Buy EF12 vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. The EF12 is a pentode designed for RF or IF amplification at HF or MF. The wide metal tube envelope is 36 mm in diameter, and excluding the footless base . I found one blurry schematic for use with an EF12 tube, of which I have a a cleaner/readable copy of the EF12 schematic, validation that this.

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This extension tube is solidly built and does not introduce any flex between the sf12 body and lens. However, the EF12 is or at least was at one time the “2nd place” tube of choice for Wagner and Grosser, according to what I read on the internet.

International orders are processed the next shipping day. Use it mainly with my nifty fifty lens and have tried it with my mm f4 lens. But not a problem. I’m just hoping to end up with a good-sounding microphone. Started by sismofyt The Ef122. DiMaggio encouraged photographers to carry this highly portable extension with them at all times.

Very likely it’s also JAN like in Max’s kit, and the resistor looks like 3.

EF14M replacement tube

Rated 5 out of 5 by Anonymous from Typically good Canon product Very useful addition if you don’t wish to buy a macro lens. May 03, There are other possible lens combinations but these two give me a shot at something less than macro. Rated 5 out of 5 by Eytan Wulfsohn from Great addition to your lens collection I do a lot of wildlife photography and often come across insects and flowers that present excellent photographic opportunities.


It does not tubd with auto focus. I have a load but have never really tested tbe properly in a mic.

Which tube is that again? The lenses I use are the nifty fifty and the mm kit. I put together two of the “Royer mod” MXLs and they came out really really nice.

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In Stock Update Location close. Canon provides a usefel table with the extension tube that lists the change in minimum focal distance so that it can be used to pre-plan shots. Biasrocks on January 05, MagnetoSound on January 05, I found this thread which has some good info. Voltages are different its true. We should all have our own logos and badges, IMO. Gus Member NJ Posts: Send a link to this item so recipient can review, customize or exchange for an alternate of equal or lesser value.

I don’t believe, however, that the tube can or will replace a good macro lens.

Rated 5 out of 5 by Anonymous from Great on the Canon lens I bought this and the EF 12 II for use in photographing butterflies and am extremely tuhe with the results. Please check your local sales tax laws. Other than that, the item is a very well designed and constructed Canon accessory that works flawlessly. Be the first to review this item. On the ‘to do in ‘ list. So I’m not a total “rookie” but I do view this project as a “probable learning experience. I don’t have enough personal experience to have a genuine opinion either way.

I do wish that the tubes were slightly less expensive Canon or Kenko. As we all know, the photographic world is full of surprises. Did you have a chance to compare it in a ‘shoodoud ziduation’? Build quality is excellent and product has a very solid rf12.


You even did the badge??

Peluso Microphone Grade Vacuum Tubes

Free Expedited Shipping fyrvctsttx. Rated 4 out of 5 by Edward T. I use the word “Inspired” because some people get extremely offended at the notion that a microphone without the VF could even be called a “U Update Unrecognized Zip Code. Sending along a photo with and without the extension tube.

Ribbon microphone services http: I first tried out this macro extension tube on an EF-S ultra-wide zoom. Next day, trying out the extension tube with the EF-SI found that a focused image was impossible to achieve optically with the zoom set at less than approximately 50 mm, but at the longer end of the zoom range there was no problem in getting a perfectly focused macro image.

When using the camera’s TTL metering system, no exposure compensation will be required exposure compensation is required for handheld meters.

Thanks again for the links above. Rated 5 out of 5 by Anonymous from Having fun Photography is tbe hobby. I got a pretty good buy on it, NOS, and I’ve been wanting to build a mic anyway.

EF12 @ The Valve Museum

This is my first post here– sorry to dive right in with questions, but I do promise to stick around. Klaus runs a pretty tight ship, and is pretty passionate about having the discourse be ‘meaningful. No matter how much I varied my distance to the subject or adjusted the manual focusing ring the image remained completely out of focus. It is a bit tricky to assemble a setup in the field, so I leave home with everything connected.

Sredna Member Berlin, Germany Posts: