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Old Aug 27, 2005, 9:15 AM   #1
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Folks, with macro photography, I don't seem to get it right especially with extremely tiny subjects. I don't seem to get the sharpness, the picture is soft and... An instance is the picture below. Is my lens the problem or is my way of doing it.

Canon EOS 350D DIGITAL,Program AE,Shutter Speed 1/60, Aperture Value5.0, Evaluative Metering,ISO Speed200, Lens105.0mm, Focal Length105.0mm,
Flash Onwith Flash Exposure Compensation -1, White Balance ModeAuto

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Old Aug 27, 2005, 9:22 AM   #2
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Are you using a macro lens?

That could be your problem.


-- Terry

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Old Aug 27, 2005, 9:42 AM   #3
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Yes, a sigma 105mm F/2.8

Patrick
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Old Aug 27, 2005, 11:58 AM   #4
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My guess is try a higher shutter speed, like 1/125th.
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Old Aug 27, 2005, 3:22 PM   #5
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shutter speed is WAY too low for macro.. at these working distances, your camera shake will be magnified leading to soft pictures.. use a tripod or bump your shutter speeds significantly.. my guess is 1/125 is still going to be a bit slow.. you have to add in the 1.6x crop factor before using 1/focallength so that right there is about 1/160, plus its always good to bump it up a bit on macro's anyways.. shoot for 1/250..
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Old Aug 28, 2005, 11:15 AM   #6
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Thanks Terry and Hards80. I took your advice using the following details.

Canon EOS 350D DIGITAL,Shutter-Priority AE, Tv( Shutter Speed )1/160, Av ( Aperture Value )10.0,Evaluative Metering,ISO Speed800, Lens70.0 - 300.0mm Sigma, Focal Length300.0mmwithflash on.

The picture is not edited in anyway except to reduce the size and add a frame. It is as taken by the camera.

Will you permit me smile for the first time.:-)

Note I avoided the macro lens for the time being. The results are below.

Aumma.

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Old Aug 28, 2005, 1:52 PM   #7
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The image still looks a little soft. Typically, zooms are a little soft at their longest focal length.In addition, going back to Hards post, you would need an equivalent shutter speed of at least 1/500 to minimize camera shake at the longest focal length and adding a tripod would be recommended.
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Old Aug 28, 2005, 2:23 PM   #8
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rjseeney wrote:
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The image still looks a little soft. Typically, zooms are a little soft at their longest focal length.In addition, going back to Hards post, you would need an equivalent shutter speed of at least 1/500 to minimize camera shake at the longest focal length and adding a tripod would be recommended.
Yes, it sounds likethe suggestion for 1/160th second was taken too literally. He suggested that as a minimum forthe 105mm lens.

The rule of thumb for a hand held photos is a shutter speed of 1/focal length or faster.

Your 300mm lens hasa 35mm equivalent focal length of 480mm after the 1.6x crop factor (300mm x 1.6 = 480mm). So, at that focal length, you'd want to be at around 1/500 second or faster.

Keep in mind that this is only a rule of thumb. Some users can hold a camera steadier than others, and some may require even faster shutter speeds.

Also, because a closeup of a flower occupies a greater percentage of your frame compared to most subjects, blur is more obvious.

Your Sigma 105mm is a much better lens. So, I'd use it for Macros if conditions permit.
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Old Aug 28, 2005, 2:38 PM   #9
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yes, i meant 1/160 as an example of a minimum for the 105mm lens.. you will need significantly faster for your 300mm.. as the others have mentioned 1/500 would be a minimum..
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Old Aug 28, 2005, 3:04 PM   #10
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Or, use a tripod if conditions don't permit faster shutter speeds.
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