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#1 |
Regular Crew
Join Date: Aug 2006
Location: London,UK
Posts: 64
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Wide Angle Info
Looking for some info on wide angle lenses for the Z1. They always have a figure included, ie '0.8x' or '0.7x'? What does that mean and should i be looking for a higher number as the best option?
Also, a friend lent me a wide angle manufactured by Zunow which, when at its widest, had a lot of picture out of focus at the edges. Zunow is not a name that comes up a lot in my searches and was wondering if it might be a poor lens choice? Neil |
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#2 |
Major Player
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Hiya, well your questioned have been answered many times before on here.
Basically a .7 is wider than a .8 - the lower the number the wider the adaptor will be. Seems to me the Zunow lens has already proved itself as a POS, buy something that actually works. Search this forum for recommendations. Personally I have the Sony .8, the Optex gave too much flare. |
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#3 |
Regular Crew
Join Date: May 2007
Location: Sydney, Australia
Posts: 29
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It depends on how wide you want your image.
0.7, 0.8 refers to scales of wideness. ( I have no idea how it relates to camera lenses) anything below .66 will end up distorting straight lines. 0.3 gives you a 180 degree field of view, probably around 8-10mm in photography terms. Depending on your budget, have a look at Raynox lenses. They're reasonably affordable and have excellent clarity if used at full wide. Zoom through isnt too spectacular so it depends on your context. If you want a really wide lens, a Century Optics 0.3 would be the go, but its only for very specific purposes that you would even consider owning one.
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Liquid Productions |
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#4 | |
Wrangler
Join Date: Dec 2002
Location: Mays Landing, NJ
Posts: 11,790
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Quote:
The numbers like 0.7x and 0.8x are actually very easy to understand and relate to focal lengths if you have the specs on your camera's built-in lens. They mean exactly what they say; with a 0.7x adaptor you would multiply the focal length of your camera's built-in lens times 0.7. Camcorders have zoom lenses, so obviously the zoom setting affects the focal length. On your Z1 if you zoom full wide the actual focal length will be 4.5mm which is the equivalent of a 32.5mm lens on a 35mm SLR camera (you will find this info in the specifications section at the back of your Z1 manual). So if you add a .7x wide adaptor then the 35mm SLR equivalent would be: .7 x 32.5 = 22.75mm You can do the math yourself to compare the effects of other adaptor lenses. We've discussed adaptor lenses for the Z1 here in the past - see the following: http://www.dvinfo.net/conf/showthread.php?t=77240 http://www.dvinfo.net/conf/showthread.php?t=67014 http://www.dvinfo.net/conf/showthread.php?t=58525 |
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#5 | |
Sponsor: Schneider Optics
Join Date: Aug 2007
Location: Van Nuys, CA
Posts: 387
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Quote:
http://www.schneideroptics.com/centu...x1/hdr-fx1.htm A .7x is 30% wider and a .8x is 20% wider than you existing lens. The formula for 35mm equivalents is dependent on the size of the CCDs used in the camera. Ryan Avery Regional Sales Representative Schneider Optics |
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