EF-S to EF Converter?

[iHEARTfood]

Does such a thing exist?
If not, will it exist at some point in time? I have an XT and im thinking about upgrading to a 5D, or even buying a 35mm SLR, and I dont want to spend a bunch of money on EF-S or Sigma (APS-C sensor only) lenses if I cant use them when my photographical career expands.
Thanks

[Wilt]

No such thing. Part of the issue with EFS glass on FF camear is that the optics are not designed to cover as much area for the 1.6 crop sensor, so it will not properly cover the entire frame of a FF camera. Part of the issue with EFT glass on FF camera is that the mirror in suitable 1.6 crop cameras has been downsized and can clear the rear lens surface by a larger amount, so designers can make EFS glass rear element closer to the focal plane, so a FF camera's reflex mirror might hit the read element of EFS glass. While you might be able to play games with the distance between rear element and focal plane via addition of an optical element to increase the focal length of the lens, you are now adding optical elements and degrading the optical quality by doing so!

Hey there are tens of thousands (more?) EFS bodies in use in the world today. do you really think everyone is going to throw away/trade in those cameras? Likely not...and if not, then you can sell the EFS glass to THEM! Olympus abandoned the OM system years ago, and people are still buying used OM stuff today and some is very much in demand. I have OM glass that I can sell USED for over 2x what I paid originally for that lens when new! If my thought process was 'if I cannot use it into the future, I won't buy it' like yours is right now, I would not have the continued use of some wonderful gear and I would not be able to benefit from the appreciation in value of the stuff I had purchased!

[nitsch]

The image from an EF-S lens (or any of the 3rd party 'crop' only lenses) only covers the 1.6x crop sensor, in other words if you were to find a way of mounting an EF-S lens on a full frame sensor you'd have vignetting from HELL!!! LOL!

It just isn't going to work. If you think you will go full frame either buy EF-S and know that you will need to sell them when you move to FF or just don't buy them at all.

Hope this helps!

[round]

Correct me if I am wrong, should the subject be "EF-S to EF converter"? Because all EF-S bodies can accept EF lenses, there's no need for a converter from EF to EF-S.

[ron chappel]

Technically i think you would be right ,yes

[iHEARTfood]

Yea you are.
My bad.

[ron chappel]

Oh by the way-if nobody has said this simply so far....

It would be absolutally impossible to make an EF-s to EF converter/adapter.This is because EF-s lenses are longer at the back.You can't make something smaller by adding something:);)

[Wilt]

>>if nobody has said this simply so far....impossible to make an EF-s to EF converter/adapter.This is because EF-s lenses are longer at the back.<<

I only said that in the first reply to the OP!!! "Part of the issue with EFT glass on FF camera is that the mirror in suitable 1.6 crop cameras has been downsized and can clear the rear lens surface by a larger amount, so designers can make EFS glass rear element closer to the focal plane, so a FF camera's reflex mirror might hit the read element of EFS glass."

[tiziano]

Does such a thing exist?
If not, will it exist at some point in time? I have an XT and im thinking about upgrading to a 5D, or even buying a 35mm SLR, and I dont want to spend a bunch of money on EF-S or Sigma (APS-C sensor only) lenses if I cant use them when my photographical career expands.
Thanks

I see some confusion here.... All the EF lens will work on a 5D. The EF-s don't. If you buy EF lens, and not EF-S lens, your lens will work now on your XT and tomorrow on your 5D.

[Jon]

Yea you are.
My bad.
Title edited.

[shinchan]

I found about EF to EFs article at following link,
HERE ... (http://metku.net/index.html?sect=view&n=1&path=mods/efs/index_eng)

[Longwatcher]

Oh by the way-if nobody has said this simply so far....

It would be absolutally impossible to make an EF-s to EF converter/adapter.This is because EF-s lenses are longer at the back.You can't make something smaller by adding something:);)

Technically not completely true as you could have adaptive optics to correct for putting the lens farther away from the body, but it would likely seriously degrade the quality of the image. Also the image circle will cover more area then just 1.6x, however vignetting, color abberation and other nasty lens problems will occur past the 1.6x sensor format view. An adapter would just likely make it even worse.

But you are essentially correct as there is no good reason to manufacture (as opposed to hobby build) an adapter. But it could be done if someone wanted to.

And I almost forgot, you can use the extention tubes (mk II versions) as cheap adapters.

[jojohohanon]

This is because EF-s lenses are longer at the back.You can't make something smaller by adding something

But... you could potentially use them with extension tubes. Not that I'm certain you'd want to, but that would at least solve the physical size issue.

[Wilt]

But... you could potentially use them with extension tubes. Not that I'm certain you'd want to, but that would at least solve the physical size issue.

...and you gain what, at the expense of losing infinity focus?

[ron chappel]

Technically not completely true as you could have adaptive optics to correct for putting the lens farther away from the body....

Oops,yes you are absolutally correct.Me not thinking right:o