Thank you Vahagan for your informative video. I would just like to flag up a possible problem with the write speed test part of the video. The one you did on the D4. I've done similar tests on my D610. What I did was start the timer when shutter was released. At that stage images start being written to the card and also to the camera's internal buffer. When the shutter count drops, you have filled the internal buffer, but the card is still writing at full speed. I then kept on shooting for a bit longer (about 30 secs). I then let the shutter release go, but didn't stop the timer until the green light at the back of the camera indicated that the camera was no longer writing to the memory card. You then get the memory card and stick it into the computer to see just how much data was actually written in the end (total size of all the images). You can then divide the MB written by the time taken and you get the MB/s write rate of the camera (or the memory card if that is slower). So for instance, on one of my first tests, when I was still doing a short quick test, from my notes, I timed 11 seconds to write, 384MB was written, giving me a camera maximum write speed of 384MB / 11secs = 34.9MB/s (just over an image per second on my camera!). I think this is more accurate method to use to measure the write speed of the camera, as the internal buffer has no effect on the time it takes to write all images to the card. Apart from that, very interesting video. I was looking because I am considering buying a second hand D810 which uses CompactFlash, but is much cheaper than the D850 I would LOVE to buy, but which is outside my budget. Interesting to see that CompactFlash is not so different than XQD, and yet it is quite a bit cheaper to buy too. I would be curious if in your experience CompactFlash is similar in reliability to XQD. When on holiday, I tend to use "day cards" to record the pictures of the day and then copy the images to my larger (and cheaper) backup cards at the hotel. As the D810 only has one CompactFlash and one SD card slot, I am wondering if CompactFlash would be up to the task of being my only "day card"? What do you think? (I don't particularly mind too much if I lose a day of images, but losing the card means I need to buy and carry extra cards to replace in case of failure).
That was a cool speed download comparison. The memory cards got smaller over the years, I remember that one of the earliest digital cameras used a 3.5 inch floppy disk. This video reminds me that I have to get the CF card as a back-up for my D800. Very cool video.
For me the read speed to camera is always far more important than download speed to computer (Download speeds direct from cards to my Nextodi professional video/image storage units is always superb). The other very important aspect is price of cards and reliablity. It is amazing just how well the older CF cards do in speed, performance and toughness in the field compared to far more expensive XQD and CFexpress cards. I agree with you about the SD cards and have had more corrupted files and case breakages from them. The micro SD cards I only use in phones and tablets.
I wonder if the card reader is limiting the speed of the faster XQD, else it's really bad that it can't even reach half of it's advertised speed while reading one big 14GB file. The SD cards were closest to their advertised speeds. With CF you could still argue that it doesn't state its max speed besides simply advertising it as a UDMA 7 which is far more theoretical than directly stating max speeds. UDMA takes me back to the times of IDE HDDs before SATA was a thing and when a support for higher UDMA modes didn't necessarily mean that the HDD was able to reach such speeds. Btw, from all the SD and MicroSD cards I owned, none ever broke. Yes, CF cards feel far sturdier but there I'm more worried about the pins inside the device.
Yes, it is true. All SDCARD I ever have split into a half but the solution is really-really simple. Always glue down the whole perimeters with really good superglue/acryclic. It solve my problems in all of my SDCARDs none of them fail with this simple fix. SDCARD is cheaper, more robust(no sensitive to anything) especially the micro-sD with sealed plastic
@@Vahagraphy It is not a little bit fragile, they are all cracked into half because of plastic limitations. But in micro sd cards with a sealed units, they are all tough even under deep saltwater. Only the shell (micro to full-size SDCARD) that is always cracked and superglue really works well, It melts the plastics and bonds it really strongly
@@rondhole good to know. I have a few of those micro sd 128gb samsung evo cards I use with an SD adapter. never had an issue. Use it on some dslrs for back up to a CF.
Hello Minecraft. Both cards are great. both have similar performance and price. You wont go wrong with either or. however I believe cfXpress is the future , I would go with the that. tech wise the cf express is more advanced and is not fully licenced by sony. As for now the performance and built quality is the same. so is the price.
Thank you Vahagan for your informative video. I would just like to flag up a possible problem with the write speed test part of the video. The one you did on the D4.
