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Old Aug 17, 2003, 11:26 AM   #1
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Default 28mm (( vs )) 35mm+0.5x lense

I'm comparing the OLY 5050 and Minolta DiMAGE 7Hi.
Minolta is a bit expensive for my budget.

I really like to be able to take WIDE pics. I understand that Minolta offers 28mm v.s. Olympus 35mm. But I see that one can buy a 0.5x wide angel lens for the Olympus....
Here's my question:

Will you have the same width power, using olympus + 0.5x lense .....as 28mm Minolta...How do u compare them?
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Old Aug 17, 2003, 12:07 PM   #2
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The problem you can have with a wide angle converter is the image may be soft, too much fisheye (barrel distortion), and you may have problems with vignetting (if you don't get a good, compatible converter for your camera). Problem is you have to read reviews, a .5x may sound nice but it may be too extreme (I've heard good things about the Raynox .66 pro and the Oly .7x) although they don't give as much wide angle as the .5x (although a better picture is worth more than more wide angle ).

You also should look at convience of having it built in vs. having to carry an extra lens. It all depends on what you want to shoot.

To figure out how much it will give you, just multiply the 'X' factor by the camera's own range...35mm x .5 = 19mm MAXIMUM wide angle...BUT again with many wide angle converters there's vignetting when the camera is set to the widest angle.
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Old Aug 17, 2003, 12:24 PM   #3
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The CP5000/5400 is more similar to the 5050 in feature and cost than the D7Hi, and comes with a 28mm:

http://www.steves-digicams.com/2003_...nikon5400.html
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Old Aug 17, 2003, 8:41 PM   #4
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Thanks to both of u,
Any body knows what the aperture range is and how to tell which one is a better camera?


Aperture range F1.8 - F10

?
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Old Aug 17, 2003, 9:05 PM   #5
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Suggest you do some reading first at http://www.photocourse.com/ (a free online book on the basics of photography).

For the basics, the lower the F number the larger you can open up the lens, which is better in lower light...BUT you also want a large spread, the smaller the number the larger depth of field you can get (the more in focus in front of and behind the subject).
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Old Aug 18, 2003, 6:45 AM   #6
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Quote:
Any body knows what the aperture range is and how to tell which one is a better camera?
... Rather tricky question since unlike film, digicam f-stop doesn't tell you the whole story:

1- Larger f-stop combined with smaller CCD -> less sensititity, ie same as a smaller f-stop camera with slighly larger CCD (which collects more light)... Look for the ISO range and the test pictures as well.

2- Smaller CCD also get you 'infinite' DOF which also negate the effect of larger aperture!

Look @ the digicam as a system and what you get at the output. ie CCD/camera... I personally check for the lens size: More glass usually indicate a larger CCD in the back and more costly optics...
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Old Aug 18, 2003, 1:06 PM   #7
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Quote:
Originally Posted by NHL
1- Larger f-stop combined with smaller CCD -> less sensititity, ie same as a smaller f-stop camera with slighly larger CCD (which collects more light)... Look for the ISO range and the test pictures as well.

2- Smaller CCD also get you 'infinite' DOF which also negate the effect of larger aperture!
But F-stop isn't a fixed size for different camera formats, isn't it a ratio of the lens opening to the size of the frame? For instance, the smallest size of opening on my SLR (F22) is about equal to the largest size of opening on my Oly C-700 (F2.8) since the CCD is that much smaller than a frame of film, so shouldn't the effects be equal at the same F stop?
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