the Rebel 300D.
By the way are these RAW images? What type of lense are you actually using, check this
EOS-1Ds Mark III EOS-1D Mark III EOS-1D Mark II N EOS-1Ds Mark II EOS-1D Mark II EOS-1Ds EOS-1D EOS 5D EOS 40D EOS 30D EOS DIGITAL REBEL XSi/EOS 450D EOS DIGITAL REBEL XTi/EOS 400D DIGITAL Compatible Lenses EF 14mm f/2.8L USM EF 28-70mm f/2.8L USM EF 14mm f/2.8L II USM EF 28-135mm f/3.5-5.6 IS USM EF 20mm f/2.8 USM EF 28-200mm f/3.5-5.6 EF 24mm f/1.4L USM EF 28-200mm f/3.5-5.6 USM EF 28mm f/1.8 USM EF 28-300mm f/3.5-5.6L IS USM EF 35mm f/1.4L USM EF 70-200mm f/2.8L USM EF 50mm f/1.2L USM EF 70-200mm f/4L USM EF 50mm f/1.4 USM EF 70-200mm f/2.8L IS USM EF 85mm f/1.2L USM EF 70-200mm f/4L IS USM EF 85mm f/1.2L II USM EF 100-400mm f/4.5-5.6L IS USM EF 100mm f/2.8 Macro USM EF-S 60mm f/2.8 Macro USM EF 135mm f/2L USM EF-S 10-22mm f/3.5-4.5 USM EF 180mm f/3.5L Macro USM EF-S 17-55mm f/2.8 IS USM EF 200mm f/2.8L USM EF-S 17-85mm f/4-5.6 USM EF 200mm f/2.8L II USM EF-S 18-55mm f/3.5-5.6 EF 16-35mm f/2.8L USM EF-S 18-55mm f/3.5-5.6 II EF 16-35mm f/2.8L II USM EF-S 18-55mm f/3.5-5.6 USM EF 17-35mm f/2.8L USM EF-S 18-55mm f/3.5-5.6 II USM EF 17-40mm f/4L USM EF-S 18-55mm f/3.5-5.6 IS EF 24-70mm f/2.8L USM EF-S 55-250mm f/4-5.6 IS EF 24-105mm f/4L IS USM -