Back Modifications (2)
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By JoanMcC
I need some help. Trying to take pictures of butterflies but failing to get the whole thing sharp. I have Nikon D50 with Sigma 18 -200. I have tried large F number which slower shutter but wing keep moving. When i reduce F number to get faster shutter the wing tips loose sharpness. This subject was about 1.5m away with the the lens at 200mm taken on a bright day but slight cloud cover.

Tags: Flowers and plants Wildlife and nature Butterfly yellow white purple green


frz67 11 10 32 Italy
14 Jun 2010 11:30AM
I'm sorry, can't help you as per the technical question (I ve a Canon...).
You can increase the sharpness in post production. I normally use a high pass filter in PS3.
In the mod uploaded, the high pass filter was applied only to the butterfly and on the flower, leaving the rest untouched.
I've also cropped the picture, to have the subject in the lower left corner (just personal taste...)
hope it helps
excellent capture, lovely presentation, still liked the original best, well done!
JoanMcC 11 1 Scotland
14 Jun 2010 12:44PM
thanks very much. like the crops. focus is drawn more to the butterfly.
paulbroad 13 131 1290 United Kingdom
15 Jun 2010 7:56AM
Not a bad image as persented. No shutter speed or apertures given. You are entering a difficult area of the hobby.

You need an aperture to get the required depth of field. You then need to focus critically and ensure the shutter speed is high enough to prevent any camera shake. At least 1/500 here. Use hgiher ISO to get 1/500 @ f11 for example. Some grain is better than blur.

Remember, a 200mm gets you closer, but magnifies not just image size, but you shaking. Some kind of support is adviseable, a tripod, but these are not good for portability, or, much better, a monopod. I wouldn't try what you are doing without a monopod, even with image stabilisation. (Decent monopod with ball head, about 40)

Flash can help a lot. I do a lot of macro, and a ringflash is a great asset. Unfortunately they cost a lot, which leads me on to the last point - if you are serious about close up/macro you will need a macro lens. Many zooms are advertised as 'Macro'. They are not. Macro is 1:1. Those zooms are for close up, not macro and are not really at there best when close anyway.

If you decide to save up for a macro lens, go for 90 to 105 mm - the Sigma is the best value and a superb performer. They also have wide maximum apertures, helping depth control and clear viewing.


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