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speed of compact flash card
- Thread starter rhkplam
- Start date
Hi.
I bought a Lexar Ultra II 1GB with my G6, because it was quite cheap. Ebay auction about 80 Euro. $?. Yet, i also tested a standard speed card.
I have to say, that there is almost no differrence in wright speed with the G6. I Looked at the files sizes after testing at my PC and then i alculated the average write speed to clear a full buffer.
The write speed with an ultra II is in average about 0,8 MB/second, which is quite slow. That is a speed which also standard cards deliver. Maybe 5-10 % less, depending on the specific card.
So the G6 cannot use the these fast wright speeds of the ultra II.
But with a fast card reader, the transfer speed to you PC is about 7 or 8 times faster with the ultra II Card.
Now it is on you if you want to pay about 15-20% more to have higher transfer speed to PC.
I hope my comments will help you i your decision.
Bye. Nils.
Scott Skinner
Senior Member
From my mini-tests I do not notice any difference in camera (G6) write speeds between a 1GB Sandisk Extreme and a 3 year old 256 MB Ridata card. Nor do I notice any difference in computer transfer speeds.
http://forums.dpreview.com/forums/read.asp?forum=1023&message=10701367
I do notice a big difference in view times of pics when viewed on the G6 LCD. If you plan on using the G6 LCD to view your photos (play mode), I recommend getting a faster card. Then again, maybe I am the only one noticing this difference
)Hi Scott.From my mini-tests I do not notice any difference in camera (G6)
write speeds between a 1GB Sandisk Extreme and a 3 year old 256 MB
Ridata card. Nor do I notice any difference in computer transfer
speeds.
http://forums.dpreview.com/forums/read.asp?forum=1023&message=10701367
I do notice a big difference in view times of pics when viewed on
the G6 LCD. If you plan on using the G6 LCD to view your photos
(play mode), I recommend getting a faster card. Then again, maybe
I am the only one noticing this difference
You are absolutely right regarding transfer speed, when using the G6 as transfer device. It is the same speed of both cards because of that slow USB 1.1 of the G6.
When using a USB 2.0 CF device the Ultra II has maximum wright speed of 10 MB/s. That is much faster than a standard speed card.
But you need to have USB 2.0 to get this speed advantage.
Bye
Sorry it must be ...maximum read speed....
Besides that wright must be written "write". Really bad english.
Forbes
Senior Member
the manufacturers don't want us to know their Compact falsh performance speeds. We know the Sandisk UltraII is very fast, and it costs a little more. Mainly you benefit from it in transfers and perhaps in-camera slide shows (I'll have to test this). A year ago I was led to believe if you could be sure you were getting 4X you'd be ok performance-wise.
This site gives an example of the intimidating array of choices. How many ways can you describe what a CF does? Just look at this site, and hardly any of those descriptions say anything meaningful.
http://www.buy.com/retail/computers/category.asp?loc=15579
Today I'd say you can't go wrong with 12X or better. The larger cards seem to be slower designs probably due to the massive amount of data they can file away. One reason to buy higher end CF (in some cases) is that it has a lifetime warranty, i.e. the cheaper Sandisk has just a 5 year warranty and UltraII has Lifetime.
The S1 IS has special requirements and nowhere thus far have I been able to discern what the acceptable minimum would be. We know that the UltraII works well in it but I think the Lexar 40X does well too. Anyone?
Regards, D Forbes
Orange County, California
http://www.DForbesRowanPhotos.OrangeCountyandSurrounding.PhotoShare.co.nz
Eh-Eighty: As Qrtan says, a Gem! It's a terrific camera, my favorite to carry!
Gee-Five: Has great features along with excellent image sharpness, color response & latitude -- It's easy to hold with either left or right hand, offers solid build and it's black!
(There! Now I cannot be accused of harming newbie camera searches).
D. F. R.
This site gives an example of the intimidating array of choices. How many ways can you describe what a CF does? Just look at this site, and hardly any of those descriptions say anything meaningful.
http://www.buy.com/retail/computers/category.asp?loc=15579
Today I'd say you can't go wrong with 12X or better. The larger cards seem to be slower designs probably due to the massive amount of data they can file away. One reason to buy higher end CF (in some cases) is that it has a lifetime warranty, i.e. the cheaper Sandisk has just a 5 year warranty and UltraII has Lifetime.
The S1 IS has special requirements and nowhere thus far have I been able to discern what the acceptable minimum would be. We know that the UltraII works well in it but I think the Lexar 40X does well too. Anyone?
--
Regards, D Forbes
Orange County, California
http://www.DForbesRowanPhotos.OrangeCountyandSurrounding.PhotoShare.co.nz
Eh-Eighty: As Qrtan says, a Gem! It's a terrific camera, my favorite to carry!
Gee-Five: Has great features along with excellent image sharpness, color response & latitude -- It's easy to hold with either left or right hand, offers solid build and it's black!
(There! Now I cannot be accused of harming newbie camera searches).
D. F. R.
technicsplayer
Senior Member
the lexar 40x is fine for max quality 640x480 movies on the S1. I don't have one to try but since there is 40% more pics taken in continuous shutter after the buffer has filled with ultra2 compared to a standard 16x card perhaps the ultra2 will squeeze a few more shots out in the same buffer time than a 40x card, only a practical test will tell.
technicsplayer
Senior Member
fingers!! ; of course I meant the same shutter time than a 40x card.
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