Canon EOS-40D and Sigma 120-400mm and 150-500mm Lens Firmware Upgrade
Sigma have announced that there will be an upgrade available for their two new large-range telephoto zoom lenses, the 120-400mm f/4.5-5.6 DG OS HSM and 150-500mm f/5-6.3 DG OS HSM for Canon mount, to address an issue when attached to the Canon EOS-40D. The problem is encountered when the OS function is switched on then the number of continuous frames per second decreases. The affected lenses are:
APO 120-400mm f/4.5-5.6 DG OS HSM for Canon - Serial Numbers lower than 1011001
APO 150-500mm f/5-6.3 DG OS HSM for Canon - Serial Numbers lower than 1007001
The firmware has already been upgraded for lenses with Serial Numbers above these.
CR Kennedy, the Australian distributor for Sigma Lenses, have indicated that they will supply the free upgrade from today. www.crkennedy.com.au
Tags: 40D, APO 120-400mm f/4.5-5.6 DG OS HSM, APO 150-500mm f/5-6.3 DG OS HSM, Canon, D-SLR, Digital SLR, EOS-40D, Firmware, Sigma, SLR Lenses, upgrade
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