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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 24 Aug 2007 (Friday) 15:48
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20D and 70-200 f2.8 IS -- A Good Match?

 
Bill ­ Aanestad
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Location: Southern California
     
Aug 24, 2007 15:48 |  #1

I'm an amateur shutterbug getting quite a bit more serious about this hobby of photography. Well ... I'm also confused by what a sales rep told me when I wanted to purchase the Canon 70-200 f2.8 IS lens online. Namely that on a 20D camera the lens would act like a f4.5 and have cropped fields do to the 1.6 factor of the camera. He wanted to put me into a "new" Sigma 70-200 f2.8 that would remain a f2.8 with no cropping on the 20D. He said the lens was different fom the Sigma 70-200 lenses offered by many other sources for less than $900.00. His list price for the recommended Sigma lens was $1999.00 ... but, of course he had a sale price today for $1550 ... including a UV filter and a polaroid filter.

Please set me straight. I want the best final result. Thanks for your input!




  
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mellowd
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Aug 24, 2007 15:49 |  #2

Rip off! Lies are spilling from his mouth


5D : 17-40L : 85 f1.8 : 135L f2.0L - Full Gear List Here!
flickr (external link)

  
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photoroebucks
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Location: seattle
     
Aug 24, 2007 15:54 as a reply to  @ mellowd's post |  #3

He must have been amatuer
that was s..t spilling from him
stick with canon lenses and avoid nasty brands like sigma and tamron!


greg roebuck.com
1D3, 5D3, 70-200 2.8 is ii,16-35 2.8 ,24 1.4 ii ,50 1.2,85 1.2 ii,135 2.0, 300 2.8is, hasselblad stuff, Profoto stuff, some other stuff, I sure do like stuff

  
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nhbeast
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Location: Ansonia, CT
     
Aug 24, 2007 15:55 |  #4

The 70-200mm f/2.8 will act like a 112mm-320mm f/2.8
on the 20D body. Not f4.5......Blasphemer!

The Sigma would act exactly the same way. 1.6x crop is a 1.6x crop. ;)


-Gregg
===============
7D /50D/Canon 24-70 2.8L / 70-200 2.8L /300mm f/4/ Kenko 1.4x extender/ Tamron 17-50 2.8 Gallery (external link)

  
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Madweasel
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Aug 24, 2007 15:56 |  #5

The man's a cad, and no mistake. The 70-200 f/2.8L IS is f/2.8 whatever camera you put it on. If you're used to 35mm film cameras then it will give you the field of view you would expect from (roughly) a 100-300mm lens, but it will still be f/2.8. If you've only ever known APS-C digital, then forget that bit. Either way, it's the better lens, and will work admirably with your 20D.


Mark.

  
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davesrose
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Aug 24, 2007 15:58 as a reply to  @ mellowd's post |  #6

Who are you trying to buy from??? He obviously was selling you an overpriced Sigma. Completely wrong that aperture changes with the size of sensor. Why would the name brand Canon not keep 2.8 aperture, and not the 3rd party Sigma?:rolleyes: The lens doesn't have crop marks either. All the 20D does is crop in the image more then a FF (5D or 1Ds) or 1.3x crop (1D). Consider buying from B&H Photo.


Canon 5D mk IV
EF 135mm 2.0L, EF 70-200mm 2.8L IS II, EF 24-70 2.8L II, EF 50mm 1.4, EF 100mm 2.8L Macro, EF 16-35mm 4L IS, Sigma 150-600mm C, 580EX, 600EX-RT, MeFoto Globetrotter tripod, grips, Black Rapid RS-7, CAMS plate and strap system, Lowepro Flipside 500 AW, and a few other things...
smugmug (external link)

  
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Johnny ­ Thunder
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Aug 24, 2007 15:58 |  #7

Wow...

Utter Crap. Such a sigma lens doesnt exist the 70-200 2.8 IS will work perfectly, but it will give a cropped field of view (112 - 320, like all 1.6 crop cameras) but it will be f2.8 through out the entire range. Order from someone reputable.

-Johnny


T2i gripped with kit lenshttp://75.126.234.18/f​orum/showthread.php?t=​400860 (external link)

  
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davesrose
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Aug 24, 2007 15:59 |  #8

photoroebucks wrote in post #3789869 (external link)
stick with canon lenses and avoid nasty brands like sigma and tamron!

Hey....Tamron is not nasty!:p They make some nice budget 2.8 lenses!


