i just got one of these http://www.buyonlinenow.com/viewproduct.asp?sku=KTKMAG17C&source=ink
i think it will work as fresnel what do u guys think ?
i think it will work as fresnel what do u guys think ?
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
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
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 ..
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.
i didn't get a tv magnifier i m just saying that they are big .. i ll measure the focal length if it works ..
it says its telescopic, so maybe its something more complex then a fresnel... 130 is alot for just a fresnel..
any other pictures?
any other pictures?
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 ...
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
W
willie
good source for fresnel.
Try this out. Dual focus fresnel. WAY cheaper than DIYLabs (diyprojectorcompany.com) and I'm sure they ship a lot faster (who doesn't?). And I'm sure you can split it if necessary.
http://www.3dlens.com/enter.html?target=OHP_Fresnel_Lens.html
Try this out. Dual focus fresnel. WAY cheaper than DIYLabs (diyprojectorcompany.com) and I'm sure they ship a lot faster (who doesn't?). And I'm sure you can split it if necessary.
http://www.3dlens.com/enter.html?target=OHP_Fresnel_Lens.html
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.
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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