Where is the serial number on canon lens?

<p>I've just brought Canon EF 100mm F2.8 L IS macro lens and their is an offer for cashback. On the form it is asking for the serial number. Where would it be and how long is the number?</p>

<p>Have you looked at the warranty card?</p>

<p>On mine it is engraved on the steel mount - you have to take the lens off the camera to see it.</p>

On that lens, the serial number is where Rick suggested. Hold the lens pointed away from you, and you will see it.

<p>Now that the main question has been dealt with, does anyone know if there is a pattern to location of the serial number? It doesn't seem to be chronologically determined, at least.</p>

<p>On some of my Canon lenses, both recent origin and early lenses still in the list, the number is on the metal (or plastic) base plate, as in the case here.<br>

On some others, similarly both recent origin and early lenses still in the list, it is stamped into the lens barrel on the bottom near the mount, with or without paint.</p>

<p> </p>

<p>I don't know if this is a general pattern, but it is on the barrel without paint on my EF-S lenses, on the steel mount on my EF lenses, and on the barrel with paint on my 1.4x converter.</p>

<p>Does everyone know where the VIN is located on their vehicle?</p>

<p>EF 70-200 2.8 IS MKI and 135 2.8 SF: on the barrel with paint<br>

EF-S 17-55 2.8: on the barrel no paint<br>

EF 85 1.8: can't find it anywhere</p>

<p>W T: On the label on my driver door and on the engine block.</p>

<p>[[EF 85 1.8: can't find it anywhere]]</p>

<p>The photograph on the B&H website shows the serial number on the back of the lens near the rear element. </p>

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<p>EF 85 1.8: can't find it anywhere.</p>

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<p>Have a look at black shroud on Camera Mount end of the lens: mine is difficult to see as it is NOT painted, this is the same with my EF 100F/2.8 Macro (the first version).</p>

<p>WW</p>

<p> </p>

<p>Found it! Thanks guys. It had to be at the precise angle under the light for these old eyes to see it. So I dug out the 28 1.8 and it's in the same spot.</p>