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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 16 May 2009 (Saturday) 16:00
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A few good reasons why there is not a lens adapter for every lens??

 
shayneyasinski
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May 16, 2009 16:00 |  #1

why is it there is not some manufacturer that makes an adapter that will let one use every lens ever made on a Canon??

They did it with USB ...


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DDCSD
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May 16, 2009 16:09 |  #2

There are adapters that will adapt almost any lens to fit a Canon EOS body. Just not universal ones, and you only have manual focus.

The problem is that lenses are designed for particular bodies, and have varying distances from the rear element to the sensor. Sometimes they either stick in too far and hit the mirror or you cannot properly focus the lens at infinity, etc.


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gasrocks
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May 16, 2009 16:49 |  #3

The issue is register distance. If a lens has a longer distance then you can easily convert/adapt it to use on an EOS body. However, if you have a LSM (Leica screw mount for example) lens, the lens would only focus to infinity (and most all other distances) if it was mounted inside of the Canon body. I.E. not possible.


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May 16, 2009 17:36 |  #4

DDCSD wrote in post #7934040 (external link)
There are adapters that will adapt almost any lens to fit a Canon EOS body. Just not universal ones, and you only have manual focus.

The problem is that lenses are designed for particular bodies, and have varying distances from the rear element to the sensor. Sometimes they either stick in too far and hit the mirror or you cannot properly focus the lens at infinity, etc.

or in the case of Canon FD lenses, the base is too close to the same size as EF lenses so there's no room for an adapter.


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shayneyasinski
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May 17, 2009 23:45 |  #5

It makes sence I guess..
Would be nice if they would all use the same mount but that will never happen I am sure.
I bet one day we will see a no name camera body show up that will have interchangable mounts that will let you use any type of lens, but then if you think about it ... why?

todays glass is way better than most old stuff anyway .

hereI go answering my own questions again....


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May 17, 2009 23:48 |  #6

shayneyasinski wrote in post #7941055 (external link)
It makes sence I guess..
Would be nice if they would all use the same mount but that will never happen I am sure.
I bet one day we will see a no name camera body show up that will have interchangable mounts that will let you use any type of lens, but then if you think about it ... why?

todays glass is way better than most old stuff anyway .

hereI go answering my own questions again....

It exists already, the RED can use Canon EF-mount, Nikon F-mount or RED's own mount

With the EF mount you can mount just about every lens ever made to begin with...and the F-mount option is fully electronic and supports G-type Nikkors as well [Theres rumors a few of RED's lenses are designed secretly by Nikon..]

Keep in mind however, a RED is a VERY expensive piece of equipment

The reason its so hard is because camera makers MAKE it hard, They want you to buy THEIR lenses, not someone elses...They want to lock you into a system because when you're invested into a system its very expensive/hard to switch to someone else..or sometimes its engineering ideas..

Canon for instance designed the EF mount to be completely free of any mechanical couplings, and also wanted a large mount diameter, This is why Canon has lenses like the 24mm f/1.4, 35 f/1.4, 50 f/1.2 [and 50mm f/1.0] 85mm f/1.2, 200mm f/1.8, 200mm f/2 and ETC because simply, they can be made a bit bigger around...These lenses are a bargain compared to comparable lenses on other systems [The only other 85mm f/1.2 I know of is a Zeiss one that costs 3x the amount of the Canon...The only other 50mm f/1 is the Leica Noctilux which isnt even an SLR lens and is over $7k used!]

