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Tubes and DOF


Tubes and DOF
Photo Information
Copyright: Gerhard Theron (gerhardt) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1976 W: 259 N: 4103] (11585)
Genre: Animals
Medium: Color
Date Taken: 2004-11-03
Categories: Insects
Camera: Canon EOS 300D, Tamron AF70-300mm LD, Digital ISO 100, Kenko Extension tubes (68mm)
Exposure: f/11, 8 seconds
Details: Tripod: Yes (Fill) Flash: Yes
Photo Version: Original Version
Theme(s): Things in and around my house. [view contributor(s)]
Date Submitted: 2004-11-04 5:19
Viewed: 1788
Favorites: 1 [view]
Points: 24
[Note Guidelines] Photographer's Note
Area 51 – Very limited DOF

Today’s post is not about the ID of this moth. I have found that the insect books mostly ID the brightly colored ones or those with distinguishing markings.

I wanted to show you the magnification effects of the extension tubes. The photo posted here was taken with the 36mm extension tube. The inset shows the actual size of this very small moth (compared with matchstick). I chose the smallest moth I could find to see what details would be shown upon magnification. I was quite impressed with it.

The large post shows the same moth magnified to the largest I could possible go. I used all the extension rings (68mm) on it. The actual size inset is in front of the front leg. The leg is thicker than the actual moth. This moth is about 2mm wide. You will notice that the DOF with the 68mm rings this close is smaller than that.

PLEASE CLICK FOR LARGE VERSION

The technical data are as follows:

For the original (36mm)
Digital ISO 100, 8 sec shutter speed, F11, focal length 104mm, flash and tripod used.

For the large view (68mm)
Digital ISO 100, 20 sec shutter speed, F16, focal length 124mm, flash and tripod used.

I did not know that these rings could get this enlargement and have reasonable details.

Please excuse if the moth is not colorful or nice to look at. And if the notes are boring, it was an experiment I wanted to share with those that find it interesting or could learn something of photography.
RAP, mrvdm1, ellis49, Fisher, marhowie, AndyB, PDP, red45, Crypton, willie, Signal-Womb has marked this note useful
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Critiques [Translate]

  • Great 
  • RAP Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2524 W: 345 N: 2373] (7405)
  • [2004-11-04 5:36]

Desde una excelente nota explicativa a una doble presentacion con version LP incluida y la comparativa con al cabeza del fosforo.
Buena agudeza con excelente presentacion para esta polilla tan extraña.
Muy buen resultado de este experimento como tú lo has denominado.

From an excellent explanatory note to one it doubles image with version LP including and comparative with a the head of phosphorus.
Good sharpness with excellent presentation for this moth so strange.
Very good result of this experiment as you have denominated it.

When are you publishing your book?? I'm sure it would sell. Great work, thanks for the detail, this is why TN is my homepage.

Very good Gerhard.
The LP version is very good sharpness with details.
You did a very good experiment.
One thing, when you use the whole set of rings, it steels alot of light, but you use a tripod and a flash so it's not a
problem for you.
Well done.

Nice details in this project. You even managed to just get the pupil of the eye.
Well done.

Mike

Gerhard, Thanx much for the time you put into this. I've learned a great deal here at TN & this is a prime example of why!! I'm going to copy for future reference. Thanx again!

  • Great 
  • japie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1814 W: 100 N: 1904] (5187)
  • [2004-11-04 8:44]

This is incredible! Knowing how small these moths are I simply cannot believe that you managed to capture this. The detail and sharpness is amazing.

Congratulations on the excelent result.

  • Great 
  • AndyB Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1391 W: 32 N: 1350] (3982)
  • [2004-11-04 10:13]

Amazing detail here on something so tiny!
Great work and a very informative note too.
Well done.

  • Great 
  • PDP Gold Star Critiquer/Gold Star Workshop Editor [C: 2821 W: 344 N: 3779] (11769)
  • [2004-11-04 10:30]

Very nice work Gerhard and instructive too, especially for those of us that one day might take the SLR plunge. Good work.

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2705 W: 74 N: 8864] (30243)
  • [2004-11-04 10:35]

Nobody needs a microscope then :-) Excellent level of details on this tiny creature.

la version large est vraiment splendide, avec une multitude de details.
nice done

  • Great 
  • willie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1023 W: 61 N: 648] (2083)
  • [2004-11-04 14:39]

Gerhardt, this is amazing detail foir such a small insect.
Very well done.

That is a very nice setup Gerhard that gets you this close. The detail is amazing almost like a microscope! Super shot and very interesting post.

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