This camera has a few years on it. The manual does not list the max size, but only give specifics for use of a 128 MB SD card. I looked at a couple other models too and they do the same thing.

I would say your 4GB is too large, but to be absolutely certain, Pentax has a pretty good customer service department and would certainly be glad to help you. Here are contact numbers:

PENTAX Customer Care
Toll Free: (800) 877-0155
Phone: (303) 799-8000

There is also a customer web form that can be submitted. The link is on their Customer Care page.

http://www.pentaximaging.com/support/customer-care/

Thanks for using Fixya.

Hi,

This refers that the Memory Card you have used is not Compatible. Do not try to Experiment as sometime the Firmware might get affected by this.Try to use another Card . 2GB is compatible for this model.

Let me know, once done.

Hope i helped you.

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