ef-s lens

[fenmarwal]

Hi, do the ef-s lens take into account the crop factor? ie is ef-s 55-250 actually that, or 88-400 on a 500d?
Thanks Andy.

[ricktas]

The lens is as it is marked. A 50mm lens doesn't magically become an 80mm lens just cause it is put on a different camera body.

Refer to this for more explaination:

http://www.ausphotography.net.au/forum/showlibrary.php?title=New_To_Photography:Full_Frame_vs_APS-C_DX_crop_factor_w_example

http://www.ausphotography.net.au/forum/showlibrary.php?title=New_To_Photography:Focal_Length_vs_Crop_Factor