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| General photography questions and answers Discuss Zoom and focal length...Hi I just bought me a Panasonic Lumix DMC-FZ18. As you may know, the FZ18 has an 18 times optical ... |
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#1 (permalink) |
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New here
Join Date: Dec 2007
Posts: 11
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Zoom and focal length
Hi
I just bought me a Panasonic Lumix DMC-FZ18. As you may know, the FZ18 has an 18 times optical zoom. According to what I've read this translates to an equivalent of 28-504mm on a 35mm camera. My question is this: With no zoom applied I'm taking wide angle shots (28mm) and what I'd like to know is how to set the zoom to 50mm prime/natural setting. (When applying zoom the readout indicates as follows: 1x zoom: 0.04ft - infinity, 2x zoom: 0.5ft - infinity etc - Don't know if this is relevant). So how would I know what zoom factor gives me the equivalent of a 50mm prime lens? |
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#2 (permalink) |
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Feet under the table
Join Date: Jan 2005
Location: Silkstone Common, Yorkshire, UK
Posts: 3,754
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Re: Zoom and focal length
Hello Ben and welcome to Pixalo.
Many compacts aren't very helpful with the zoom settings, but assuming 1x zoom is maximum w/a (28mm equivalent) then 2x should be 56mm which is near enough a natural perspective. There's nothing sacrosanct about the 50mm value, and some people reckon that a slightly longer focal length is nearer the mark. Look forward to seeing some of your photos. ![]() |
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#3 (permalink) |
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Pixalo Crew
Join Date: Jul 2005
Posts: 6,844
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Re: Zoom and focal length
Hi Ben and welcome to Pixalo. Looking at this mathematically your lens has a range of 476mm which divided by 18 gives approximately 26mm per each 1x zoom. Therefore, 50mm is about 2x zoom on your camera.
By the way - don't bring prime into the equation. You can't compare the quality of a 50mm prime lens with 50mm on an 18x zoom lens. HTH. |
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#4 (permalink) |
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New here
Join Date: Dec 2007
Posts: 11
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Re: Zoom and focal length
Thanks for that. It's rather obvious I suppose when you think about it.
After a pretty good browse round these forums I wish I'd have found it before. It's a great resource. Happy new year to you all. |
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