sdhc cards?

[355858]

hi there i currently have a d90 and was wondering if i would see any advantages to have a san disk extreme III card over my sandisk 4gb sdhc class 2 card?

if so what will i gain for it? as they are alot of money lol

 

[Philx1979]

Hell of alot faster write speeds, and i think you have a higher capacity for more images per card.

 

[355858]

oh ok, will this increase fps if it can write to the card quicker? is it best to go for say two 4gb cards or just an 8gb?

 

[andyred]

is it best to go for say two 4gb cards or just an 8gb?

Horses for courses really, sometimes 2 x smaller cards can be cheaper than 1 larger one. There is also the concern over if they get corrupted - although Scandisk appear to be good.

 

[singlespeed]

I wrote this on a CF card thread, but the principles still the same

You would only notice a difference in performance if you are actualy reaching the limit of one of the cards. If your shooting single frames and reviewing the histogram or recomposing, the image can be written to the card without causing problems (whatever write speed). Keep it on RAW to give a large amount of data to be stored. Then go for a burst of continuous shutter release and a faster card will start to show its worth.

A slow card will probably cope with a few frames before the buffer fills up and the fps starts to slow as the write speed starts governing the fps. Once the fps is being governed by the write speed, the difference between the different cards may be apparent.

If you don't need a large burst, a lesser card can be more than up to the job.


Higher read speed will show benefits when downloading the card as you could save a minute or two. As they say, time is money.

Having two 4g cards instead of one 8g means if it all goes wrong and a card dies, you may only loose half of a shoot ( if you keep swapping between the two cards). You are more likely to loose a card when its not in the camera. Choices choices

 

[mrgubby]

or having two 4Gb cards means you miss all the action while you are swapping them ......

 

[ekso]

I got eh 4gb Extreme III from Play at £12/£15 delivered. Amazon do something similar.
The cost of the 8gb or 16 was more than multiples of the 4.
I will probably get the 8gb/16 at some stage, but wait for the prices to drop....
Ekso

 

[MarkG]

The one vs two cards debate will rumble on much as the debate between camera brands will.

One big card:
+ Less worry about running out of space at an inconvenient time.
+ Not constantly swapping cards.
- More expensive than two smaller cards.
- All your eggs in one basket.

Two smaller cards:
+ Cheaper.
+ Won't lose all your work (providing you remember to swap cards regularly).
- Having to swap cards regularly.
- Swapping cards is a risk in itself (dropped/snapped cards, worn contacts, lost images due to removing cards too soon).

 

[Philx1979]

I have a 4gb Sandisk Extreme III and you have to take alot of RAW`s to run out of space!