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F-Stop workshop


F-Stop workshop
Photo Information
Copyright: Martin Krawietz (speed34121) Gold Star Critiquer/Gold Note Writer [C: 102 W: 1 N: 80] (764)
Genre: Places
Medium: Color
Date Taken: 2007-02-17
Categories: Nature, Experimental
Camera: Canon EOS 20D, Canon EF 17-40mm 1:4L USM, Rodenstock UV E77
Exposure: f/14.0, 3 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version, Workshop
Theme(s): Citrussy goodness [view contributor(s)]
Date Submitted: 2007-02-17 15:49
Viewed: 716
Points: 7
[Note Guidelines] Photographer's Note
This is my F-Stop workshop.

We make some orange juice with Sabrina (Sign) and we got a idea to make some photos from the oranges. So we have put the oranges on a plate and the camera on the tripod. So we have started to make our session.

Here I have a good picture where I can show you the differences between two different F-Stops (aperture).

This photo have a aperture value of 14. The oranges and lemon are sharp. One problem you get is that you need more light or a tripod, because a bigger aperture value closes the aperture and you need more light.
In my workshop I have posted a photo with a aperture value of 4 and you can see that the lemon and oranges on the background are unsharp.

In our last holidays I have made some mistakes with settings on my camera. We are looking some penguins in Otago Peninsula (Dunedin), I had my Canon 70-200mm F2.8 lens on my camera. The camera was in program mode and this was my mistake: It was in the afternoon and the camera set the aperture to F2.8 because of the darkness and some of my pictures are unsharp in the background or foreground :-(

Next time I will remember to this workshop and I hope I could help you too.
Janice has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
To foureur: jolie compositionspeed34121 1 02-28 15:14
To Sharky: Fruchtiges Motiv!speed34121 1 02-20 13:31
To Janice: That's what I like about the Trek sites we can gspeed34121 1 02-20 13:28
To blzbub: Martin, this is a good effort, the lack of lightspeed34121 1 02-20 13:24
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Critiques [Translate]

Martin, this is a good effort, the lack of light is a problem - I have taken a similar shot and am always experimenting with f-stop etc. You could try setting ISO higher (I see yours was only 100, try 800 or 1600) or manually setting the shutter speed to 6 or 10 seconds. A higher f number increases the depth of focus, a lower f number means that objects nearer than or further away than the main subject will be soft (blurred).
TFS, Neil.

  • Great 
  • Janice Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3270 W: 270 N: 7711] (32868)
  • [2007-02-17 21:32]
  • [+]

Hi Martin, yes, I see what you mean - I'm usually shooting using my AV /F-stop button now. And slowly learning to get the results I want.
In my landscape photo called "School's In at the Beach" Costas said: To get an even softer backgraound (blurred) try shooting with the lens wide open, eg.f4.5 for your lens. I had it on F13, and even though the BG was blurred it could be even more blurred.
And as Neil said, rise the ISO number - in the bush I will often put the ISO number a lot higher so I don't have to use the flash.
That's what I like about the Trek sites we can get help and suggestions from others.
Thank you for your tips too - the oranges look really good here, such bright orange colours.
Janice

  • Great 
  • Sharky (20)
  • [2007-02-18 4:53]
  • [+]

Fruchtiges Motiv! gelungener Workshop und leckere Orangen.

jolie composition , bien présentée
beaux détails
bravo
jojo

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