30 days old. Lens was about 3 inches away from him and he stayed put. (The B & H catalog says that minimum focus distance is 7.9 inches, but I just tested minimum distance and it's more like 3" or even closer*.) I continue to be amazed by the wonderful squelching of the internal flash on the Canon dslrs. Although the EXIF doesn't show when flash is used, it has been used on just about all of these mantid images. *Note: The 7.9" shown in the B & H specs is correct - it's not from the front of the lens - it's the measurement from the subject to the "film plane" (or in the case of a digital, I imagine, the sensor.