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#21
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Cheap SD Cards
On 11/17/2017 7:25 PM, Savageduck wrote:
On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. Google is your friend: https://www.delkindevices.com/product/black-memory-cards/ -- PeterN |
#22
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Cheap SD Cards
On 11/17/2017 9:59 PM, Savageduck wrote:
On Nov 17, 2017, Bill W wrote (in ): On Fri, 17 Nov 2017 16:25:29 -0800, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. I agree with this - I doubt that card corruption or partial failure was the cause of the issue he had. I believe the first thing to establish is what the specs of the SD card are. Delkin produce good products including SD and CF cards. However, they produce SD cards with a wide range of specs and prices, some are truly fast cards with corresponding higher prices. Since Peter, in his subject line, and his OP narative hinted that the SD card in question was “cheap”, I am inclined to assume that this card has slow read/write specs. Hence the corruption problems when faced with a high performance camera trying to clear the buffer as fast as it can, into a card which can’t write fast enough. The D800 is not a high speed camera, especially when using SD. While I did not do the research myself, the information about SD being slower came from a Lexar engineer, who I met. When shooting at the highest speed SD is definitely slower than CF, on my D800. When I called Delkin, the seemed to think it was my reader that was causing the problem. -- PeterN |
#23
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Cheap SD Cards
On 11/18/2017 2:54 AM, Savageduck wrote:
On Nov 17, 2017, Eric Stevens wrote (in ): On Fri, 17 Nov 2017 18:59:35 -0800, Savageduck wrote: --- snip --- Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. I agree with this - I doubt that card corruption or partial failure was the cause of the issue he had. I believe the first thing to establish is what the specs of the SD card are. Delkin produce good products including SD and CF cards. However, they produce SD cards with a wide range of specs and prices, some are truly fast cards with corresponding higher prices. Since Peter, in his subject line, and his OP narative hinted that the SD card in question was “cheap”, I am inclined to assume that this card has slow read/write specs. Hence the corruption problems when faced with a high performance camera trying to clear the buffer as fast as it can, into a card which can’t write fast enough. And through all of this discussion and theorising not one of the resident Nikon owners/users remember that In the back of (at least) most of their manuals Nikon specifies the minimum standard of common memory cards which will run with the particular camera. What does it say for the D800? Beats me! I don’t own a D800, as a matter of fact I don’t own any FF Nikon DSLR, and I have no idea if Peter RTFM, and he is the only Nikon user who counts in this discussion. So perhaps you could assist, and provide that snippet of information, or perhaps Peter will let us know if he has RTFM. Not the whole manual, but I checked and Delkin Black exceeds the specs. -- PeterN |
#24
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Cheap SD Cards
On Nov 18, 2017, PeterN wrote
(in article ): On 11/17/2017 7:25 PM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. Google is your friend: https://www.delkindevices.com/product/black-memory-cards/ ....and you have yet to tell us what the actual rating is. Google does not tell us what is printed on the SD card in your possession. Which of these Black cards did you buy? -- Regards, Savageduck |
#25
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Cheap SD Cards
In article , Eric Stevens
wrote: And through all of this discussion and theorising not one of the resident Nikon owners/users remember that In the back of (at least) most of their manuals Nikon specifies the minimum standard of common memory cards which will run with the particular camera. What does it say for the D800? nikon and others have a list of cards they've tested and are on their approved list. that doesn't mean other cards won't work or that a card from the approved list might fail. |
#26
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Cheap SD Cards
On 11/18/2017 12:30 PM, Savageduck wrote:
On Nov 18, 2017, PeterN wrote (in article ): On 11/17/2017 7:25 PM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. Google is your friend: https://www.delkindevices.com/product/black-memory-cards/ ...and you have yet to tell us what the actual rating is. Google does not tell us what is printed on the SD card in your possession. Which of these Black cards did you buy? UHS-II. As I said earlier, card speed is not an issue with SD on a D800. That is not a combination where R/W speed is important. -- PeterN |
#27
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Cheap SD Cards
On Nov 18, 2017, PeterN wrote
(in article ): On 11/17/2017 9:59 PM, Savageduck wrote: On Nov 17, 2017, Bill W wrote (in ): On Fri, 17 Nov 2017 16:25:29 -0800, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. I agree with this - I doubt that card corruption or partial failure was the cause of the issue he had. I believe the first thing to establish is what the specs of the SD card are. Delkin produce good products including SD and CF cards. However, they produce SD cards with a wide range of specs and prices, some are truly fast cards with corresponding higher prices. Since Peter, in his subject line, and his OP narative hinted that the SD card in question was “cheap”, I am inclined to assume that this card has slow read/write specs. Hence the corruption problems when faced with a high performance camera trying to clear the buffer as fast as it can, into a card which can’t write fast enough. The D800 is not a high speed camera, especially when using SD. While I did not do the research myself, the information about SD being slower came from a Lexar engineer, who I met. When shooting at the highest speed SD is definitely slower than CF, on my D800. Strange, there should only be a speed difference if you are using different rated CF and SD cards. I never had that speed differential issue with my D300S which is two years older than your D800. When I called Delkin, the seemed to think it was my reader that was causing the problem. Focus shift, move the blame to the user. Have you had an issue reading any other SD cards? Have you tried to shoot single exposures using that card? -- Regards, Savageduck |
