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Senior Member
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Join Date: Jul 2008
Location: Kolossi, Cyprus
Posts: 1,554
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Focal Length Comparisons
there have been occasional posts on this site asking the difference between focal lengths of different lenses.
this site http://images.blw.net/blw/focal_lengths/ give a very simple illustrated demonstration of different lenses all taken for the exact same position. I hope it helps.
this site http://images.blw.net/blw/focal_lengths/ give a very simple illustrated demonstration of different lenses all taken for the exact same position. I hope it helps.
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Member
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Join Date: Oct 2008
Location: Lancashire
Posts: 59
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Anyway,back to the topic, is this bit they refer to when saying a cropped sensor has a ratio of 1.6:1 (Canon) or 1.5:1 (Nikon) or am I off track here.
Therefore my 70-300 is really a 112-480 when compared to a full frame sensor???.
Or is there yet more jargon to confuse me to look forward to.
Therefore my 70-300 is really a 112-480 when compared to a full frame sensor???.
Or is there yet more jargon to confuse me to look forward to.
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Kit 1 Canon EOS 450 D EF-S 18-55mm f3.5-5.6 IS EF 70-300mm f4-5.6 IS USM Sigma 10-20mm f4-5.6 EX DC Sigma 70mm F2.8 EX DG Macro Canon Speedlite 430EXII BG-E5 Battery grip Slik D5 tripod (old but good) |
Other Kit View my profile to see my other kit! |
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My Compact/P&S: Minolta Di-mage F100 |
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Senior Member
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Join Date: Jul 2008
Location: Kolossi, Cyprus
Posts: 1,554
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Quote:
Originally Posted by hillmouse
Anyway,back to the topic, is this bit they refer to when saying a cropped sensor has a ratio of 1.6:1 (Canon) or 1.5:1 (Nikon) or am I off track here.
Therefore my 70-300 is really a 112-480 when compared to a full frame sensor???.
Or is there yet more jargon to confuse me to look forward to.
Therefore my 70-300 is really a 112-480 when compared to a full frame sensor???.
Or is there yet more jargon to confuse me to look forward to.
This ORIGINAL thread was about the different magnifications of various lenses from a fixed point.
Crop factor has been explained in a great thread from KK here: http://www.yophotographer.com/page.p...sor+crop+sizes
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Member
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Join Date: Oct 2008
Location: Lancashire
Posts: 59
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Aaaaaaaargh!!!
It took me three days to switch the flaming thing on.
Sometimes people think too much. Just go out and take some photos.
It's more fun than maths and physics.
It took me three days to switch the flaming thing on.
Sometimes people think too much. Just go out and take some photos.
It's more fun than maths and physics.
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Kit 1 Canon EOS 450 D EF-S 18-55mm f3.5-5.6 IS EF 70-300mm f4-5.6 IS USM Sigma 10-20mm f4-5.6 EX DC Sigma 70mm F2.8 EX DG Macro Canon Speedlite 430EXII BG-E5 Battery grip Slik D5 tripod (old but good) |
Other Kit View my profile to see my other kit! |
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My Compact/P&S: Minolta Di-mage F100 |
 Admin Team
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Join Date: Sep 2007
Location: South Wales, UK
Posts: 15,385
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/off-topic posts moved to chat room/
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Kit 1 Nikon D300 Nikon 55-200mm VR |
Kit 2 Nikon D40 Nikon 18-55mm |
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My Compact/P&S: Panasonic Lumix TZ7 |
 Senior Member
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Join Date: Sep 2007
Location: UK
Posts: 1,880
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This is the one i use...
http://lens-reviews.com/Lenses/Canon...-f1.8-USM.html
You need to click on "field of view with this lens" on the tabs to bring up a picture and you can switch between cameras with that lens to give you the different field of views
http://lens-reviews.com/Lenses/Canon...-f1.8-USM.html
You need to click on "field of view with this lens" on the tabs to bring up a picture and you can switch between cameras with that lens to give you the different field of views
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Senior Member
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Join Date: Mar 2008
Location: uk/usa
Posts: 10,146
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