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FORUMS Cameras, Lenses & Accessories Canon Digital Cameras 
Thread started 10 May 2006 (Wednesday) 21:04
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Which Canon dSLR..rebelXT, 20d, 30d

 
Jon
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May 29, 2006 15:12 as a reply to  @ post 1563203 |  #46

CanonConcord wrote:
Crop factor...

If you have a 50 mm lens, it is with a 1.6 crop factor actually an 80mm.

You have to multiply the lens "mm" number by 1.6.

CanonConcord wrote:
Of course the 50mm is always a 50mm and does not change magically into an 85 mm lens.

Someone needs to work on his consistency.

CanonConcord wrote:
Kenny, you are getting all worked up over nothing. For people who do not have your advanced understanding of optics, the distinctions you wish to assert as so important are meaningless and irrelevant.

The reality is that the crop factor does cause a 50mm to behave, in terms of the perceived focal length, like an 80.

Cool your jets guy, you are beginning to make yourself look like a man who forgot to take his meds.

The distinctions, while you may not grasp them, are quite significant. For instance, DoF of a 50 on an APS-C and of an 80 on FF will be different. The "crop factor" comes up altogether too often on here, and we are constantly trying yet again to see that board members get information that is helpful and, most of all, correct. It's not an easy concept to grasp, which is why there's so much misinformation about it, and why it's so important to get it right.


Jon
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bladepurveyor
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May 29, 2006 17:02 as a reply to  @ post 1563187 |  #47

sumozebra wrote:
Hmph. i dunno, i have to agree, your photo's great as it is, unless you're doing it for like a very strict company that wants super high quality photos, then i don't see why u'd need the dslr for photos like these.

I am getting paid for these photo's...so I want the best image I can get...

sumozebra wrote:
DOF won't change even if you get the DSLR...

Well I got it...I bought the Rebel XT

sumozebra wrote:
since the photo will be on white/backgrounds

I plan to use all sorts of back grounds...woods, granite, bamboo...etc

sumozebra wrote:
i'd highly suggest you spend say $100 instead and buy a product light box setup

I made my own light box..and it works great...so I don't need that..the next thing I am going to buy is the bogan/manfrotto 3021Bpro w/ 488RC2 ball head..that is in my budget...

My only other concern was buying the right lense...for this type of work...so far it looks like the 60mm ef-s lense was what was recommend most...:)


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CanonConcord
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May 30, 2006 06:24 as a reply to  @ Jon's post |  #48

Wow, I'm really beginning to wonder about some of the people on this forum. I made myself perfectly clear. Obviously a 50mm lens doesn't become an 80. You are simply confusing neophytes here and once more demonstrating the problem with people who are obsessing over equipment rather than photography.

If it makes you feel better to try to play this kind of game, fine, great, whatever.

I know all about DOF and everything else you are talking about.

The *point* is simply that the vast majority of people out there need a much more simple explanation of the "crop factor" and offering them all kinds of minutiae and technical jargon is not going to help.

But since you regard this as a problem nearly as significant as world hunger, good luck on your noble quest to dispell the clouds of ignorance surrounding this vital issue facing humankind.

:rolleyes:


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Jon
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May 30, 2006 10:30 |  #49

What part of

CanonConcord wrote:
Crop factor...

If you have a 50 mm lens, it is with a 1.6 crop factor actually an 80mm.

You have to multiply the lens "mm" number by 1.6.

didn't you say, then? Seems pretty clear to me that you said a 50 on a crop body is an 80. We get many, many questions on here from people who think that because their EF-S lenses are "designed for the 350D" that they're somehow going to behave differently than the same focal length EF lens on their 350D. Posts like yours only perpetuate this confusion.

Since you made that post 14 hours after OP said

bladepurveyor wrote:
Jon,
Thank you ....I wasn't too sure on that, this new cra^hop factor is all new to me .....now I fully understand...

in response to my explanation, I fail to see what increase in clarity you thought you were offering.


Jon
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AmericanFirst
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Jun 02, 2006 20:13 |  #50

Look... take a piece of 8.5" x 11" paper.

Draw a picture on it from end to end.

Now... cut a 2" border in from each edge all the way around it.

What you have left is about 1.6x crop. That's effectively what happens to your focal length when you take a standard lens and put it on a 300D, 350D XT, 20D or 30D. You "ZOOM IN" that much more.

What? Do I have to draw a picture for you? LOL :D Just frame through the viewfinder... WYSIWYG! At minimum zoom... and it still does not fit... MANUAL ZOOM -> take another two steps back... repeat as necessary.

Welcome to the world of DCF (digital cropping factor) photography.


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NoLight
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Jun 02, 2006 20:18 |  #51

Hey Blade where can I pick up one of the knives in your first picture? By the way Welcome!!!




  
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bladepurveyor
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Jun 02, 2006 21:50 as a reply to  @ NoLight's post |  #52

NoLight wrote:
Hey Blade where can I pick up one of the knives in your first picture? By the way Welcome!!!

NoLight thanks for the Welcome..:D The Knife was made by Jim Siska, Pm me for details about the maker.


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Which Canon dSLR..rebelXT, 20d, 30d
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