Re: Narrowly averted disaster using MxM card
 

We've been through this before but as I stated last time both MxM and ATP publish very precise specifications that are every bit as detailed as those published by Sony.

SDHC works if you use it properly. If people will cheap out on cards or mishandle them then that there is separate issue.

Anybody would think we were hacking the cameras and installing our own custom firmware. It's not as if Sony don't sell their own media or indeed support hard disk recording via the expresscard slots.

I'm now dropping out of this thread. I know the solutions I use work and I have confidence in them (i.e. latest firmware, latest MxM cards and premium ATP or Sandisk cards ONLY).

Re: Narrowly averted disaster using MxM card
 

For the last three shows I shot I stopped using the cards altogether. I use my homemade hard disk recorder instead.

http://www.dvinfo.net/forum/sony-xdc...ml#post1584446

I use the cards for portable shooting only now. Because so many hours fit on the hard drives I can get an entire show into a single file.

John

Re: Narrowly averted disaster using MxM card
 

Don't delete clips if you can help it. This will fragment the data as the camera will be forced to use the gaps created by the deleted file.[/QUOTE]

So what you are saying is to format the card in the camera after shooting rather than "deleting all clips".

I have the Ex-3, Ex-1R and the PMW 320. Both the Ex-3 and Ex-1R have the deleting all clips option. The PMW 320 does not have this option.... the only option is to format the card. Is that what we should be doing after transferring the clips to the computer in preparation for shooting again?

Thanks

Ronnie Martin

Re: Narrowly averted disaster using MxM card
 

It makes no difference with SD cards whether you delete or format as the wear levelling circuits on the card will always write data to the least used cells, so even with a card that was part full and then formatted the cards internal circuits will use the cells that were not used prior to formatting in order to ensure your not continually using the same memory cells over and over while leaving others unused.

I would expect similar behaviour on most types of solid state memory.

Re: Narrowly averted disaster using MxM card
 

If you test beforehand you'll be able to trust SDHC much more.
Always record end to end none stop to assure you'll get no media errors.
In testing I'd do the opposite of what Ronnie suggests. I also do a bunch of records deleting every few clips and keep going until the card is full. You want to make sure that fragmentation won't be an issue. Do both of the above tests for every SDHC card when you purchase them should eliminate all but user error issues.

Re: Narrowly averted disaster using MxM card
 

Just been to the Samsung Memory card launch today and was given two 16gb SDHC Plus cards (class 10). The Plus cards are 100% tested before being sold. The cards can be submerged in Sea water for 24 hours and will still work, they will work after a 1.6 ton vehicle has driven over them and will still keep data safe after being subjected to a 10 Gauss magnetic force.

All sounds too good to be true, I will test my two cards out over the weekend and probably publish a video review of them - maybe I will just submerge them in my bathtub rather than drive down to the coast. A my daughters bike might be a more realistic test. As for the magnetic force, I will leave the card in front of my HiFi speaker whilst listening to Mahlers Resurrection Symphony (No 2).

Just for info, here is the Samsung press release


20th July 2011, London UK – Samsung Electronics Co., Ltd., has launched a new range of high performance SDHC/SD and micro SDHC/SD memory cards. All of the cards in Samsung’s latest memory line-up provide incredible read speeds of 24MB/s and have been designed to meet the growing need for faster data transfer from a mobile device, such as smart phone or digital camera, to a PC.

The new Samsung memory cards will be available in two categories: ‘Essential’ and ‘Plus’, providing a choice of card to suit every application.

The premium ‘Plus’ range of SDHC/SD and micro SDHC/SD memory cards have the highest available class 10 speed rating - for advanced data transfer speed and flawless transmission of full HD video – and also boast a class-leading write speed of up to 21MB/s. With data storage capacity of 8GB or 16GB, the cards are perfect for today’s memory-devouring devices and come with a 10 year limited warranty.

Samsung’s ‘Essential’ category of SDHC/SD and micro SDHC/SD memory cards have either a Class 4 or Class 6 performance rating and offer a write speed of up to 13MB/s. Available in capacities from 2GB to 16GB, the ‘Essential’ memory cards come with a 5 year limited warranty.

Extremely durable and reliable, the new Samsung memory cards have been designed to be ‘3 Proof’: Shockproof, waterproof and magnet proof - ensuring that valuable data won’t be lost, even in the harshest of environments. Shock-proof technology within the cards protects data from forceful impact and high pressure, including being crushed by a 1.6 ton vehicle, while an innovative Epoxy Moulding Compound covering provides a shield against dust and means the memory cards can withstand over 24 hours in sea water. The cards are also able to resist x-ray scanners and any type of widespread magnetic exposure.

All cards in the new line-up feature a stylish brushed aluminum finish and will be available from July 2011 in the UK. A class 10 SDHC/SD and micro SDHC/SD memory card with a massive 32GB capacity will be added to the ‘Essential’ range in September 2011.

Re: Narrowly averted disaster using MxM card
 

Maybe, but the fact is that CF flash cards are far more prone to failure due to the pin openings- moisture will find a way in. I had an interesting conversation with a Samsung official today and asked why they didn't produce CF cards. The reply was that it was a shrinking market and that SDHC cards were far more reliable.

Interesting stuff.

BTW. I have never had card failures until recently when my CF card decided to play silly pranks by rearranging data.

Alister is probably right with the claims on SxS cards, I have no doubt that they are the best available, but then at the high price they should be.

Re: Narrowly averted disaster using MxM card
 

Will these new Samsung cards work with the Ex-cameras and if so what type of adapter will be recommended? At NAB I bought one of the Hoodman Steel 32 gig cards and it seems to be solid.

Thanks

Ronnie

Re: Narrowly averted disaster using MxM card
 

I will be using the Samsung cards with my EX3, will do some tests later today, especially with overcranking. Will keep you posted here.