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Old Aug 12, 2004, 6:25 PM   #1
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I'm looking for a camera for our company. We're thinking something in the 5MB area with maybe 10x optics. Much of the photos taken will be of objects that are 1/8" in size. Does magnification apply to the macro mode of a camera? what kind of minimum focal length is required with a full magnification on these types of cameras? Can anyone advise me towards some cameras to look at.
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Old Aug 12, 2004, 6:37 PM   #2
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To answer your questions on focal length (amount of zoom). The short answer is no. Most cameras will not work at maximum zoom for macros. In fact, most will only work at their wide angle end (with exceptions).

Some questions:

* What type of objects will you be taking photos of (this will impact the lighting and depth of field you will need)?

* What will the photos be used for? If for prints, what size will you need? If for onscreen viewing only, at what viewing size (full screen, half screen, etc.)?

* Will you want the 1/8" Objects to "fill the frame" of these photos as closely as possible?


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Old Aug 12, 2004, 8:27 PM   #3
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The exception: the A1/A2 macro works at both the wide and tele position... but only 7x zoom though
http://konicaminolta.com/products/co...age-a1/02.html

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Old Aug 12, 2004, 8:46 PM   #4
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It depends on how he answers the questions what may work for him.The A2 can only capture a macro area of around2" x 1 1/2" (at the telephoto position which is where it works best for macros). Some lenses only work well at their telephoto end (but most of the consumer models only work at their wide angle end for macros).

If he really needs to "fill the frame" with a 1/8" object, and also needs larger prints, then he'll need to go with another solution (for example,a Nikon Swivel Bodied Coolpix with a closeup lens on it):

http://raynox.co.jp/comparison/digit...995.htm#msn200

If he doesn't need larger prints, then he could simply crop an image for display (and have a much wider choice in cameras).

I doubt he'll need the optical zoom he thinks he does. I suspect that he is assuming that the zoom is neededfor macros.


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Old Aug 12, 2004, 9:00 PM   #5
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Agree... Sometime folks tend to forget that getting their lenses too close for that 1:1 macro that they can't really illuminate it anymore! :?

At the tele position there's at least room for two wireless flashes: http://konicaminolta.com/products/co...e-a1/07_1.html
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Old Aug 12, 2004, 9:18 PM   #6
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It depends on what he's taking pics of. You may want much softer lighting. The Coolpix Models have an optional SL-1 Coolight that attaches to the front of the lens. It illuminates the subject with a ring of white LED's, so you don't get as much glare as you would from a flash.

You also have to look at resolution requirements.

For example: if you had a4 Megapixel Camera that could capture a macro area of 1/2" across; compared to a model that could only capture an area 2" across, then you'd needa 64 Megapixel Camera witha model only able to capture 2" across, to get the same detail in pixels representing the subject as the4 Megapixel model.

Resolution is computed by multiplying width x height. So, if you crop a photo to make it look like you're using twice as much optical zoom, it takes 4 times the resolution to get the same detail in pixels representing the subject.
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