On 5 Jun 2004 13:54:27 -0700,
(Georgette
Preddy) wrote:
>Don't forget 1:1 means on the 35mm plane, so the more the DSLR crops
>the better. At 1:1 the image is actually 1.7X larger than 1:1 when
>using an SD9 for example. The 300D is a very poor choice for macro
>shooting, since it only has 6M sensors and historically has a severely
>loose AF system--both will kill if you like macro. It is extrememly
>expensive for a DSLR, too.
Umm, the 300D was the first quality DSLR to break the $1k barrier in the
U.S. I believe. I find it hard to believe you consider it expensive. I
also believe the accepted calculated conversion is closer to 1.6 than
1.7. That aside, most professional technique sites that I've visited
recommend using manual focus for the majority of macro work, regardless
of the camera make. The only knock I've seen on Canon macro lenses is
that they can be slow to AF or at times over-hunt. Direct comparisons
between the Canon EF 100mm f/2.8 USM Macro and the comparable Sigma lens
(the 105mm EX macro I think), seem to show that the Canon lens was much
sharper and had much better overall construction and elements. I am
suspecting that you are attempting a poor impersonation of a troll.
>The Sigma 105mm EX Macro, or 50mm EX Macro are optically the best
>lenses you can buy in their classes, and they are priced very
>reasonably.
I think the key words here are "in their class". All reviews I've read
indicate that Canon compatible Sigma lenses are merely reverse
engineered clones of the Canon originals. They can lack certain features
present in Canon lenses due to not picking up functions that are
'silent' during the reverse engineering process. It would be one thing
if Sigmas were designed from scratch, but who would know proprietary
protocols better than the original manufacturer and designer of the
camera/lens system? I can't see Sigma (or any other third party lens
maker) knowing Canon's system better than Canon itself.
>You might as well buy the professional grade DG Super. At $180 or so
>nothing else can touch its feature list and power for the price.
>With macro work, the swivel head (inc the ability to stand alone off
>camera) and high power are going to be a key to your success. Get a
>Sto-fen omnibounce for it and you'll have very powerful
>indirect/diffuse light. The Sigma's price is so good, I highly
>recommend getting 2 of them for macro work--they will radio-link in
>full TTL or slave off flash.
I have read much debate about this on the dpreview forums. Quite a few
seem very unhappy with the performance of the Speedlite 500EX and prefer
the Sigma 500 Super DG. Others seem convinced Metz makes the best
flashes. My local dealer swears by Quantum. People in this forum seem
happy with Speedlites. Definitely something I need to do more research
on. With such a disparity of opinions, it may mean all are of about
equal quality/performance and people just prefer what they are used to.
I am leaning towards Quantum after seeing how adaptable they are, but
have yet to make a decision.
As for a macro lens, I think I'm pretty much sold on the Canon 100mm
f/2.8 Macro USM. It seems to be the best quality lens that fits my needs
and price range.
Jeff
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