Why does nobody talk about the seeming fact on the internet, that T5/1200D cameras are ...

[szpevak]

Why does nobody talk about the seeming fact on the internet, that T5/1200D cameras are not compatible with any AF confirm M42 to Canon EOS adapters? What is the cause of that incompatibility? Does anyone know?

[TTMartin]

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@szpevak wrote:

Why does nobody talk about the seeming fact on the internet, that T5/1200D cameras are not compatible with any AF confirm M42 to Canon EOS adapters? What is the cause of that incompatibility? Does anyone know?

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Because Canon offers STM lenses with such high quality low cost there is no reason to adapt old lower quality lenses. 

[szpevak]

They are not lower quality.

[szpevak]

Also, as far as I think, they are better for video making, since they are made for manual focusing, and exactly that is what you need for video. Also, they are much cheaper, and still they are very well built, and their price is not negligible in a country where people do not earn as much money, as in the USA.

[Waddizzle]

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@szpevak wrote:
Also, as far as I think, they are better for video making, since they are made for manual focusing, and exactly that is what you need for video. Also, they are much cheaper, and still they are very well built, and their price is not negligible in a country where people do not earn as much money, as in the USA.

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How exactly should auto-focus confirmation work when shooting video with a manual focus lens?

[szpevak]

Do not you know?

[Waddizzle]

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@szpevak wrote:

Do not you know?

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Negative.  I do not know.

[kvbarkley]

The focus confirmation light always works since it does not depend on the lens.

However, szpevak, we don't talk about it because most of us don't shoot video much.

[Waddizzle]

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@kvbarkley wrote:

The focus confirmation light always works since it does not depend on the lens.

However, szpevak, we don't talk about it because most of us don't shoot video much.

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You do not get a focus confirmation with a fully manual lens.  Some lens adapters include the Dandelion(?) Chip, which does the focus confirmation.  But, those only work through the viewfinder.  During Live View or video mode, I dunno.

[Ray-uk]

For the people who are unfamiliar with focus confirm adaptors:

The adaptor is a normal mechanical adaptor that allows an old type manual lens ( the type that were used on old film cameras before AF) to be fitteed to a modern autofocus camera.

Some of these adaptors have built in AF confirm chip which connects with the camera lens mount electronics and fools it into thinking that there is an autofocus lens fitted that has been switched to manual focus.

This gives the added benefit that as you focus the lens manually (with the shutter button hafl pressed) the focus confirm indicator in the viewfinder will come on when the lens is in focus, the indicator is in the viewfinder only and does not show in live view. Sadly auto-confirm using the in camera indicator is not very accurate and can be unreliable with large aperture lenses.

All focusing and metering has to be done with the lens at full aperture so you you still have an entirely manual lens.

Some focus confirm adaptors are user-programmable so that you can (via multiple camera button presses) set maximum aperture of the lens ( to be recorded in EXIF) and carry out a crude type of in-lens microfocus adjust.

Whilst some of the older lenses are excellent ( some are even better than modern lenses) they can be slow and difficult to use on a modern camera even with the benefits that a chipped adaptor give you.

Ray