Canon 5D mk IV
EF 135mm 2.0L, EF 70-200mm 2.8L IS II, EF 24-70 2.8L II, EF 50mm 1.4, EF 100mm 2.8L Macro, EF 16-35mm 4L IS, Sigma 150-600mm C, 580EX, 600EX-RT, MeFoto Globetrotter tripod, grips, Black Rapid RS-7, CAMS plate and strap system, Lowepro Flipside 500 AW, and a few other things...
smugmug (external link)

  
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Bill ­ Aanestad
THREAD ­ STARTER
Hatchling
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Aug 24, 2007 16:24 |  #9

Thanks so much for all of the responses. You have solved my problem. I have reported the incident to SIGMA Customer Service as they requested. Now ... off to a happier experience ... ordering the 70-200 IS !

Thanks for your quick responses. I'll not be responding further to this thread.
PROBLEM SOLVED! Bill




  
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toneyw
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Location: San Francisco, CA
     
Aug 24, 2007 17:00 |  #10

1) He doesn't know what he's talking about
2) Sounds like he gets a larger commission from the Sigma
3) Time to shop some where else


Canon 30D Gripped
EF 70-200 2.8L IS
EFS 17-55 2.8 IS
Speedlight 430EX
055XPROB w/ 488 RC2 Head

  
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davesrose
Title Fairy still hasn't visited me!
3,725 posts
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Location: Atlanta, GA
     
Aug 24, 2007 17:14 as a reply to  @ toneyw's post |  #11

This is probably what he was trying to sell you......a $850 lens. You think he might be working on insane commission? :lol:

http://www.amazon.com …tal-Cameras/dp/B0009V13XS (external link)

If you ever go FF, though.....the Canon 70-200mm is an EF (meaning it will work on any EOS).

http://www.amazon.com …oto&qid=1187993​701&sr=1-4 (external link)

http://www.amazon.com …314001&pf_rd_i=​B00006I53W (external link)


Canon 5D mk IV
EF 135mm 2.0L, EF 70-200mm 2.8L IS II, EF 24-70 2.8L II, EF 50mm 1.4, EF 100mm 2.8L Macro, EF 16-35mm 4L IS, Sigma 150-600mm C, 580EX, 600EX-RT, MeFoto Globetrotter tripod, grips, Black Rapid RS-7, CAMS plate and strap system, Lowepro Flipside 500 AW, and a few other things...
smugmug (external link)

  
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P51Mstg
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Aug 25, 2007 11:16 as a reply to  @ davesrose's post |  #12

The Truth is still in him.

Why? Because it hasn't come out yet.

He is a lying coc___king piece of $hitt. You need to go back to the store and show him some of the response to this thread and let him explain them away.

Have a nice day

Mark H


Too Much Camera Stuff......

  
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ScottE
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3,179 posts
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Location: Kelowna, Canada
     
Aug 25, 2007 11:39 |  #13

If you want to get advice from a salesman you should find a more competent source.

An f/2.8 lens will always be an f/2.8 lens on any camera. Putting a 1.4x teleconverter on it will reduce it to f/4 because only 1/2 the light is used and putting a 2x teleconverter will reduce it to f/5.6. Changing the size of the sensor does not change the intensity of the light striking the sensor so the maximum f/stop does not change.

A 70-200 mm lens is always a 70-200 mm lens and will give the same angle of view on your camera as any other 70-200 mm lens on your camera. However, someone using a camera with a larger sensor, like a 5D, would need a 112-320 mm lens to take the same pictures that you can take with the 70-200 on your camera.

The only use of the 1.6x crop factor is to determine what lens someone using a different camera from your would have to use to take the same pictures you can take with your camera. In other words, if you don't own a different camera the crop factor is useless information to you.




  
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jkoc
Senior Member
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375 posts
Joined Mar 2007
     
Aug 25, 2007 11:41 |  #14

wow u should go back and record the dude with your cellphone

i cant believe he would give such erroneous info to a customer.



  
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JCH77Yanks
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Aug 25, 2007 11:49 |  #15

If you're ordering online, just go to http://www.bhphotovide​o.com/ (external link). They definitely know photography in and out.


Joe Halliday
7D | XT | 10-22 | 24-105 f/4L | 28 1.8 | 50 1.4 | 85 1.8 | 580EXII | 430EXII | 430EX | Flickr (external link)| 500px (external link) |
Dial "M" for Manual.

  
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20D and 70-200 f2.8 IS -- A Good Match?
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