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Re: Reading the light meter on my camera
You didn't mention whether your Rebel was a film version or digital, but as best I can see from the manuals they are quite similar with regards to your question.
The camera does have a light metering function, but you won't see a needle like some of the older film cameras had. Instead, you will see in the viewfinder the shutter speed and the aperture settings. For example, 500 4.5 would indicate that the camera has determined that the shutter speed will be 1/500th of a second and the aperture f/4.5 to properly expose the shot. Depending on what mode you are in, you can control one or both of these numbers. If either number (or both) are flashing, it indicates that the shot will be overexposed or underexposed, and you must take some type of corrective action that the camera cannot do itself with the current mode settings.
Canon has manuals available online for all the digital Rebels and many of the film Rebels. See this link. Select EOS (SLR) Camera Systems in the top box, and choose the appropriate categories in the next two boxes, then click Go.
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And the battery is still ok? See the LCD display.
When the battery is almost empty, it won't be able to charge the capacitor in the flash, and the flash can't fire. The camera protects the shot, because if the flash was needed, the shot would be much to dark.
The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.
Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or, despite what I said first, you can use any photo cataloging program such as Picasa.
I owned this lens and didn't have that problem, but I always ALWAYS used the lens hood, and 99% of the time had a slim 77mm circular polarizer on there as well since my use for it was mainly landscapes and mainly during daylight hours. Does your camera have lens profiles for automatically correcting known lens issues? As a Band-Aid solution you could dial your exposure compensation down to -1.00 or so when shooting 10-14mm. It's a pain, but better than blown highlights...
You might also try different metering modes. I tend to use partial metering and choose a spot with "average" light in my shot, then lock the exposure, autofocus, then shoot. Sometimes evaluative metering might read too many darks in such a wide framing and overcompensate - just a theory.
There is no communications between the camera and lens. When using a set up like this everything becomes manual and you must remember to stop down the aperture to your taking aperture before releasing the shutter. I don't know what camera or format you are going to use this lens with but assuming it is a digital "bridge" (a camera that is between an amateur and a pro) or a professional the sequence would be the same. To view, focus and compose the lens would be set in this case F2, to select the correct light meter reading the lens is set (stopped) down to the taking aperture. The modes I've used for this have been mostly manual but lately I found that "AV" worked equally well and the camera metered to the proper exposure. Most times the camera was mounted on a tripod and the shutter was released with a electronic shutter release. Sequence for taking a photo for me anyway was/is (with the camera mounted on a tripod) focus, compose, stop down to taking aperture, check metering and release the shutter if in AV mode or manual mode to set the shutter speed and release the shutter. You will find that all makes of digital cameras will function differently so what sequence works for one won't work on others. This meaning I have had digital cameras that wouldn't meter through anything other then the lenses meant specifically for them. Problems that I've had. Forgetting to stop down to taking aperture (like Duh), not fine focusing (manual), not trusting the in focus indicator, forgetting that the viewfinder is/was only 94% of the scene. Once a little time has been spent with a lens set up like this the rewards are far beyond the trivial annoyances. Have fun with it
The Lensbaby does not incorporate any electronic circuitry. Without any, the lens cannot communicate with the camera. That is what the F-- message indicates. Without the communications, the camera cannot meter the exposure since it doesn't know what aperture the lens is set to.
Your lens is on properly. You just can't meter through it. You can use a separate light meter, meter through a different lens, or simply shoot and adjust the exposure by looking at the result and the histogram.
You need to turn the mode dial to Manual (M). You won't be able to use the camera's built-in exposure meter at all with this lens. You can take an exposure reading with another lens to use as a starting point, then review the pictures and histograms to fine-tune the exposure.
error 99 can most times be remedied by taking a standard pencil eraser and carefully cleaning the gold contacts at the back of the lens and the gold maching contacts in the lens opening of the camera... BE CAREFUL not to let eraser crumbs into your camera... keep it clean... reset the battery and give it a whirl.... did it solve the 99 issue? for the CF it refers to the cf card... here's what I've found on this: Canon reports that this error code may appear on your digital
camera’s LCD (liquid-crystal display) when there is an error reading
from or writing to the inserted CF (CompactFlash) card. This error code
occurs most often after a user has tried to eject a CF card before the
camera has finished writing data to the card.Solution: Canon
suggests that you first try to use a different CF card. If you do not
see the error message when you use the new CF card, the first card is
Before you take the next step, drag the files
from the CF card to a location on your hard drive to back up the files.
Next, you can use Windows’ ScanDisk utility to check the CF card for
errors. If you use a Mac, you can use Disk Utility (in
Applications\Utilities\) in OS X.
If ScanDisk or Disk Utility
fails to resolve the CF card problem, insert the CF card in your camera
again. Then format the CF card. On most Canon cameras, you can do this
by pressing the Menu button, selecting the Format tab, highlighting
Format, selecting Format, and choosing Yes. Make sure you have backed
up the data on the card before you do this. Formatting the card will
delete the images from the card. After you format the card in your
camera, use ScanDisk or Disk Utility to check the CF card again. If you
still encounter errors while using ScanDisk or Disk Utility, you should
discard the CF card because it is damaged.
If the error still
occurs after following the steps above, your camera may need repair.
Contact Canon’s technical support for further assistance.