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Thread started 06 Feb 2007 (Tuesday) 15:45
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1.6X crop camera? What does it mean?

 
Ferco
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Hi have read this in some magazines; about 1.6X crop cameras? Now what exactly is this? Was reading this: http://www.kenrockwell​.com/canon/1-6x.htmexternal link

And from what I can gather- on a 35mm camera you get more focal length... or is it the other way around... So does this affect me really; if I have a canon 350D and the bigma- 500mm... Is this 500mm or is what I see bigger than 500mm

I'm just curious...

Feb 06, 2007 15:45

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foty89
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You multiply the focal length of the lens by 1.6 to get the effective focal length of the lens when used with a crop camera, such as the Rebel XT/350. The Bigma is effectively 80-800.

Feb 06, 2007 15:51

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CyberDyneSystems
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It's explained in Both the EOS FAQ and the EF Lens FAQ.

Feb 06, 2007 15:54

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BrandonSi
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on 35mm film the portion that gets exposed is ~ 24mm x 36mm, and 35mm lenses are designed to create this size of an image on the surface of the film. On a 1.6 crop camera,
(like your 350D), the sensor size is ~15mm x 22mm, which means the same 35mm lens produces an image that is too big for the 1.6x sensor, and that sensor only gets the middle of the actual 35mm frame.. or that the image on your 350D is magnified 1.6x what it would be on the 35mm frame.

You don't technically get more focal length, you get a narrower field of view.

I found this picture a while ago, maybe it will help..

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Feb 06, 2007 15:59

[ wwwexternal link· 365external link · flickrexternal link]

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Choderboy
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It's really surprising that you have meade over 2000 posts , have been a forum member for over 1 year and ask this question.
It's so surprising, I wondered if somebody is playing a joke on you (left your brwoser open while using PC at work?)

If this is not the case , I apologise. I just suspected this MIGHT be a troll.

This would have to be the most hotly debated , most often asked , etc etc topic on these forums. There are lots of stickies.

Anyway , if it was an honest question you'll have no problems finding hundreds (thousands) of posts on these forums.

Feb 06, 2007 16:00 as a reply to foty89's post 9 minutes earlier.

Dave
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samsen
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Choderboy; The only stupid question is the one that one has and doesn't ask.

Feb 06, 2007 16:30

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SkipD
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Check out this link for a description of the "crop factor" and what it means.

Feb 06, 2007 16:39

Skip Douglas
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Lord_Malone
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Choderboy wrote in post #2666011external link
It's really surprising that you have meade over 2000 posts , have been a forum member for over 1 year and ask this question.
It's so surprising, I wondered if somebody is playing a joke on you (left your brwoser open while using PC at work?)

If this is not the case , I apologise. I just suspected this MIGHT be a troll.

This would have to be the most hotly debated , most often asked , etc etc topic on these forums. There are lots of stickies.

Anyway , if it was an honest question you'll have no problems finding hundreds (thousands) of posts on these forums.

Give the kid a break, Dave. ;)

He's 15 years old and most of his post have been comments on other people's work. He asks alot of questions, but doesn't contribute any answers. We need to nuture and develop his young mind. And I don't suspect he's trolling or trying to stir things up (like me). ;)

Feb 06, 2007 20:23

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exsubmariner
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Choderboy wrote in post #2666011external link
It's really surprising that you have meade over 2000 posts , have been a forum member for over 1 year and ask this question.
It's so surprising, I wondered if somebody is playing a joke on you (left your brwoser open while using PC at work?)

If this is not the case , I apologise. I just suspected this MIGHT be a troll.

This would have to be the most hotly debated , most often asked , etc etc topic on these forums. There are lots of stickies.

Anyway , if it was an honest question you'll have no problems finding hundreds (thousands) of posts on these forums.


I just joined this site. Thankfully the nature of your post seems to be in the minority. I hope in the intervening six years you have learned some wisdom and that the object of your scorn has learned to disregard ill-informed, self-centred bludgers.

Jul 14, 2013 14:52



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mwsilver
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exsubmariner wrote in post #16119818external link
I just joined this site. Thankfully the nature of your post seems to be in the minority. I hope in the intervening six years you have learned some wisdom and that the object of your scorn has learned to disregard ill-informed, self-centred bludgers.

This is your first post and you use it to dredge up a thread that been dead for six and a half years and then proceed to admonish one of the members of this forum because you didn't like the tone of his message in early 2007? In this whole huge forum that was the most pressing thing for you to comment on? I'm sure you can do better than that.

Jul 14, 2013 19:27

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Max ­ Headroom
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Ferco,
The link that Skip Douglas provided explains it really well in my view.

Jul 14, 2013 19:34



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krb
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Max and David, look at the date of the post you are responding to...

Jul 14, 2013 19:59

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John ­ from ­ PA
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Sometimes a picture is worth a thousand words.

Go to http://lens-reviews.com ...w-visualisation-tool.htmlexternal link. Along the bottom left edge you will see a series of crop factors rangeing from "Full frame" to 2X crop. As you click across you will see the frame on the picture vary showing you what you will get with the selected crop factor.

You should be aware of the effect on field of view with the crop factor of your camera. When you see that great magazine photo taken with a 50mm lens on a 5DMkIII for instance, don't necessarily run out to buy the same lens if you own a 60D because the field of view will be equivalent to 80mm. You need to buy something in the ballpark of 30mm to capture the same subject as shown in the magazine field of view.

Jul 15, 2013 09:34



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TeamSpeed
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Can't we just let this 6+ year old topic die?

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Jul 15, 2013 09:50

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1.6X crop camera? What does it mean?
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