Avid Visions - Extension Tubes

Connor talking about extension tubes and macro photography. For example pictures, follow the links below (different tube lengths were used in the tube pictures, but the point is that they substantially increase how enlarged the subject is).

Human Eye (same eye and lens in both shots):
No tubes: http://www.flickr.com/photos/carchard/4916670789/
With tubes: http://www.flickr.com/photos/carchard/5299512735/in/photostream/

Zipper (same lens, same jacket):
No tubes: http://www.flickr.com/photos/carchard/4806792355/in/photostream/
With tubes: http://www.flickr.com/photos/carchard/4977686572/

Spider (same lens, different spider):
No tubes: http://www.flickr.com/photos/carchard/4936333072/
With tubes: http://www.flickr.com/photos/carchard/5019291892/

NOTE: To keep the video length down and to stop myself from rambling anymore, I was rather vague about some things. If you have any questions, please contact me!

Please contact us with any requests, comments, or ideas at
avid.visions@gmail.com
avidvisionsvideo on youtube
carchard on flickr
romverj on flickr

Category:

Film & Animation

Tags:

• avid
• vision
• visions
• photo
• photography
• photos
• macro
• extension
• tube
• tubes

[MDCCCLXXIV]

I would show some results achieved with extension tubes and not only say what it is.

Besides, I would mention that close-up lenses have no loss of light density afetr you mention that extension tubes require longer exposure time.

[AvidVisionsVideo]

@MDCCCLXXIV You seem to be very critical off all of our videos. While we do appreciate criticism, it seems, at this point, as if you are just being unnecessarily brash. We make these videos to share the knowledge that we personally know. It's not something people ask us to do, nor is it something we have a lot of time for. If you think you could make better videos, then I urge you to do so.

[susanamulita]

I need some help, i bought the extension for 10$ the one you are showing in this video and I have a canon rebel with a 18 55mm lens, I can't change the aperture in my camera, all I see when I connect the extension y f00// there is any way I can make it work. Plus I can focus the image it is all blur... Help Please Thanks

[AvidVisionsVideo]

@susanamulita Also, when you use extension tubes, you cannot focus at infinity anymore, you can only focus very close up. I believe I mention this in the video.

[AvidVisionsVideo]

@susanamulita Okay, so to change the aperture, first put the lens on your camera like you regularly would. Set your camera to the aperture you want your lens to be once you place them on the tubes. Press and hold your DOF Preview button and take the lens off the camera. Now put on your tubes and lens and your lens will be set to the aperture you set the camera to (it will still say f00).

[AvidVisionsVideo]

@susanamulita When you use extension tubes you lose your ability to focus at infinity. This means you will have to move your camera forward and back until you get your subject in focus. For the highest possible reproduction ratio you would want to zoom your lens all the way in (assuming its a zoom) and manually focus as close as possible; now, simply move forward and back and get your subject in focus.

[MDCCCLXXIV]

@AvidVisionsVideo Sorry for having been brash... iI am not critical of all your videos....it was just a spontaneous thought. Actually I like your videos, Otherwise I would not have bothered to post something.

I am using extension tubes for Underwater photography because there closeup lenses would not work, but on land I often use closeup lenses because they dont take away light which might be valuable for better depth of field and lower exposure times.

[AvidVisionsVideo]

@susanamulita For canon cameras, you need to set the aperture to the desired number and then hold down the depth of field preview button while removing the lens. This will keep the aperture from stopping to its highest setting possible. This should make the viewfinder a little less dark, but it wont fix the problem completely unless you are using wide open apertures. As for the focus, just try to get really close up to the object (like within 2 or 3 inches). It's tough

[AvidVisionsVideo]

@riteshmallik I will be able to answer your question better in about a week, seeing as I just ordered a reverse lens mount. Honestly, I will probably be using a combination of both extension tubes and a reverse lens. I've heard that reverse lensing doesn't drop image quality at all, but vignetting can become a big issue, and you really risk damaging your lenses because of how close you need to get. Also, the aperture settings must be changed manually with reverse lens (as opposed to transfer)