Question about Tamron lens

Started Jun 21, 2011 | Discussions thread
Brian D. Schneider
Brian D. Schneider Forum Pro • Posts: 18,225
Re: Question about Tamron lens

Peter A. Stavrakoglou wrote:

Brian D. Schneider wrote:

Since DSLR sensors come in different sizes, there is no consistent reference except 35mm. The 7D and other Canon APS-C sensors cameras have a crop factor of 1.6. Nikon's have a crop factor of 1.5. Your Tamron 17-50mm is in 35mm equivalent, not the Canon 7D equivalent.

Isn't that what I said?

Yes and it's still wrong. The Tamron 17-50 is not labeled in 35mm eq, it's labeled with the actual focal length.

The way you worded that will just confuse beginners even more than they already are.
Brian Schneider

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