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50mm Macro Extension Tube Ring for PENTAX

Digg(100) ( 8 Reviews)
US $13.99

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Qty 2-4 5-9 ≥10
Price USD$ 13.57 USD$ 13.43 Wholesale Price >>
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The simplest way to get a better result when taking close-up photos is to attach this brand new macro extension tube ring to your lens on your PK mount. With the three 1, 2, 3 extensions tubes you can achieve up to 8 different combinations of macro ranges. Ideal for professional or amateur photographers who wish to take exceptionally high quality pictures in a wide variety of situations.
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Product Description

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  • Specifications:

    • Brand new and never used
    • Small volume, light weight, easy to carry
    • The structure is simple, the circle is durable
    • It is made of high quality and durable metal material
    • It moves the lens farther from the film or digital sensor
    • Exceptionally useful for macro photography
    • Dramatically convert almost any lens into a macro lens by enabling the lens to focus closer than its normal set minimum focusing distance
    • No optical component in between so it will not downgrade your photo quality
    • This is non-OEM generic product
    • Diameter: 50mm/1.96in


    Jeryerce 50mm Macro Extension Tube Ring for PENTAX

    • Small volume, light weight, easy to carry

    Extension Tube Ring

    • The structure is simple, the circle is durable 

    50mm Macro Extension Tube Ring for PENTA

    •  With the three 1, 2, 3 extensions tubes you can achieve up to 8 different combinations of macro ranges

     Jeryerce 50mm Macro Extension Tube Ring for PENTAX

    • Ideal for professional or amateur photographers who wish to take exceptionally high quality pictures in a wide variety of situations

    Extension Tube Ring

    • Dramatically convert almost any lens into a macro lens by enabling the lens to focus closer than its normal set minimum focusing distance

    What is an Extension tube?

    • An extension tube is an accessory for cameras with interchangeable lenses, used primarily for 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). Lenses classically focus closer than infinity by moving all optical elements farther from the film or sensor; an extension tube simply imposes this movement.
    • Extension tubes without electrical contacts will not allow an electronic automatic camera to control the lens, thus disabling autofocus and in some cases forcing a user to shoot wide open unless the lens offers manual aperture control. More expensive extension tubes contain electrical contacts allowing the user to use autofocus and electronically control the aperture of the attached lens.

    How to Use an Extension Tube?

    • An extension tube for a telescope or other optic acts between the objective lens and the eyepiece of the instrument by spacing and funneling light. Extension tubes affect focus capability by moving the lens within the eyepiece further from the mirror within the telescope.
    • Instructions:
    • Select the object you want to view, such as a galaxy, a specific star or a feature of a certain planet. This will give you an idea of the field of view you need to achieve.
    • Decide on the optical effect you wish to attain via focus, such as enhancing detail on the moon's surface or bringing a distant star into sight.
    • Get some advice from your telescope manufacturer's instruction manual, astronomical literature or through astronomer or optics shop contacts on how much focal extension to shoot for. This will tell you which length of extension tube to select.

    Achieve the Right Tube Effect:

    • Loosen the clamp or thumbscrew that secures the telescope eyepiece.
    • Remove the eyepiece from its mount on the telescope body and set it in a safe place.
    • Insert the extension tube on the telescope accessory mount and tighten the clamp or other locking device.
    • Attach the telescope eyepiece to the free end of the extension tube and secure it with its locking device. Since attachment of eyepieces to extension tubes varies widely by model, it's very important to carefully follow your manufacturer's instructions during this process to avoid damaging the telescope.
    • Experiment and use different tube lengths under different light conditions to discover the right focus for your viewing objective.

    Tips & Warnings:

    • Extension tubes typically come in a range of diameters and lengths. They usually attach at the T-mount site in front of the eyepiece.Trial and error are unavoidable when using extension tubes. Experience will help you determine which length of extension you will need to use in order to achieve the desired focus.Extension tubes are also used with 35mm cameras to enhance the focus for still or macro photography.
    • You can most likely get one specifically designed for your camera though the manufacturer.Metal or plastic extension tubes have no lens components, so they represent an economical investment with a demonstrative effect on astronomical or other viewing.
    • An extension tube is not a magnifier and should not be used in place of an eyepiece.An extension tube provides no "white light" solar protection. You will still need to use a specially made solar filter in order to safely view solar eclipses

    Package Included:

    • 1 x 50mm Macro Extension Tube Ring for PENTAX

Customers' Reviews

  ( 8 Reviews)
Ease Of Use:

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I have bought this product

Alberto Santana

Bought this item on

00:00:00 06-07-2011 Love it Overall:  
  • Other Thoughts: Very great for close-up, I would recommend this product to any who were looking to do this sort of photography.

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John H. Gardner

Bought this item on

00:00:00 05-04-2011 Camera Extension Tube Overall:  
  • Other Thoughts: This was an easy purchase. I was looking for a way to take close up pictures of small items. This item was well described and pictured. I knew it would fit my camera and lens as it was stated in the description. It was shipped quickly and was well packaged. I was very satisfied with the purchase and would recommend it to anyone looking for such an EOS accessory.

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Alexandra Rosa

Bought this item on

00:00:00 04-25-2011 Alternative Overall:  
  • Other Thoughts: This extension tube set was an excellent and in-expensive alternative to a Macro lens. I also very much appreciated Fotodiox's prompt responses to my e-mailed inquires.

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Anderson Chamon

Bought this item on

00:00:00 04-20-2011 wow Overall:  
  • Other Thoughts: at first i was confused on how to use this item but once i got the hang of it im impress, its a must if you are into macro and cant afford a macro lens.

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Keegan Barrett

Bought this item on

00:00:00 04-04-2011 Great ! Nice extra for 4/3 system Overall:  
  • Other Thoughts: It works very well with the Zuiko 40-150mm telezoom. The first day I got some nice photos to flowers and small animals: spiders, butterfly, and so on. And its price was convenient. Tripod/flash highly recommended. <br/>I recommend this EX-25 extension tube for begineers in macro (as I am).

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Kevin Tam

Bought this item on

00:00:00 03-29-2011 Watch Out Overall:  
  • Other Thoughts: I bought this lens as an add-on to my 14-45 Olympus lens. I wanted to get a bit closer on macro shots. Buried in the instructions it warned the user to be careful not to touch the lens on subjects your were shooting. And they were correct! You get within an inch or so of what your shooting so do be careful. And, to make this lens (and you) work at it's best remember a tripod and maybe a remote shutter button. For the price it is a great add-on for macro shooters.

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John Silber

Bought this item on

00:00:00 03-22-2011 solid construction Overall:  
  • Other Thoughts: Made in Japan. Well constructed. Kind of expensive. I guess you get what you pay for.

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leann Evans

Bought this item on

00:00:00 07-14-2009 Great for Macro Overall:  
  • Other Thoughts: These tubes are a nice accessory if you want to take macro pictures. The three sizes lend much versatility for anyone who is interested in taking macro shots. These tubes are great!

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