panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some usm random address to obtain the canon body signature. From that signature, sigma lens firmware selects the mapping (hardcoded) curve to use with the programed body. Mis-match key will make sigma lens going crazy since it has no base (or use the generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some usm random address to obtain the canon body signature. From that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the programed body. Mis-match key will make sigma lens going crazy since it has no base (or use the generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some usm random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the programed body. Mis-match key will make sigma lens going crazy since it has no base (or use the generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some usm random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base (or generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base (or generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base (or generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i stay away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hardcoded) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base (or generic one for all) to map for focussing. Many sigma owner does not figured out why their lens suddenly stop working... this is one of the reason i stay away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hard code) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base (or generic one for all) to map for focussing. Many sigma owner does not figured out why their lens suddenly stop working... this is one of the reason i stay away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hard code) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base to map for focussing. Many sigma owner does not figured out why their lens suddenly stop working... this is one of the reason i stay away from third party lenses
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good performer sigma. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hard code) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base to map for focussing. Many sigma owner does not figured out why their lens suddenly stop working...
panm wrote:
Despite the numerous AF complaints about Sigma, I was dumb enough to purchase a new 50f1.4 from Adorama before the holidays. While the lens is fine optically, as arrived, it needed +15MA a MFD and beyond -20 MA at infinity. I send it Sigma once and came back needing +20MA at MFD and +5 at infinity. Better, but still not usable.
So, I sent it back to Sigma, and now the tech called me and told me that need my camera (5DII) to calibrate the lens. He said that as Canon updates firmware for the cameras, the firmware on the lens may have conflict with the new camera firmware. So what they do is re-write the lens firmware to adjust is for a specific camera and firmware. Which makes me thinking, that even if Sigma calibrates the lens, it could still get out of whack if there is a new firmware update. Also, what happens once I get a new camera say 5DIII?
Anyone else went through this?
Should have sent the damn thing to Adorama while I had a chance.
P.
hmm, i thought everyone is aware of this Sigma patching thing besafe, don\'t upgrade your body firmware if you have some good performer sigma. Sigma lens usually keying off some random address to obtain the canon body signature and from that signature, sigma lens firmware select the mapping (hard code) curve to use with the integrated/programed body. Mis-match key will make sigma lens going crazy since it has no base to map for focussing.
Feb 09, 2012 at 11:16 PM
Previous versions of mttran's message #10330223 « Sigma 50 1.4 AF firmware »
besafe, don\'t upgrade your body firmware if you have some good sigma performer. Sigma lens usually keying off some usm random address to obtain the canon body signature. From that signature, sigma lens firmware selects the mapping (hardcoded) curve to use with the programed body. Mis-match key will make sigma lens going crazy since it has no base (or use the generic one for all) to map for focussing. Many sigma owner can not figure out why their lens suddenly stop working... this is one of the reason i\'ve stayed away from third party lenses