Canon eos 5 35mm manual
A viewfinder magnifier is often helpful. Alternatively, most current DSLRs have a live view capability, which displays the actual image from the sensor on the rear LCD in real time, often with the option of magnifying the image. This is the best and most accurate method of judging focus.
The only downside is that it's time consuming and you can't do it with the camera up to your eye. AF confirmation chip A third alternative is to use a lens adaptor with what is called an "AF confirmation chip" attached.
This is a small electronic chip in a molded housing with contacts that connect with the electronic lens contact pins in the Canon EOS camera body.
Under these conditions the camera body activates the "green dot" autofocus confirmation light in the camera viewfinder, so that you get the in-focus indication and "beep" when you have the lens focused on the subject. AF confirmation chip attached to adapter While many people have had good luck with the AF confirmation chips and chip enabled adapters, there have been a few reports that they have damaged cameras.
I have used three of them from different sources all via eBay and I have had no issues with any of them. If you are going to attach a chip to an existing adapter it's very important to glue it in exactly the right spot so that the contacts on the chip align properly with the pins of the camera.
There are several types of AF confirmation chips. The simplest just tell the camera it's OK to activate the AF confirmation light and send a fixed focal length and aperture usually 50mm f2 to the camera.
Others can be programmed with a focal length and aperture using the camera to do the programming. Some can be focus calibrated. Make sure you know what you are getting if you buy one. The most popular source is, of course, eBay Exposure and Metering When using a manual focus lens on an EOS body there are two exposure modes which will work correctly, Manual and Aperture Priority. In manual mode you set both the shutter speed via the EOS body and the Aperture via the aperture ring on the lens yourself.
In Aperture Priority mode you set the aperture on the lens and allow the EOS body to determine the shutter speed. Since a mechanically adapted manual focus lens has no intrinsic electrical coupling to the body, the body doesn't know it's there and so with most current EOS bodies the LCD display will readout an aperture of "00". This is normal. However you want it set to "1. Do NOT dial in the aperture you are using on the lens.
Leave it at "1. As mentioned earlier, some adapters have a built in focus conformation chip. In that case the chip is usually programmed to tell the EOS camera body and aperture. It might be f1. The camera will then display that aperture, but you can safely ignore it. The camera will measure the amount of light actually coming through the lens and in aperture priority will calculate the appropriate shutter speed. It will not use the displayed aperture for any exposure calculation though it will record it in the image EXIF data.
Though autoexposure will work just fine, some EOS bodies may require some degree of exposure compensation - or not. There's really no way to tell without doing some tests. You can either shoot, look at the results, then decide if compensation is needed. This is easy with digital, but tedious to do with film. The other way is to compare meter readings for the same scene between the manual focus lens and a regular EOS lens.
At the same aperture both should give the same shutter speed. If they don't, add exposure compensation in the case of the manual focus lens until they do. I've found most lenses are pretty good, but a few do need exposure compensation set.
The reason for this is complex and has to do with the relative positions of the exit pupil of the lens and the optics of the autoexposure sensors. Clearly using a manual focus lens is inconvenient, but sometimes it can be worth it if the equivalent EOS lens is expensive, if the manual focus lens is better than any Canon EF or EF-S series lens rare, but it happens , if you shoot mostly static subjects or if you don't use the lens very often.
When you mount a Canon multiplier teleconverter on an EOS body there is communication between them. The multiplier basically tells the body "Hey, I'm a multiplier and whatever you see through me should look like a valid, operational, autofocus Canon lens". If you don't mount a lens on the multiplier that says "hey, I'm a canon EOS compatible lens", the camera body gets upset and refuses to work! In fact if you just mount the multiplier and try to take a shot, you'll find the camera will refuse or report an error condition.
It wants to see an EOS lens on there. If you have a manual focus lens on an adapter with a focus confirmation chip built in, things should be OK. The lens then tells the multiplier and camera that it's OK and it's a compatible lens, which makes the camera happy again and it will work.
If you use a multiplier safe for the lens in the original lens mount, e. The camera body doesn't mind in this case because there's no intermediate Canon multiplier telling the camera body to expect a Canon lens. If all else fails and you have a lens mounted on a canon multiplier and the camera won't fire, you can slightly dismount the multiplier by rotating it a small amount as though you were removing it from the camera.
This disrupts the communication between the multiplier and the camera and the camera is happy again. Just don't rotate the multiplier too far or it will fall off the camera! The lens detection Microswitch On some EOS bodies there is a small microswitch in the lensmount which must not be tripped by any attached lens or lens adapter in order for the camera body to work.
If an adapted manual focus lens trips this microswitch, the camera body them looks for a valid EF series lens to be attached. If it doesn't see the correct electrical connection the the camera body thinks there is an error condition and will not operate.
I've never been able to find an official list of which bodies have this switch and which don't. This page requires Javascript. Modify your browser's settings to allow Javascript to execute. See your browser's documentation for specific instructions. Locating and Installing Your Download When your download is complete please use the instructions below to begin the installation of your download or locate your downloaded files on your computer.
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