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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Which tube is that again? It is a bit tricky to assemble a setup in the field, so I leave home with everything connected.

EF14M replacement tube

I preferred the EF12 slightly. Please check your local sales tax laws. I have a load but have never really tested them properly in a mic. May 10, Rated 5 tuge of 5 by Anonymous from Great product Extension tubes are a great alternative to costlier macro lenses and less expensive close-up lenses.

I don’t have enough personal experience to have a genuine opinion either way. I don’t believe, however, that the tube can or will replace a good macro lens.

On the included comprehensive spec sheet this lens was not listed and I assumed tubw was because it was a fairly new lens. Gus Member NJ Posts: July 07, Rated 4 out of 5 by Edward T. See any errors on this page? Sending along a photo with and without the extension tube. 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.

I put together two of the “Royer mod” MXLs and they came out really really nice.

If you are tuube 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. As we all know, the photographic world is full of surprises. I’ve built a couple of mics before, but not from scratch. 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.


fe12 Rated 5 out of 5 by Anonymous from Having fun Photography is a hobby. It sounded more “hi-fi” – which is a bad way to describe a microphone I think, but it is the world that comes to mind.

Yes, the guys at Flea decribed the ef12 as being a litlle less agressive than the ef14 so more hi-fi is probably the best definition. Did ef112 have a chance to compare it in a ‘shoodoud ziduation’?

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International orders are processed the next shipping day. Send a link to this item so recipient can review, customize or exchange for an alternate of equal or lesser value. Voltages are different its true. Started by chefducuisine The Lab.

I found this thread which has some good info.

Before my membership was approved, I lurked for a long time and I’ve read many wonderful threads here, using the search function, about DIY Ualike microphones. I first tried out this macro extension tube on an EF-S ultra-wide zoom.

In Stock Update Location close. It also allows autofocus to function normally. There are other possible lens combinations but these two give me a shot at something less than macro. Be the first to review this item.

I took seriously his recommendation and I am satisfied with the results. All auto exposure features on the lens coupled to thbe extension tube work normally, and focusing is best done through varying your distance to the subject and fine focusing manually.

Next day, trying out the extension tube with the EF-SI found that a focused image was impossible to tueb 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. It’s the only part I have.


Canon Extension Tube EF 12 II A B&H Photo Video

I’m just hoping to end up with a good-sounding microphone. I like to shoot closeups but at this point don’t want to spend the money on a dedicated macro lens so got this extension tube and have had it for a week. 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 sf12 excellent photographic opportunities.

Started by jeremycox The Lab. I’ve done a fair amount of reading, and everyone has a passionate opinion about tubes to use in “U47 Inspired” mics.

The lenses I use are the nifty fifty and the mm kit. Hi there, For what i know of the ef12 in a u47, it has a tybe sensitivity and diferent heaters voltage.

MagnetoSound on January 05, So I’m not a total “rookie” but I do view this project as a “probable learning experience. Very likely it’s also JAN tibe in Max’s kit, and the resistor looks like 3. Other than that, the item is a very well designed and constructed Canon accessory that works flawlessly. Order in the next 0: Tune, 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.

So the EF 12 II extension tube has its limitations.