#28
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Cheap SD Cards
On Nov 18, 2017, PeterN wrote
(in article ): On 11/18/2017 2:54 AM, Savageduck wrote: On Nov 17, 2017, Eric Stevens wrote (in ): On Fri, 17 Nov 2017 18:59:35 -0800, Savageduck wrote: --- snip --- Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. I agree with this - I doubt that card corruption or partial failure was the cause of the issue he had. I believe the first thing to establish is what the specs of the SD card are. Delkin produce good products including SD and CF cards. However, they produce SD cards with a wide range of specs and prices, some are truly fast cards with corresponding higher prices. Since Peter, in his subject line, and his OP narative hinted that the SD card in question was “cheap”, I am inclined to assume that this card has slow read/write specs. Hence the corruption problems when faced with a high performance camera trying to clear the buffer as fast as it can, into a card which can’t write fast enough. And through all of this discussion and theorising not one of the resident Nikon owners/users remember that In the back of (at least) most of their manuals Nikon specifies the minimum standard of common memory cards which will run with the particular camera. What does it say for the D800? Beats me! I don’t own a D800, as a matter of fact I don’t own any FF Nikon DSLR, and I have no idea if Peter RTFM, and he is the only Nikon user who counts in this discussion. So perhaps you could assist, and provide that snippet of information, or perhaps Peter will let us know if he has RTFM. Not the whole manual, but I checked and Delkin Black exceeds the specs. Which Delkin Black exceeds the specs? They have a whole range of read/write specs, all at different price points. You still haven’t told us the read/write specs for your specific Delkin Black SD card. I still contend that if you used your Delkin card for normal shooting, rather than the multi-exposure exercise you were engaged in, there might well be no issues. -- Regards, Savageduck |
#29
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Cheap SD Cards
On Nov 18, 2017, PeterN wrote
(in article ): On 11/18/2017 12:30 PM, Savageduck wrote: On Nov 18, 2017, PeterN wrote (in article ): On 11/17/2017 7:25 PM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. Google is your friend: https://www.delkindevices.com/product/black-memory-cards/ ...and you have yet to tell us what the actual rating is. Google does not tell us what is printed on the SD card in your possession. Which of these Black cards did you buy? UHS-II. As I said earlier, card speed is not an issue with SD on a D800. That is not a combination where R/W speed is important. UHS-II is just a class of card, still no R/W speed. Typically UHS-II cards are not bargain basement cards, and you describe this particular card as cheap. Card speed is always an issue D800 or any other camera. R/W speed might not be that important when shooting normal single shots, but you were engaged in shooting multiple exposures. -- Regards, Savageduck |
#30
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Cheap SD Cards
On 11/17/2017 07:25 PM, Savageduck wrote:
On Nov 17, 2017, PeterN wrote (in article ): On 11/17/2017 11:56 AM, Savageduck wrote: On Nov 17, 2017, PeterN wrote (in article ): On 11/16/2017 10:50 PM, Savageduck wrote: On Nov 16, 2017, PeterN wrote (in article ): Sunday I did a quick sunset shoot. Out of 46 images, several had weird colors in unusual portions of the images. That shouldn’t be a problem for you. weird colors in unusual portions of the images should be right in your wheelhouse. ;-) Not like this: https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0 Yup! That looks like a corrupt file issue. As to where that corruption is happening one can best surmise that it was the card. However, there can be all sorts of causes, mostly due to current, clearing the buffer, and writing issues. So it would be best to run a check with a known good performing card to eliminate possible issues with the camera. What was the brand of the card in question, what was its rating, and which camera were you using? D800, and a Delkin Black. I complained to Delkin. They are sending me a reader, and requested that I test the card with that reader. The shot you see is a ten shot multiple exposure. I was testing to see how much time was needed between shots, to get a similar effect to a long exposure. despite the corruption, my conclusion is that it can be done. In a calm bay it takes about 2.5 seconds between each shot, for a ten shot exposure. What is a Delkin Black? Delkin Black is meaningless, all that tells us is who the manufacturer is. What is the actual read/write speed of the card? Also, because you have somewhat explained what you were doing with multiple exposures, I suspect that this was just a slow card choking on what was being fed it, and unable to clear the camera buffer. I have a feeling that if you just used it to shoot a single exposure there might be no problem at all. If you are going to use a high performance camera, you should use high performance cards regardless of how tempting it might be to go the budget card route. I have to concur with SD. I have seen a very similar effect when copying photo files from one drive to another and the copy was interrupted. (this is from the days of slow drives and RS-232 null modem cables.) -- Ken Hart |
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