<p>I am not a lightroom user, but judging by the many comments you cannot hardly do without it. That is, until you used Digital Photo Professional from Canon, version 3 covers all Canon DSLR's, version 4 is available for newer models, even though it can be used for JPEG format pictures from all EOS cameras. It may not have all the bells and whistles Photoshop has, but for most users the features are overkill, most in-computer adjustments are basic, and are all very well covered in DPP. Ever conversion from RAW it can handle, may be i bit slow, and other programs like Contenta Converter Premium do conversions in style, with many more nifty features. <br>
So do you really need Photoshop, or could you get by nicely with DPP?</p>