"Outdated" ;-) Canon lenses used in galaxy seeking robots tests
- Thread starter LDS
- Start date
LDS said:
I think it's being used as a collimating lens in a spectrograph.
Making a spectrograph is on my to do list:
http://www.astrosurf.com/aras/design/design_us.htm
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Those "outdated" lenses still work fine for normal usage, too.
Just bought a EF 28-105mm f/3.5-4.5 for under $70 and replaced my too big and too heavy 24-105mm L. Also bought an old EF 100-300mm zoom for about the same price. The IQ is really good for non-pixel peepers. Both lenses have lens correction profiles, so they work very well on my 6D. Sold the "L" on Ebay. So now I have two lenses (I used to have only the one) and made over a couple hundred bucks as well. For those with limited funds, looking into the older mid-quality lenses may be a good idea.
Just bought a EF 28-105mm f/3.5-4.5 for under $70 and replaced my too big and too heavy 24-105mm L. Also bought an old EF 100-300mm zoom for about the same price. The IQ is really good for non-pixel peepers. Both lenses have lens correction profiles, so they work very well on my 6D. Sold the "L" on Ebay. So now I have two lenses (I used to have only the one) and made over a couple hundred bucks as well. For those with limited funds, looking into the older mid-quality lenses may be a good idea.
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