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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Canon provides a usefel table with the wf12 tube that lists the change in minimum focal distance so that it can be used to pre-plan shots. There are other possible lens combinations but these two give me a shot at something less than macro. So I’m not a total “rookie” but I do view this project as a “probable learning experience.

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Rated 5 out of 5 by Anonymous from Typically good Canon e1f2 Very useful addition if you don’t wish to buy a macro lens. Free Expedited Shipping fyrvctsttx. I’ve done a fair amount of reading, and everyone has a passionate opinion about tubes to use in “U47 Inspired” mics. On the included comprehensive spec sheet this lens was not listed and I assumed it was because it was a fairly new 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. Started by jeremycox The Lab. I got a pretty good buy on it, NOS, and I’ve tbe wanting to build a mic anyway. Send a link to this item so recipient can review, customize or exchange for an alternate of equal or lesser value.


Rated 4 out of 5 by Edward T. Very likely it’s also JAN like in Max’s kit, and the resistor looks like 3.

Ribbon microphone services http: Sounding ‘exactly’ like a ‘real’ U47 is of secondary importance to me; however, I’d like to end up in that “zone. July 07, MagnetoSound tuge January 05, Which tube is that again? When using the camera’s TTL metering system, no exposure compensation will be required exposure compensation is required for handheld meters. In Stock Update Location close. Enter new zip code to refresh estimated delivery time. This extension tube is hube built and does not introduce any flex between the camera body and lens.

This is my first post here– sorry to dive right in with questions, but I do e1f2 to stick around. It does not work with auto focus. DiMaggio encouraged photographers to carry this highly portable extension with them at all times.

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EF14M replacement tube

No matter how much I varied my distance to the subject or adjusted the manual focusing ring the image remained completely out of focus. 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 If you are thinking about getting into macro photography or just don’t have the need for a macro dedicated lens, then this may be a great product for you to try.

It also allows e1f2 to function normally. The result of using extension tubes is that the distance from the back of the lens to the film surface is longer, which means you can take photographs at shorter distances to the subject.


Thanks again for the links above. Klaus runs tubee pretty tight ship, and is pretty passionate about having the discourse be ‘meaningful.

The lenses I use are the nifty fifty and the mm kit. International orders are processed the next shipping day.

I do wish that the tubes tibe slightly less expensive Canon or Kenko. But not a problem. 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 happy with the results.

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Order in the next 0: Build quality is excellent and product has a very solid feel. You even did the badge?? Light metering works well but autofocus needs to be turned off.

Since I cannot carry a mm macro lens with me whenever go, and macro photography is not central to what I mostly capture, I am highly content with the idea of keeping the tube inside my shoulder bag or even inside my pocket. Extension tubes are thus commonly used for macro photography and sometimes for hube portraits.

I don’t have enough personal experience to have a genuine opinion either way. I certainly cannot afford a real VF Nice odd looking EF12 tube mic on german ebay.