Question about Canon EF-S 17-55 f/2.8 IS USM Lens

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I have my Canon 30D set to manual but cannot change the f stop to anything below f/4.0. This lens should go to f/2.8.

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Your camera body probably needs a firmware update to enable it to recognise the lens properly. The latest 1.0.6 firmware adds EXIF data for a number of lenses including yours to the camera. At the very least, you'll need to ensure that you have the latest firmware in order to eliminate it as a potential cause of your fault.

Posted on Sep 10, 2010

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After 6 years my Canbonb 30D is presenting some shots as blank images.


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Firstly, be sure to check flash voltage. Your 30D may accept max 6V so that your camera can be shot if the flash unit has higher voltage than 6V.
1. Use low ISO to keep low noise....around f/8 or more depends on your need and how much DOF you want.....Set the shutter speed around 1/125 to your max speed to stop any movement (your subject or camera itself shaking).
2. Above is set in Manual mode (iso100, f/8 1/125 or 1/250), then you just need to leave the flash to work in TTL mode.
3. It needs battery, the connection is for syncing to trigger and release a proper flash power (in TTL mode).
Hope this help!

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1 Answer

Hi all, I wonder if you can supply some advice regarding a Sigma17-35mm lens I purchased earlier in the year. Basically if I use the automatic or 'P' setting on my Canon EOS 30D camera the image is over...


Try your EOS in AV (aprature value) mode. You should be able to adjust your aperature value in 1/3 or 1/2 steps dependind how you have your Custom Functions set in your camera's menu. Possibly the lens you purchased is for an EOS 35mm. If you use a 35mm lens on your eos there are some calculations you must use. When using a 35mm lens on the EOS 20D, 30D, 40D and 50D bodies, you must first calculate your focal leingth by 1.6 times. With this, your exposure changes as well.

The only EOS Digital SLR bodies that use a 35mm x 24mm CMOS sensor are the 1D and 5D. My wife uses a Tamron 18-200mm f3.5-5.6 lens on her 20D and loves it.

If this makes no difference, you may have a defective lens.

Nov 29, 2008 | Sigma Cameras

1 Answer

Canon 30 D


Sounds like it needs service. You can try resetting the camera to its factory default settings and see if that does anything. On the Setup Menu (wrench and hammer symbol), go to Clear settings, then Clear all camera settings, and select OK. This is covered on page 37 of the manual.

May 06, 2008 | Canon EOS 30D Digital Camera with 18-55mm...

2 Answers

Error 99 on 30D Canon


Had this problem before and i found this guide online

1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If it does, then the camera should be
serviced. If it does not, then please proceed to the next set of steps:
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If so, then the CF card is the most
likely source of the issue. Try using a different card.
If the message does not appear, please complete the following steps:
1. Turn off the camera.
2. Clean the lens contacts by gently rubbing them with a pencil eraser
or soft cloth. Be careful that you do not let any debris fall into the
camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is
attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the
camera should be serviced.

Feb 22, 2008 | Canon EOS 30D Digital Camera with 18-55mm...

1 Answer

Canon 30D


Is the lens a Canon EF or EF-S lens? Have you used it before on this particular camera body? Did you do anything else (change memory cards, etc.) at the same time you changed the lens?

Try taking off the lens and cleaning the electrical (metal) contacts on both the lens and the body with a small dust-free cloth or pencil eraser. If that doesn't help, switch in the lens you were using before. If it works with the original lens, there may be an electrical problem with the other one. If it no longer works with the original lens, you may need to have it serviced.

Feb 08, 2008 | Canon EOS 30D Digital Camera with 18-55mm...

1 Answer

Date/Time


European and US days/months settings are the opposite way round. You are changing the month setting, hence only 12. you can change the option from dd/mm/yy to mm/dd/yy by selecting the dd or mm and changing it as described on page 39 of the manual available on this link; http://www.usa.canon.com/consumer/controller?act=SupportDetailAct&fcategoryid=215&modelid=12929 Hope this helps, please post again if you still have trouble :)

Apr 04, 2007 | Canon EOS 30D Digital Camera with 18-55mm...

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