| boris333 |
| i have found a condenser that is 24X36 ? .. what is a condenser can i use this as fresnel lens ? |
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| boris333 |
| are those paper magnifiers same as fresnel lenses ? |
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| machs_fuel |
| yup. although i suppose that they would melt rather easily:cannotbe: |
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| rcabezas |
| They DO melt rather easily, I can attest to that.. :) |
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| boris333 |
| so what u guys think ? |
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| rcabezas |
I honestly do not know what to say. If what you got is in fact a fresnel, then you overpayed incredibly. $130 for a fresnel?? If you read around these forums, you will find out that you can get fresnels a lot cheaper than that.
Heck, you can even get a complete OHP on ebay for $25 and get the fresnel off of it. You can also find them on the web for $20-$40, and also several members here sell them..
Now, maybe the fresnel you got is ultra-high quality or something that would justify that price, I don't know. What's the focal length on it, anyway?
Raf |
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| boris333 |
| i didn't pay $130 . i got it of ebay for $ 70 CND shipped .. i don't know what the focal length is ? the size is 10.5X13.5 ... can't wait on diylabs ... also u can get those tv magnifiers .. big fresnel .. but i don't know if this is gonna work i ll let u all know when i get it .. |
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| rcabezas |
| don't get the big tv fresnels, they are just page magnifiers (low quality fresnels). to find out the focal length you could focus the sun through the lens on the ground and measure how high you have it. |
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| boris333 |
| i didn't get a tv magnifier i m just saying that they are big .. i ll measure the focal length if it works .. |
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| machs_fuel |
it says its telescopic, so maybe its something more complex then a fresnel... 130 is alot for just a fresnel..
any other pictures? |
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| boris333 |
| didn't pay 130 got it for $70 CND .... don't have any other pics because i still don't have the item .. but when it comes i will see if it will work as a fresenl ... |
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| ace3000_1 |
| quote: | | i will see if it will work as a fresenl |
What you buy then? if its not a frensel, its not a frensel, thats that lol.
I did see the link, for a frensel to work you have to have 2 of them, a top and a bottom, thats only 1 and more then likley a hardened page magg.
2 frensels are exactly the same as having 2 pcx lenses, we use frensels because of the sheer cost of pcx lenses that we would require in that size, and weight, its actually why the frensel was invented.
Trev |
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| boris333 |
| no it dosn't work .. its only a magnifier .. have to keep waiting on lenses from diylabs now . |
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| The_Mazta |
| i got some condensors goin cheap if you want, |
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| boris333 |
| i don't need any .. maby someone else wants some ? |
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| doughboy |
| The biggest fresnel is 12.2 at 3dlens, still too small for 15" lcds. The price isnt much cheaper unless you order 5-10+. One lens shipped seamail was $37 at 30-70 days delivery. |
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| doughboy |
| The 15.5s at 3dlens are a bit more than diylabs. You will need to buy two for DIY. That place would be great if shipping was cheaper. |
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| boris333 |
| yeah i wonted to get those 15.5X15.5 lenses from there but i didn't i got them form diylabs .. |
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