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DPChallenge Forums >> Hardware and Software >> lens compatibility question....
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 07/22/2010 08:42:17 PM · #1
The two lenses that I have now...

Canon EF-S 18-55mm f/3.5-5.6 II
Canon EF 75-300mm f/4.0-5.6 III

are they compatible with the 20D or the 40D etc.... or are the limited up to a certian level. I have googled till my eyes hurt and I cant seem to get an answer.

Anyone have a concrete idea?


07/22/2010 08:44:29 PM · #2
Yes, they'll both work fine on a 20D and 40D, and anything else with an APS-C size sensor. The 18-55 is NOT, however, compatible with full frame and APS-H sensor cameras.
 07/22/2010 08:51:47 PM · #3
Originally posted by spiritualspatula:
Yes, they'll both work fine on a 20D and 40D, and anything else with an APS-C size sensor. The 18-55 is NOT, however, compatible with full frame and APS-H sensor cameras.


Whats an example of a full frame and/or aps-h? lol and ty for the answer!
 07/22/2010 08:58:09 PM · #4
Originally posted by JustCaree:
Whats an example of a full frame and/or aps-h? lol and ty for the answer!


5D and the 1DS series are FF. The rest of the 1D are APS-H, a 1.3 crop factor instead of 1.6...

EF-S lenses work on all the Rebels, the 20D, the 30D, the 40D, the 50D, and the 7D.

R.

Message edited by author 2010-07-22 21:00:10.
 07/22/2010 08:59:05 PM · #5
Full frame is different from APS-H. The Canon 1D mkI, mkII, mkIII, and mkIV are all APS-H, or 1.3 crop sensors. The Canon 5D's and 1DS cameras are full frame, as are the Nikon D700 and D3.
 07/22/2010 09:00:00 PM · #6
Muchas Gracis Bear!! Thats the info I needed... sometimes google is useless... or Im researched out during school and my research schools die when Im not doing homework...!!!

I appreciate it!!

Working on getting a backup body and dont want to get something that isnt compatible!
 07/22/2010 09:00:37 PM · #7
A full frame camera is something like an EOS-1Ds. It is called full frame because the sensor is the same size as a frame of 35mm film. The cameras you and I have are called crop sensor because it is a crop from a full frame. Here is apage that illustrates the differnet sensor sizes. APS-C is what your camera (and mine) have, and is also called a 1.6x crop factor sensor. That means you multiply the focal length by 1.6 to find the equivalent 35mm reach. Confused yet?
 07/22/2010 09:08:23 PM · #8
Originally posted by Yo_Spiff:
A full frame camera is something like an EOS-1Ds. It is called full frame because the sensor is the same size as a frame of 35mm film. The cameras you and I have are called crop sensor because it is a crop from a full frame. Here is apage that illustrates the differnet sensor sizes. APS-C is what your camera (and mine) have, and is also called a 1.6x crop factor sensor. That means you multiply the focal length by 1.6 to find the equivalent 35mm reach. Confused yet?


yup! LOL but whats new!
07/22/2010 09:08:56 PM · #9
Originally posted by Yo_Spiff:
A full frame camera is something like an EOS-1Ds. It is called full frame because the sensor is the same size as a frame of 35mm film. The cameras you and I have are called crop sensor because it is a crop from a full frame. Here is apage that illustrates the differnet sensor sizes. APS-C is what your camera (and mine) have, and is also called a 1.6x crop factor sensor. That means you multiply the focal length by 1.6 to find the equivalent 35mm reach. Confused yet?


It gets better. Nikon's Full frame and APS-C sensors are technically slightly different sizes than Canon's, so a Nikon APS-C (DX in Nikonian) is actually a 1.52 crop and full frame is 36X23.9 while the Canon Full frame is 35.8X23.8.
Other manufacturers vary, as well.
Are we having fun yet?

Message edited by author 2010-07-22 21:09:13.
 07/22/2010 09:09:38 PM · #10
Originally posted by spiritualspatula:
Originally posted by Yo_Spiff:
A full frame camera is something like an EOS-1Ds. It is called full frame because the sensor is the same size as a frame of 35mm film. The cameras you and I have are called crop sensor because it is a crop from a full frame. Here is apage that illustrates the differnet sensor sizes. APS-C is what your camera (and mine) have, and is also called a 1.6x crop factor sensor. That means you multiply the focal length by 1.6 to find the equivalent 35mm reach. Confused yet?


It gets better. Nikon's Full frame and APS-C sensors are technically slightly different sizes than Canon's, so a Nikon APS-C (DX in Nikonian) is actually a 1.52 crop and full frame is 36X23.9 while the Canon Full frame is 35.8X23.8.
Other manufacturers vary, as well.
Are we having fun yet?


ya'll gonna make a girl need to drink!


07/22/2010 09:34:49 PM · #11
Originally posted by spiritualspatula:
Other manufacturers vary, as well.

Oh, yes, can't forget the four thirds system from Olympus and Panasonic.
 07/22/2010 09:37:59 PM · #12
Just my opinion but I would think better glass would be a smarter move right now then another body. If you are doing portraits perhaps the 85 1.8 or 50 1.4 or a zoom such as the 24-70 2.8
 07/22/2010 09:53:16 PM · #13
Originally posted by jminso:
Just my opinion but I would think better glass would be a smarter move right now then another body. If you are doing portraits perhaps the 85 1.8 or 50 1.4 or a zoom such as the 24-70 2.8


Well the backup body serves two purposes... my nephew is getting into photography and has been using my fuji... which is very limited... and would like to experiment more... so his pop has agreed to chip in on a backup body for me... (which will be my primary body and this will become my backup) so that his son can use this body for his photography class in high school. His school offers a rental program but its $200 for the school year... so his dad said hed give me that 200 - 300 towards another camera... kind of a no brainer for me LOL

eta to add that ill be buying used... and my area has some decent deals on craigslist etc. -- I wish I could swing better glass... just not in MY budget.

Message edited by author 2010-07-22 21:54:44.
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