Canon EF vs. EF-S Query?!
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Canon EF vs. EF-S Query?!

 
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Doug Mitton
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Posted: Sun Nov 28, 2004 6:07 pm    Post subject: Canon EF vs. EF-S Query?! Reply with quote

Hello all;

When I wanted to make the plunge into DSLR I took the recommendation
of some friends and selected the Canon line and the Rebel in
particular as an entry level model. My plan is that in the future I
can gladly accept hand-me-downs from my friends ... ie. upgrading to a
used body that is steps up from the Rebel.

I want my investment in accessories to be portable to the higher level
models so I have only been buying EF lenses. I use the supplied EF-S
that came with the Rebel to fill a niche.

I have seen several posts here making various arguments concerning EF
vs. EF-S lenses. The point of my post is why would anyone want to
select the newer (restricted useage) EF-S lenses over the standard EF
version? Is there some advantage that I haven't been able to pick out
of the discussions so far?

I hope this doesn't start a war but maybe just bring to light some
technical difference I haven't been able to pick up on myself.

Thanks in advance!

--
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SPAM Reduction: Remove "x." from my domain.
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Skip M
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Posted: Sun Nov 28, 2004 6:08 pm    Post subject: Re: Canon EF vs. EF-S Query?! Reply with quote

"Doug Mitton" <doug_mitton@hotmail.x.com> wrote in message
news:2rtjq09ue74ir02padedk74ek5oesdooka@4ax.com...
Quote:
Hello all;

When I wanted to make the plunge into DSLR I took the recommendation
of some friends and selected the Canon line and the Rebel in
particular as an entry level model. My plan is that in the future I
can gladly accept hand-me-downs from my friends ... ie. upgrading to a
used body that is steps up from the Rebel.

I want my investment in accessories to be portable to the higher level
models so I have only been buying EF lenses. I use the supplied EF-S
that came with the Rebel to fill a niche.

I have seen several posts here making various arguments concerning EF
vs. EF-S lenses. The point of my post is why would anyone want to
select the newer (restricted useage) EF-S lenses over the standard EF
version? Is there some advantage that I haven't been able to pick out
of the discussions so far?

I hope this doesn't start a war but maybe just bring to light some
technical difference I haven't been able to pick up on myself.

Thanks in advance!

--

There are lenses at widths available in EF-S that aren't available in the
regular EF line, such as the 10-22 EF-S which would be the equivalent of the
16-35 in the EF lenses, or with features, like the 17-85 IS, which comes
close to giving the same field of view with the RebelD and 20D as the 28-135
IS does on film or a full sensor.

--
Skip Middleton
http://www.shadowcatcherimagery.com
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Eric Gill
Guest





Posted: Sun Nov 28, 2004 6:11 pm    Post subject: Re: Canon EF vs. EF-S Query?! Reply with quote

Doug Mitton <doug_mitton@hotmail.x.com> wrote in
news:2rtjq09ue74ir02padedk74ek5oesdooka@4ax.com:

Quote:
I have seen several posts here making various arguments concerning EF
vs. EF-S lenses. The point of my post is why would anyone want to
select the newer (restricted useage) EF-S lenses over the standard EF
version? Is there some advantage that I haven't been able to pick out
of the discussions so far?

Either they are not planning on ever upgrading to the next price slot model
and feel that the future models in the low end dSLR slot is going to retain
it's ability to use these lenses for a while, or they are figuring they
will get enough use out of the lens in the meantime for the cost.

I'm currently not of either school of thought. For a super-wide angle, I'm
going to go with Sigma's offering, save a bit of cash, and have a lens that
will work on any Canon-compatible body in the forseeable future. I already
had the 28-135 IS, and that pretty well covers the area the EF-s jobbies
are likely going to be built at.
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Jim Townsend
Guest





Posted: Mon Nov 29, 2004 12:18 am    Post subject: Re: Canon EF vs. EF-S Query?! Reply with quote

Doug Mitton wrote:


Quote:
I have seen several posts here making various arguments concerning EF
vs. EF-S lenses. The point of my post is why would anyone want to
select the newer (restricted useage) EF-S lenses over the standard EF
version? Is there some advantage that I haven't been able to pick out
of the discussions so far?

Start shopping for a zoom lens that starts at 18mm, goes to 55mm
and only costs 100 bucks US..

To save you the time and trouble.. There are none. Canon's
EF-S 18-55 is great bang for the buck..

Now start shopping for a rectilinear wide angle zoom lens that's
10mm on the wide end :-) :-)

I own a 10D and can't use the EF-S mount.. I'm kind of jealous.
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Ken Tough
Guest





Posted: Mon Nov 29, 2004 12:13 pm    Post subject: Re: Canon EF vs. EF-S Query?! Reply with quote

Doug Mitton <doug_mitton@hotmail.x.com> wrote:

Quote:
I have seen several posts here making various arguments concerning EF
vs. EF-S lenses. The point of my post is why would anyone want to
select the newer (restricted useage) EF-S lenses over the standard EF
version? Is there some advantage that I haven't been able to pick out
of the discussions so far?

It's possible to make a good quality 'crop format' lens which is
a bit smaller and lighter than 35mm format lenses. Nikon's
18-70 DX would surely be heavier and slightly larger in a 35mm
format.
--
Ken Tough
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Gisle Hannemyr
Guest





Posted: Mon Nov 29, 2004 12:13 pm    Post subject: Re: Canon EF vs. EF-S Query?! Reply with quote

Doug Mitton <doug_mitton@hotmail.x.com> writes:

Quote:
I have seen several posts here making various arguments concerning
EF vs. EF-S lenses. The point of my post is why would anyone want
to select the newer (restricted useage) EF-S lenses over the
standard EF version? Is there some advantage that I haven't been
able to pick out of the discussions so far?

There are at least three advantantages with EF-S:

1. Cost. All other things being equal, a lens designed for a smaller
image circle should cost less to manufacture than one that also has
to perform for a larger image circle.

2. Bulk and weight. A lens designed for a smaller image circle should
be smaller an weigh less than one with the same focal length
designed for a larger image circle.

3. Ultrawideness. Canom does not offer a 10-22mm zoom that cover
the full image circle of 35mm film. If it ever did, the lens
would probably be very heavy and very expensive.

In theory, there should be a fourth advantage:

4. Quality. By optimizing the design for a smaller image circle, a
lens should have higher resolution (as measured in lp/mm) than
a lens that also needs to cover a larger circle.

However, none of the EF-S lenses manufactured so far has been of
outstanding optical quality - they are consumer grade lenses.
But in principle, if Canon wanted too - they should be able to make
an L-grade lens in the EF-S mount lens that outresolved its bigger
brother.
--
- gisle hannemyr [ gisle{at}hannemyr.no - http://folk.uio.no/gisle/ ]
========================================================================
When you say you live in the real world, which one are you referring to?
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