I've done similar tests on my D610. What I did was start the timer when shutter was released. At that stage images start being written to the card and also to the camera's internal buffer. When the shutter count drops, you have filled the internal buffer, but the card is still writing at full speed. I then kept on shooting for a bit longer (about 30 secs). I then let the shutter release go, but didn't stop the timer until the green light at the back of the camera indicated that the camera was no longer writing to the memory card. You then get the memory card and stick it into the computer to see just how much data was actually written in the end (total size of all the images). You can then divide the MB written by the time taken and you get the MB/s write rate of the camera (or the memory card if that is slower).
So for instance, on one of my first tests, when I was still doing a short quick test, from my notes, I timed 11 seconds to write, 384MB was written, giving me a camera maximum write speed of 384MB / 11secs = 34.9MB/s (just over an image per second on my camera!).
I think this is more accurate method to use to measure the write speed of the camera, as the internal buffer has no effect on the time it takes to write all images to the card.
Apart from that, very interesting video. I was looking because I am considering buying a second hand D810 which uses CompactFlash, but is much cheaper than the D850 I would LOVE to buy, but which is outside my budget. Interesting to see that CompactFlash is not so different than XQD, and yet it is quite a bit cheaper to buy too.
I would be curious if in your experience CompactFlash is similar in reliability to XQD. When on holiday, I tend to use "day cards" to record the pictures of the day and then copy the images to my larger (and cheaper) backup cards at the hotel. As the D810 only has one CompactFlash and one SD card slot, I am wondering if CompactFlash would be up to the task of being my only "day card"? What do you think? (I don't particularly mind too much if I lose a day of images, but losing the card means I need to buy and carry extra cards to replace in case of failure).
That was a cool speed download comparison. The memory cards got smaller over the years, I remember that one of the earliest digital cameras used a 3.5 inch floppy disk. This video reminds me that I have to get the CF card as a back-up for my D800. Very cool video.
back up cards are important when doing paid assignments. very important
For me the read speed to camera is always far more important than download speed to computer (Download speeds direct from cards to my Nextodi professional video/image storage units is always superb). The other very important aspect is price of cards and reliablity. It is amazing just how well the older CF cards do in speed, performance and toughness in the field compared to far more expensive XQD and CFexpress cards. I agree with you about the SD cards and have had more corrupted files and case breakages from them. The micro SD cards I only use in phones and tablets.
have to agree with you here. SD cards had many fail/break, CF cards amazing, XQD pricey but fast. hehe
Awesome testing i love it,I wonder that my old 5d markII can use that type of cf card or express
THank you Tony. It should be able to. I remember my 5D mkii days. paid 3K new when it just came out.
I wonder if the card reader is limiting the speed of the faster XQD, else it's really bad that it can't even reach half of it's advertised speed while reading one big 14GB file. The SD cards were closest to their advertised speeds. With CF you could still argue that it doesn't state its max speed besides simply advertising it as a UDMA 7 which is far more theoretical than directly stating max speeds. UDMA takes me back to the times of IDE HDDs before SATA was a thing and when a support for higher UDMA modes didn't necessarily mean that the HDD was able to reach such speeds.
Btw, from all the SD and MicroSD cards I owned, none ever broke. Yes, CF cards feel far sturdier but there I'm more worried about the pins inside the device.
Yes, it is true. All SDCARD I ever have split into a half but the solution is really-really simple. Always glue down the whole perimeters with really good superglue/acryclic. It solve my problems in all of my SDCARDs none of them fail with this simple fix. SDCARD is cheaper, more robust(no sensitive to anything) especially the micro-sD with sealed plastic
Thanks for the tip Rondhole. Actually I've never had any issue with CF cards. Yes SD cards are a bit more fragile.
@@Vahagraphy It is not a little bit fragile, they are all cracked into half because of plastic limitations. But in micro sd cards with a sealed units, they are all tough even under deep saltwater. Only the shell (micro to full-size SDCARD) that is always cracked and superglue really works well, It melts the plastics and bonds it really strongly
@@rondhole good to know. I have a few of those micro sd 128gb samsung evo cards I use with an SD adapter. never had an issue. Use it on some dslrs for back up to a CF.
@@Vahagraphy Yes, That SDCARD is much tougher than Compact Flash because it is not sensitive to salt, magnetic fields or electrostatic discharge
Very nice and useful review!!!~
Thank you! Cheers! Glad you found it useful.
Thank you
You're welcome 🤘🏼🤘🏼
What should i buy for nikon z6ii cf express or xqd
Hello Minecraft. Both cards are great. both have similar performance and price. You wont go wrong with either or. however I believe cfXpress is the future , I would go with the that. tech wise the cf express is more advanced and is not fully licenced by sony. As for now the performance and built quality is the same. so is the price.