I'm not sure why placing the mount closer to the film plane is better..but im sure theres a few reasons...I think it has to do with less light loss [Since the light has to travel less distance] and i believe it also has sharpness advantages [Rangefinder lenses often almost touch the film plane for instance and are usually shockingly sharp]


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May 17, 2009 23:52 |  #7

Oh, and the main reason is that the camera makers make almost nothing on the camera bodies. They make most of their money in lenses and accessories. A camera that is not locked into a certain lens system would have to be priced very high for them to make any money, because they're not likely to sell you very many lenses. :)


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shayneyasinski
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May 18, 2009 14:49 |  #8

KenjiS wrote in post #7941067 (external link)
It exists already, the RED can use Canon EF-mount, Nikon F-mount or RED's own mount

With the EF mount you can mount just about every lens ever made to begin with...and the F-mount option is fully electronic and supports G-type Nikkors as well [Theres rumors a few of RED's lenses are designed secretly by Nikon..]

Keep in mind however, a RED is a VERY expensive piece of equipment

The reason its so hard is because camera makers MAKE it hard, They want you to buy THEIR lenses, not someone elses...They want to lock you into a system because when you're invested into a system its very expensive/hard to switch to someone else..or sometimes its engineering ideas..

Canon for instance designed the EF mount to be completely free of any mechanical couplings, and also wanted a large mount diameter, This is why Canon has lenses like the 24mm f/1.4, 35 f/1.4, 50 f/1.2 [and 50mm f/1.0] 85mm f/1.2, 200mm f/1.8, 200mm f/2 and ETC because simply, they can be made a bit bigger around...These lenses are a bargain compared to comparable lenses on other systems [The only other 85mm f/1.2 I know of is a Zeiss one that costs 3x the amount of the Canon...The only other 50mm f/1 is the Leica Noctilux which isnt even an SLR lens and is over $7k used!]

I'm not sure why placing the mount closer to the film plane is better..but im sure theres a few reasons...I think it has to do with less light loss [Since the light has to travel less distance] and i believe it also has sharpness advantages [Rangefinder lenses often almost touch the film plane for instance and are usually shockingly sharp]

the red is a pro video camera is it not?

I know a guy that worked with one and it blows away 35mm film video!
$20 000 for basic kit I think it said?


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May 18, 2009 14:52 |  #9

shayneyasinski wrote in post #7944676 (external link)
the red is a pro video camera is it not?

I know a guy that worked with one and it blows away 35mm film video!
$20 000 for basic kit I think it said?

It can also do stills in some configurations


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shayneyasinski
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May 18, 2009 16:03 |  #10

http://www.red.com/ (external link)


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May 18, 2009 16:15 |  #11

shayneyasinski wrote in post #7945138 (external link)
http://www.red.com/ (external link)

They have a 25-100 f/2.8 for FF35 [IE, 35mm or what we here call "Full Frame" :D]

They also seem to treat their customers well with that upgrade package they offer people with Red ONE cameras


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May 18, 2009 17:06 |  #12

shayneyasinski wrote in post #7941055 (external link)
It makes sence I guess..
Would be nice if they would all use the same mount but that will never happen I am sure.
I bet one day we will see a no name camera body show up that will have interchangable mounts that will let you use any type of lens, but then if you think about it ... why?

todays glass is way better than most old stuff anyway .

hereI go answering my own questions again....

That's debatable...


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May 18, 2009 17:15 |  #13

argyle wrote in post #7945400 (external link)
That's debatable...

Agreed.

To the OP, check here and here (external link) to see samples from other lenses (manual focus) mounted on native bodies.

Some of the lenses are much better than native lenses.


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shayneyasinski
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May 18, 2009 22:45 |  #14

argyle wrote in post #7945400 (external link)
That's debatable...

let me dig here....
todays glass has auto focus and may be a little easier to use.


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Rodinal
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May 18, 2009 22:52 |  #15
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shayneyasinski wrote in post #7934004 (external link)
why is it there is not some manufacturer that makes an adapter that will let one use every lens ever made on a Canon??

They did it with USB ...

No, they didn't. USB doesn't guarantee that the thing will work with every machine. You still need a different driver for each.

So even if you have the same mount, every lens has software on the chips inside it (mostly for AF-ing). Then you must get the whole industry to agree on a single communication language between the camera software and the lens software.


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A few good reasons why there is not a lens adapter for every lens??
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