Shenzhen T-Lin Decoration Co., Ltd >> Auto Focus Macro Extension Tube for Canon EOS Ef Ef-S (Red)

Auto Focus Macro Extension Tube for Canon EOS Ef Ef-S (Red)

Auto Focus Macro Extension Tube for Canon EOS Ef Ef-S (Red)
Price: Negotiable/Piece
Trade Terms: FOB,EXW
Min Order: 15/Piece
Pay Type: T/T,Western Union
Prod Model: HSS-C01
Markets: North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Compatible Brand: Canon
Tripods Type: Professional Tripod
Lens Type: Zoom Lens
Camera Lens Hood Type: Cylindrical
Type: Macro Extension Tube
Camera Filters Type: All Kinds

Product Description

For more information and detailed picture,please visit our website: www.hansonstec.com
Any needed,please feel free to contact me.Thank you.


Tube diameter:ab.62mm
Tube Lenghts:(1)13mm  (2)21mm  (3)31mm
Image Magnification Ratios And Exposure Factors(50MM Standard Lens)

*The above table shows general values for 50mm standard lenses.Even with standard lenses individual lenses may have actual values slightly different from these.

*Image Magnification Ratio is the ratio in size(lenghts) between the subject and the image formed on 
the film surface.For example,image Magnification Ration 0.24X means that a 1cm subject becomes 
1X0.24=0.24 or makes a picuture of 0.24cm size on the film surface.

*When using an extension tube of same length,the image magnification ratio becomes smaller as the 
focal lekgth of master lens becomes loger and the larger as the focal length becomes further awa as 
the focal length of master lens becomes longer and closer when it becomes shorter.

*For other than standard lenses calculate according to the following formulas:

                                           Length of Extens.Master Lens Tube+Advance Volume
Image Magnification Ratio=---------------------------
                                                              Master Lens Focal Length

Exposure Factor=(1+Image MagnificationRatios)²


                                                                  (Master Lens Focal Length)²
Master Lens Advance Volume= ----------------------------

                                               Master lens Distance Reading-Master Lens Focal Length


                          Image Size on Film Surface
Field Coverage=---------------
                           Image Magnification Ratio



Shenzhen T-Lin T Decroation Co., Ltd iS specializes in interior decoration and sales of high-grade materials and decorations, etc., years of credit management let us won a good reputation in the industry.

Shenzhen T-Lin T Decroation Co., Ltd will initiate the second phase of our development strategy. Our company regards "reasonable prices, efficient production time and good after-sales service" as our tenet. We hope to cooperate with more customers for mutual development and benefits. We welcome potential buyers to contact us.

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