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Old Aug 21, 2007, 12:03 AM   #1
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Anyone have a Opteka 500mm Is it any good?

I am looking to buy one but dont know if I should just wait and save or try it. Does it shoot clear pictures. I use a Canon 20D
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Old Aug 21, 2007, 2:21 AM   #2
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I would say don't waste your money. Save up for a good lens.
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Old Aug 21, 2007, 12:35 PM   #3
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RP33 wrote:
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Anyone have a Opteka 500mm Is it any good?

Does it shoot clear pictures. I use a Canon 20D

I'm sorry - is this a $75 500mm lens and you want to know if it's a good lens?

500mm and $75 ?

You can spend $75 and get a very good 50mm lens. but not a good 500mm lens.

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Old Aug 21, 2007, 12:53 PM   #4
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I am just trying to find a cheap way out to get by until I can save up for the nice lens. So what you are saying is the Opteka would be a waste of time and money?
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Old Aug 22, 2007, 9:30 AM   #5
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focusing will be very slow and quality poor. But, if you've got $75 burning a hole in your pocket no reason not to try. But if your goal is to shoot football with it - as your other post implies I wouldn't expect many quality shots.
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Old Aug 22, 2007, 9:56 AM   #6
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Focusing is not just poor - It's manual focus
-> And at f/8 good luck!

But IMO the image quality is acceptable if you can live with the above limitations:
http://www.pbase.com/dang/500
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Old Aug 22, 2007, 10:07 AM   #7
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NHL wrote:
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Focusing is not just poor - It's manual focus
-> And at f/8 good luck!

But IMO the image quality is acceptable if you can live with the above limitations...
Great point - which means you'll be shooting ISO 800 or higher quite a bit.

Here's a shot taken about 7:45 pm the other day - so as the sun was starting to go down. f2.8, 1/800 at ISO 800



Now, let's say you can get by with 1/400. In the same lighting, f8 1/400 would require ISO 3200. And with manual focus, keeper rate will be pretty bad. Even a 5.6 lens would be ISO 1600. Daytime will be a little better. But at f8 you'll probably still be shooting at ISO 800 a lot.

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Old Aug 24, 2007, 9:55 PM   #8
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I bought the Opteka 500 mm with the same things in mind that you're asking about: to have some fun experimenting with a very long focal length in a mirror lens for very little money (some filters cost more than it does).

I have had a lot of fun playing around with this. It brings action from as far as two soccer fields away in close. There's little depth of field of course and you're limited to a fixed f/8 aperture. (They do provide some filters that attach to the rear of the lens including a couple neutral densityvarieties). Mount is a T-mount, but if you specify your brand you get an adaptor. Mine came with an adaptor to use on my Canon EOS (digital rebel).

Tripods strongly recommended. the following picture was snapped with the Opteka. Resolution has been scaled down quite a bit to meet the boar's specs.

Above all, hope you're having fun with your photography.

- PhotosbyErich
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Old Aug 25, 2007, 10:20 AM   #9
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Hmm. Not bad for $75... The Cat shots that are linked and some of the others ?? What is the focus range The min distance is 33 feet?

I would think most long distance shots would be on the infinity setting on most lenses and thus not much to focus, but I have a feeling this lens's infininty is quite a bit more?


Is the DOF really bad the socor net looks really out of focus?
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Old Aug 25, 2007, 2:46 PM   #10
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anthlover wrote:
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Is the DOF really bad the socor net looks really out of focus?
No that's the typical 'weird' bokeh resulting from a mirror lens design...
-> notice thoses circles in the foliages vs the creamy smooth background from JohnG Sigma 120-300?
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