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 Post subject: Cornflower question
PostPosted: Fri Jan 06, 2012 4:52 pm 
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Location: Over there ------->>
Was looking through this thread and came across Jayman69's Cornflower on Tue Sep 01, 2009 5:25 pm

Jayman69 wrote:
Nice pics people love the colours in some of them. Here is one from my garden.

Image
Flower 01 by Jayman6972, on Flickr



And it inspired me to dig out one I took last year and had forgotten about.

Image
Cornflower by SUNR15E, on Flickr

Looking at the two pick side by side I can clearly see the benefit of the 38mm lens. It really sharpened the detail in the flower itself. I was looking specifically at the bee at the time. I allowed the camera to pick all the settings. Apart from swapping the lens what other settings would people say could I have changed to sharpen the image specifically on the petals of the flower.

Would I be correct in thinking some of the lose in definition is due to the fact that I was stood further away and zoomed in to get the picture I wanted. How much sharper would the picture have been at maybe 50mm with me closer.? (that's going to be my next project.) I am realizing I have a lot to learn.

How much of a difference does my iso500 make to this...Jayman6972 was set to iso200

I know each factor contributes to the final picture and will be taking lots of the same pictures at different setting to answer my own questions but a clue from the dedicated knowledgeable would help me understand what I am seeing.

Thanks for any input you have on this one. I know I understand a lot of what I am seeing but it opens up a massive string of questions so anything people have to add/offer will maybe answer questions I have not actually asked...

SUNR15E

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D300s - MB-D10 - 18-200mm f3.5-5.6 - 50 mm f1.8 - 360AFD - bottle of water - and a kebab... ;)


Find me SUNR15E, on Flickr.

Or find me on facebook SUNR15E PHOTOGRAPHIC



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 Post subject:
PostPosted: Sat Jan 07, 2012 4:56 pm 
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Location: bit east of Melbourne
your shutterspeed is quite high, you could have reduced your iso. A reasonable shutter speed is required to freeze the moment, but its not why the flower is not all in focus.

the reason its not all in focus is that you are using a your lens at 200 and with aperture of 5.6 your dof is very small. At a guess if you had used aperture of f10 the whole flower would have been in focus.

put your data into this calculator
http://www.dofmaster.com/dofjs.html



the other picure is at a shorter focal length and smaller aperture, there is many times larger dof there.

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Canon Powershot S95, Canon 6D,7D, Canon 40 2.8 STM, Tamron 24-70 2.8 VC, Canon 17-40 L, Canon 15-85, Canon 85 1.8, Sigma 30 1.4, 50mm 1.8, Canon 100 2.8L Macro, Canon 70-300L +Kenko 1.4 Pro 300DGX, Canon 430EX II and RS 4 Classic


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 Post subject:
PostPosted: Sun Jan 08, 2012 12:30 am 
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Joined: Wed Dec 14, 2011 9:54 pm
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Location: Over there ------->>
Thanks maxjj that makes sense and I like the link. I will make use of that.

SUNR15E

_________________
D300s - MB-D10 - 18-200mm f3.5-5.6 - 50 mm f1.8 - 360AFD - bottle of water - and a kebab... ;)


Find me SUNR15E, on Flickr.

Or find me on facebook SUNR15E PHOTOGRAPHIC



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