Archive for the ‘camera lenses’ Category

P2 FRESNEL LENS PARABOLIC MIRROR APERTURE SOLAR FRESNEL POWER CPV

Thursday, March 11th, 2010

This is Part 2. Solar Training, Understanding optics of Parabolic Mirrors and Fresnel Lenses. Cheap Telescope astronomy. Telescope first surface mirror. PART 1 IS HERE: http://www.youtube.com/watch?v=QpkWTdXwTnwDuration : 0:5:37

What is that attachment on the end of camera lenses?

Monday, March 8th, 2010

It looks like 4 black flaps that are hinged. I see them on telephoto lenses. What are they for? A petal style lens hood. There are also plain, round hoods. Both are designed to keep light from coming into the lens from the side. The petal hoods are generally lens specific. You may ...

Into the Lens by Yes

Monday, March 8th, 2010

From Wikipedia: "I Am a Camera" is a synthpop song by The Buggles from 1981 of "Video Killed the Radio Star" fame, from their second album, Adventures in Modern Recording. Trevor Horn and Geoff Downes started writing the song before joining up with Yes. A version of the song was released ...

Who can give me helpful advice on camera lenses?

Saturday, March 6th, 2010

I want to photograph weddings/receptions, brides, egagements, families, etc. I have a Nikon D40 with the lens it came with. 18-55mm. How can I learn more about photography? What lenses to use, and what equipment to have. I'm starting with nothing more than the desire to learn and cannot afford a ...

Can I clean camera lenses and filters using isopropyl alcohol?

Thursday, March 4th, 2010

I cleaned some old filters with it earlier and it seemed to be fine, but I'm a bit too afraid to try cleaning expensive lenses with it unless I know it's all right to do so. All right, thank you. Would it still be all right to use it on filters? ...

Which lenses do you recommend for my Cannon AE-1 program camera should I buy?

Sunday, February 28th, 2010

I recently purchased this camera. It comes with three lenses. FD 50 mm 1:1.8, 2x teleconverter FD and a 200 mm Macro zoom lenses. Which other lenses would you recommend I purchase? I really know nothing about the camera or lenses. I bought them for a gift for my ...

Digital SLR Camera Lenses 1 of 2

Friday, February 26th, 2010

If you bought a DSLR, but have not expanded your photography into lenses besides the kit lens, check out this video and part 2 to learn about what other types of lenses are available. Be sure to watch the second part of this video. More Info: http://actuallysimple.com/gadgets/dslr-camera-lenses/Duration : 0:5:0

In the old photos, in taking their portraits, why do people need to look anywhere but the camera lenses?

Friday, February 26th, 2010

I don't get the point on not looking at the camera :P Don't you just wonder? peopl in the 1800s-1900's look anywhere but the camera lenses. I find it funny Styles and looks have trends that come and go. However, the main reason for not looking directly into the camera in ...

What is the history of Vemar camera lenses?

Wednesday, February 24th, 2010

I think it was a post-WWII Japanese company. They mainly made screw mount lenses. I don't think the company still exists or possibly it was bought out. I was able to find a few lenses for sale in a couple places, however, no company info whatsoever anywhere on the ...

What is the difference in Digital camera lenses?

Monday, February 22nd, 2010

I want to buy digital camara but an confused about the lenses, Leica (Panasomic), Zeiss, etc. I was looking at Olympus Stylus model but there was no specs on the lens. Someone told me some lenses are glass (Leica & Zeiss) and they are the best. Olympus ...