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Registered: ‎06-25-2014

Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

[ Edited ]

@ebiggs1 wrote:

Years, and years ago I tried to use a 1.4x, a 2x and a 3x tel con stacked together on a FD 300mm f4 lens.  I found out quickly it was a horrible idea.  I suspect you will come to the same conclusion..................soon, I hope.

 

Quite so.

 

IMHO, the use of any tel-con or x-tube is a bandaide fix for a problem that requires the proper lens alone.

 

I don't althgether afree. My 70-200mm f/2.8 tolerates the 1.4x III quite well, I think.


RC4_1629.JPG

Bob
Philadelphia, Pennsylvania USA
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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

I tried it again, it worked.  I believe your comment about light had something to do with it.

 

Quality wasn't as good as I'm sure a 500mm or 600 mm with a 2x tc, but detail wasn't as bad as I expected.

 

Thanks again Peter, I appreciate your input.

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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

"Quality wasn't as good ..."

 

It all has to do with what you call "quality".  That elusive word has different meanings to everybody.

EOS 1DX and 1D Mk IV and several lenses!
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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

"Quite so.

IMHO, the use of any tel-con or x-tube is a bandaide fix for a problem that requires the proper lens alone.

I don't althgether afree. My 70-200mm f/2.8 tolerates the 1.4x III quite well, I think."

 

Perhaps acceptable, I freely admit.  One of the very few lens combos I agree do work well with the 1.4x tel-con is the ef 70-200mm f2.8L.

Two things, though, the ef 70-200mm f2.8L has a lot of IQ it can afford to loose.  Second did you take the same shot with, say, the ef 300mm f4L prime lens to compare?  No, I didn't think so!

 

A tel-con may be the answer but it is never the best answer, IMHO, of course, as always. Smiley Happy

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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube


@ebiggs1 wrote:

"Quite so.

IMHO, the use of any tel-con or x-tube is a bandaide fix for a problem that requires the proper lens alone.

I don't althgether afree. My 70-200mm f/2.8 tolerates the 1.4x III quite well, I think."

 

Perhaps acceptable, I freely admit.  One of the very few lens combos I agree do work well with the 1.4x tel-con is the ef 70-200mm f2.8L.

Two things, though, the ef 70-200mm f2.8L has a lot of IQ it can afford to loose.  Second did you take the same shot with, say, the ef 300mm f4L prime lens to compare?  No, I didn't think so!

 

A tel-con may be the answer but it is never the best answer, IMHO, of course, as always. Smiley Happy


Well, you knew the answer to that question, Ernie, because you know that I agree with your oft-stated opinion that modern zooms have relegated the prime lens to niche product status.  Smiley Wink

 

Our household contains, IIRC, two prime lenses: my wife's EF-S 60mm macro (which she likes a lot) and a Sigma 30mm f/1.4 that I bought as a low-light lens for my XTi thirteen years ago and have almost never used.

Bob
Philadelphia, Pennsylvania USA
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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

"... modern zooms have relegated the prime lens to niche product status."

 

Absolutely!  There are very good zooms out there now.  However, there are great zooms out there, too.  Canon's 70-200mm f2.8L series has proven that over and over. 

 

I have the 1.4x tel-con. I have used it perhaps a dozen times.  Maybe because I have two wonderful alternatives. One being the excellent, in its own right, ef 300mm f4L IS.

EOS 1DX and 1D Mk IV and several lenses!
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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

"Some raw files to play around with. x1.4II+x2III vs x2III."

 

Your files are too large. Nobody is going to d/l such large files.  Not me anyway!

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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

[ Edited ]

@ebiggs1 wrote:

"Some raw files to play around with. x1.4II+x2III vs x2III."

 

Your files are too large. Nobody is going to d/l such large files.  Not me anyway!


You still pay for each MB you use or don't have 406 MB of free space?

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Re: Stacking 2.0 & 1.4 Teleconvertor with 12mm ext tube

Yeah they are too big to glance at. A simple jpg would suffice for your claims.

EOS 1DX and 1D Mk IV and several lenses!
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