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Questions tagged [extension-tubes]

An extension tube - is used with interchangeable lenses to focus closer, useful in macro photography. The tube contains no optical elements; its sole purpose is to move the lens farther from the image plane. The farther away the lens is, the closer the focus, the greater the magnification, and also the greater the loss of light (requiring a longer exposure time).

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32
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4answers
31k views

How can I calculate what the effect of an extension tube will be?

There must be a mathematical description of the difference that an extension tube makes to a lens -- is it something that can be easily described? (For example, with teleconverters you can say things ...
24
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2answers
9k views

What are the biggest differences between Reversal Rings, Extension Tubes and Macro Lenses?

As far as I understand all three options help you do macro photography but are their other reasons for having the three different items? I figured reversal rings and extension tubes were just for the ...
22
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3answers
4k views

Which suits better for hobby usage: extension tubes vs. close-up filter?

I am looking to do a little macro work, but am not ready to invest in a macro lens. For hobby work like photographing flowers and such would it be better to invest in a set of extension tubes or in a ...
20
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1answer
864 views

What are Extension Tubes?

What are Extension Tubes?
29
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7answers
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What am I losing when using extension tubes instead of a macro lens?

After playing around with macro photography on-the-cheap (read: reversed lens, rev. lens mounted on a straight lens, passive extension tubes), I would like to get further with this. The problems with ...
9
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4answers
5k views

How do extension tubes affect focusing distance?

How do extension tubes affect focusing distance? More specifically, what I mean to ask is : why does the maximum focusing distance become shortened when an extension tube is attached? - Why does the ...
2
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5answers
16k views

Is there a way to adjust the aperture of a Nikon lens without a camera or physical aperture ring?

If I have a camera that does not have any electronic connection to the lens, is there any way to adjust the aperture on the lens if it does not have a physical aperture ring? We're using a scientific ...
6
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1answer
2k views

How can I calculate the change an extension tube makes to the maximum magnification of a lens? [duplicate]

Possible Duplicate: How can I calculate what the effect of an extension tube will be? My understanding is that extension tubes increase the magnification of lenses by reducing their minimum ...
9
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4answers
2k views

Why don't lens mount adapters have the same effect as extension tubes?

I use a Metabones adapter for Canon lenses on a Sony body. Why doesn't the lens adapter, which sets the lens further from the sensor, have the same effect as using extension tubes, allowing closer ...
2
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4answers
2k views

What do I need for extreme macro photography?

I am wanting to venture into some extreme macro photography, specifically insects, such as this shot. After doing some research I have believe that my 1::25 macro lens will be sufficient if I am to ...
2
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4answers
1k views

How do I choose an extension tube for macro photography?

I'm looking for an extension tube for my DSLR. Any suggestions? I see a lot on the internet, but I cannot figure out which is the best.
5
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2answers
623 views

Why doesn't an extension tube “crop” the picture?

Ever since I've heard of extension tubes I've been curious if they somehow crop the image that appears on the camera sensor. Based on this YouTube video, the answer is "no" (at least not that I can ...
0
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4answers
2k views

Can I combine extension tubes and macro filters at once to give better macros?

I don't have a dSLR at the moment but am planning to buy one. Wanted to know the cheaper methods to shoot in macro. Will using macro filters and extension tubes concurrently increase the efficiency of ...
13
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3answers
3k views

Does a camera's crop factor apply to the magnification of macro shots?

If I have a lenses (or in my case extension tubes) that would allow the lens to magnify 1:1, does a 1.5x crop factor body make it really 1.5:1 ?
14
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8answers
8k views

Macro photography with an ultra-wide lens and extension tubes?

While reading some reviews of Canon EF-S 10-22mm f/3.5-4.5 USM, I was a bit surprised to notice that the lens is supposed to be compatible with 12mm and 25mm extension tubes, and with those one should ...
5
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4answers
632 views

When using a teleconverter on a Canon DSLR, what happens to EXIF data?

When mounting lenses via a teleconverter like the Canon 2x, does the EXIF metadata record this information somehow? Will the recorded focal length be adjusted by the camera or the extender? Is there a ...
2
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2answers
728 views

How can I take wide angle macro photos with a Nikon APS-C camera?

I am looking for wide angle macro solutions for Nikon APS-C cameras to create images similar to these. By "wide angle" I mean 20 mm (30 mm equiv.) or wider, and by "macro" I'm hoping to get close to ...
14
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1answer
395 views

What are the limits of extension tubes?

Given lighting is not a problem, can you hit a limit where you have too much extension tubes (a very long tube) and the quality of the image will suffer? For example a diffraction limit will be hit ...
8
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2answers
838 views

Are the contacts on different extension tubes in Soligor Pentax AF set supposed to be different?

My extension tube set (Soligor for Pentax AF + P/KA) was not working correctly on my DSLR, so I checked the tubes, and found an interesting difference. It has three tubes (12mm, 20mm, 36mm). This is ...
7
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4answers
2k views

Where can I get an extension tube for micro-four-thirds lenses?

There doesn't seem to be any extension tube set listed on the m4/3 section of the Four Thirds website. Olympus makes the EX-25 extension tube but it's for regular Four Thirds lenses. I would like to ...
6
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3answers
507 views

Kenko extension tubes or no name tubes?

I'm planning to buy extension tubes for my Canon 50mm f1.8 lens. I found Kenko for about $150 but then again there are the others which are going for about $10 or less which does not mention of a ...
4
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3answers
534 views

Can I combine a pinhole bodycap with macro extension tube to adjust focal length?

I'm interested in trying out a bodycap style pinhole on my DSLR (a Nikon D3300 in my case). Can I combine this with a macro extension tube to adjust the focal length? Calculators such as Mr Pinhole ...
4
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2answers
4k views

What macro extensions tubes are compatible with Nikon AF-S?

I am looking for a set of macro extension tubes for a Nikon D40 that will work with the AF-S system (i.e. will send all the relevant stuff between lens and body for full auto operation). I have found ...
3
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1answer
994 views

working distance in macro photography

I have Sigma 70-300mm and tamron 24-70mm lens. I want to capture dragonfly and butterflies. I am thinking to get either close-up lens (Raynox DCR 250) or extension tube (XIT Pro Series). But my ...
2
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1answer
485 views

How much does extending affect range of focusing distances?

It's well known that moving a lens away from imaging surface will decrease both minimum and maximum focusing distance. There are times when it would be good to know how much those distances will ...
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3answers
399 views

What are these two devices both called “macro adapters”?

I came upon a video and in it there was this what he calls a macro adapter: Raynox DCR-250. And then I searched google 'macro adapter' and saw this video and images of the same device in the first ...
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2answers
3k views

What magnification would I get with extension tubes?

I have a Nikon 60mm f/2.8 Micro lens (DX sensor) and I haven't been able to exactly determine what magnification I can get with Kenko 12mm, 20mm, 36mm extension tubes. Suppose I would use all of them ...
1
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1answer
3k views

Do extension tubes enhance magnification on a 105mm macro lens?

I have a Nikon 105mm macro VR lens and I am quite happy with it. This is a true macro and gives me 1:1 magnification. If I put an extension tube with this macro lens, will the image magnification ...