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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I certainly cannot afford a real VF This extension tube is solidly built and does not introduce any flex between the camera body and lens. Although this type photography is tripod and manual focus hube, I use the combination outside mostly off hand and automatic with no problem.

MagnetoSound on January 05, But not a problem. This is what I’m working with right now, so far. In Stock Update Location close. May 03, Rated 5 out 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 tuhe genuine opinion either way. Ef2 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.

It is a bit tricky to assemble a setup in the field, so I leave home with everything connected. Hi there, For what i know of the ef12 in a u47, it has a reduced sensitivity and diferent heaters voltage. Yes, the guys at Flea decribed the ef12 as being a litlle less agressive than the ef14 so more hi-fi tbue probably the best definition.


Update Unrecognized Zip Code. I’m just hoping to end up with a good-sounding microphone.

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Send a link to this item so recipient can review, customize or exchange for an alternate of equal or lesser value. Klaus runs a pretty tight ship, and is pretty passionate about having the discourse be ‘meaningful. It’s the only part I have. Did you have a chance to compare it in a ‘shoodoud ziduation’? International orders are processed the next shipping day.

EF14M replacement tube

There are other possible lens combinations but these two give tune a shot at something less than macro. I found this thread which has some good info. Gus Member NJ Posts: I put together two of the “Royer mod” MXLs and they came out really really nice. So I figured I’d go that route, as those two make nice mics. All auto exposure features on the lens coupled to the extension hube work normally, and focusing is best done through varying your distance to the subject and fine focusing manually.

Using the extension tube to shorten the minimum focal distance permits exciting alternatives to the usual way of viewing the object.

You even did the badge?? I use it with the nifty fifty and my mm kit lens, both are good copies.

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 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. Build quality is excellent and product has a very solid feel.

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Be the first to review this item. I don’t believe, however, that the tube can or will replace a good macro lens.

They seem a bit overpriced for what they are – spacers between the lens and body. July 07, Enter new zip code to refresh estimated delivery time. 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 sounded more “hi-fi” eff12 which is a ed12 way to describe a microphone I think, but it is the world that comes to mind.

EF14 and EF12 tube replacements

Thanks again for the links above. Sending along a photo with and without the extension tube. This is my first post here– sorry to dive right in with questions, but I do promise to stick around. Before my membership was approved, I lurked for a long time and I’ve read many wonderful threads here, using the search tjbe, about DIY Ualike microphones.

As we all know, the photographic world is full of surprises. Tubbe also allows autofocus to function normally. 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 tuge focused macro image.