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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Aug 2005 (Wednesday) 06:07
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500-1000 mm opteka lense

 
hairybobby
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Aug 17, 2005 06:07 |  #1

Has anyone tried these 500-1000mm lenses with a fixed aperture... opteka.

do they work ok... any info would be appreciated


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Nikolas
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Aug 17, 2005 06:39 |  #2

how about waste of money?


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CyberDyneSystems
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Aug 17, 2005 06:44 |  #3

That pretty much sums it up nicely.


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hairybobby
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Aug 17, 2005 10:09 as a reply to  @ CyberDyneSystems's post |  #4

from what I have seen .. or understand you cannot focus these lenses with auto focus.. but with sports photos or surfers who are always going to be twenty metres(70 feet) away then that is no problem.. as they will always be at infinite

what is it thats specifically wrong with these lenses.... is it just mirror lenses full stop are useless


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Nightcrawler
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Aug 17, 2005 10:17 |  #5

Mirror lenses have weird bokeh. Instead of a solid circle as a highlight that is out of focus, it would be a doughnut shape instead. That would be a bit more distracting. I am sure there are other reasons, but that is the main one that would keep me away from a mirror lens.



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hairybobby
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Aug 17, 2005 10:23 |  #6

if all I am wanting to do is take pictures of surfers in the far distance then it should work?

or are mirror lenses really completely useless


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defordphoto
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Aug 17, 2005 10:35 as a reply to  @ Nightcrawler's post |  #7

Welcome to the forum, Bobby. You have not found the deal of the century. The old saying of you get what you pay for definitely applies here. It's nothing more than a cheap telescope. You would NOT be happy with this.


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defordphoto
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Aug 17, 2005 10:36 as a reply to  @ hairybobby's post |  #8

hairybobby wrote:
if all I am wanting to do is take pictures of surfers in the far distance then it should work?

or are mirror lenses really completely useless

No.

Yes.

:)

And welcome to the forum! :) :)


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buze
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Aug 17, 2005 11:19 |  #9

I disagree!

I might get myself a Rubinar 500mm f5.6 (yeah, 5.6, not 8 ) because I've seen a gallery with pretty impressive results for a mirror lens. OK, it's not 500 L but it's about 1/20 of the price, and it can be pretty sharp, and show pretty good saturation. And it's cheap enough that you don't have to break the bank to play with it...
And it has the donuts highlights, but heck, my Takumar 50mm f1.4 has wierd highlights too, and I like it anyway! And even the 70-300 DO has wierd "multidonuts" highlights and nobody seems to care so..,
And please, don't mix up "bokeh" and "highlights" they are totaly different characteristics. The bokeh of that lens is "ok", it's the highlights that are donuty.
Check that out:
http://ray3d.free.fr/R​ubinar500/gallerie.htm​l (external link)


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mbellot
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Aug 17, 2005 11:32 as a reply to  @ buze's post |  #10

buze wrote:
And please, don't mix up "bokeh" and "highlights" they are totaly different characteristics. The bokeh of that lens is "ok", it's the highlights that are donuty.
Check that out:
http://ray3d.free.fr/R​ubinar500/gallerie.htm​l (external link)

Nice pictures for a "cheap" lens, but the donuts are very distracting in a couple of images (mostly the park ones), but barely noticable in others interestingly enough.

Thanks for the samples.




  
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defordphoto
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Aug 17, 2005 11:39 as a reply to  @ mbellot's post |  #11

Where's the closest Krispy Kreme? :lol:

Aside from the funky bokeh, those aren't half bad. You could fix that in PS too...


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scr7b
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Aug 17, 2005 11:53 |  #12

The bokeh is horrible in the park shots, but I suppose if the lens is cheep cheep it could be worth a punt just to have a new toy!


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elkootcho
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Aug 17, 2005 11:56 |  #13

Those doughnut reflections are REALLY weird.


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CyberDyneSystems
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Aug 17, 2005 16:57 |  #14

if it were feasible I would be willing to place a significant bet that if either of you get a mirror lens.. it will be sold in under a year...

thus far this has been the case of those I know who have insisted on geting one.. 100% resale .. usually in about a month.


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tim
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Aug 17, 2005 17:26 as a reply to  @ scr7b's post |  #15

scr7b wrote:
The bokeh is horrible in the park shots, but I suppose if the lens is cheep cheep it could be worth a punt just to have a new toy!

It's very distracting and takes away from the image, but like CDS said you might be able to do something in photoshop to fix it up a bit.


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500-1000 mm opteka lense
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