Ef vs Efs lenses on the 550D?

[ecphoto]

If you take a 50mm EF lens and put it on a full frame camera such as the 5D, then it will give you a "true" 50mm look.

Only if you consider 35mm film (or full frame digital) to be 'true'.
If the only camera(s) you use have an APS-C sized sensor, then the view you get from a 50mm lens will be your truth.

Ask someone who grew up shooting with a medium format camera, what their 'true' 50mm look is...wide angle.

For anyone who only has an APS-C camera (1.5 or 1.6 crop factor)....and isn't familiar with 35mm film SLR cameras & lenses....they should wipe their mind of 'The Crop Factor'.

My perception is already tainted since I learned on 35mm lol.

How does the difference show on medium format? I've never used or even seen one up close.

 

[Big Mike]

It's basically the opposite effect of what you get with the crop factor. A 50mm lens gives you a much wider field of view than you get on 35mm film.

 

[belial]

Only if you consider 35mm film (or full frame digital) to be 'true'.
If the only camera(s) you use have an APS-C sized sensor, then the view you get from a 50mm lens will be your truth.

Ask someone who grew up shooting with a medium format camera, what their 'true' 50mm look is...wide angle.

For anyone who only has an APS-C camera (1.5 or 1.6 crop factor)....and isn't familiar with 35mm film SLR cameras & lenses....they should wipe their mind of 'The Crop Factor'.

agreed. A medium format 50 would be a medium wide angle. Not everything is based on 35 mm standards.