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Getting a new lens

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  1. #1
    Realist's Avatar
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    Talking Getting a new lens

    I just bought a new camera on ebay for $50.00 US. It will go on my Chinon CM-4s manual film camera. What are your oppinions on this lens? I know a lot about telescopes, so I was excited by the SD glass and multi-coatings. This would be a good size lens for me.

    Tokina 28-70mm Pentax K-Mount Lens - SD Glass
    High performance in a compact lens that zooms from wide angle to short telephoto. When introduced, this was the world's smallest zoom lens in its class, measuring only 2.6 in. long and weighing only 11.5 ounces.

    Conventionally, used for color compensation in long telephoto lenses, SD (Super-low Dispersion) glass finds a new application by offering better color compensation and a more compact lens.

    This two touch lens is a true zoom or parfocal, which allows zooming without having to refocus. Also, the focusing and aperture rings of this lens rotate in the same direction as the Original Equipment Lenses.

    This is new stock. We originally sold this model for $199.95. Comes with front and rear lens caps, instruction manual and one year warranty card in box.

    SPECIFICATIONS

    Focal Length/Maximum Aperture: 28-70mm F/3.5-4.5.

    Minimum Aperture: F/22

    Optical Construction: 10 elements - 9 groups

    Lens Coating: Multilayer

    Angle of View: 75º20'~34º20'

    Min. Focusing Distance: 0.7m (2.3 ft)

    Min. Focusing Dist/Macro Mode: 0.32m (1.1ft)

    Macro Reproduction Ratio: 1:4

    Zooming system: Dual Ring (Two Touch)

    Mount Type: Fixed

    Filter size: 52mm

    Max. Diameter: 64mm (2.5 in)

    Length: 64.7mm (2.6 in)

    Weight: 325g (11.5 oz)

    Lens Hood: Clip-on Type (SH522)



  2. #2
    tegan is offline Senior Member
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    Tokina are certainly good lenses, but for 28mm in a fixed or a zoom, I want f2.8. F3.5 is not fast enough.

    Tegan

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    Realist,

    Maybe in the future you'll want the faster lens and spend the bucks but for a quick $50. it's hard to go wrong. (if the pics are sharp). Personally I think it's a good deal and I'd LOVE to see a few more pics.

    Thanks!

    Marko
    Last edited by Marko; 04-02-2007 at 01:08 AM.

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    Realist's Avatar
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    Quote Originally Posted by marko
    Realist,

    Maybe in the future you'll want the faster lens and spend the bucks but for a quick $50. it's hard to go wrong. (if the pics are sharp). Personally I think it's a good deal and I'd LOVE to see a few more pics.

    Thanks!

    Marko
    Does a faster lens give you a wider field of view? Because this is the Focal ratio were talking about right. I will take lot's of pics. These one's are going to be experimental since I am new and am trying different types of shot out.

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    tegan is offline Senior Member
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    Default Faster lens

    Quote Originally Posted by Realist
    Does a faster lens give you a wider field of view? Because this is the Focal ratio were talking about right. I will take lot's of pics. These one's are going to be experimental since I am new and am trying different types of shot out.
    A faster lens does not give you a wider field of view, but it allows you to take photos in lower light conditions. A 28mm lens gives you a good field of view without the distortion inherent in some wider angle lenses.

    This means that at sunset for example you can use a fast wide angle without a tripod and still get a sharp photo. Misty lake scenes at sunrise are also possible. It also gives you more flexibility in shooting narrow streets in some historic cities at nightfall.

    Tegan

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    Realist's Avatar
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    thanks for the explanation tegan. I just started shooting with it, and will probably shoot another roll tommorrow. I'll have them developed by the end of the week. Be sure to post some of them.

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