Thank You!
They seem to be there by the folder size but not listed in the directory. Recovery soft ware is planned.

MJ: Thank You. My laptop reads 540Mb in the SD card but I can see only 140 Mb of images. I did "show hidden files", so this is encouraging. I will try a USB wire them get the software.
Thank You, again.

Thank You.
Returning the SD card (SanDisk ExtremePro 32 GB) to the camera, I could see only the same photos as shown on the laptop.
Regards, BFA

Please advise me how to recover photos that are not showing on the directory of the SD card.
I took photos of a family reunion. I used an Olympus E-M5 in shutter preferred (1/125) mode with a Vivitar 383 TTL flash. The SD card is a SanDisk ExtremePro 32 GB holding less than 300Mb of jpegs taken on that camera, some of which were from the day before. For the reunion, I took test exposures and viewed them on camera with the playback button. During the afternoon, I regularly played back to check the photos. They were OK. The last four photos were with the flash off and they too appeared satisfactory.
When I moved the SD card to my HP laptop, the directory showed none of the reunion photos, while the prior photos were present. When I returned the SD card to the camera it was the same.
I would like to retrieve those pix.
Is there a recommended recovery program?
Your opinions as to what happened and remedial recommendations are requested.
Thank-You in advance.
Bruce F Anderson

The Strobonars were great line of flash units but I would imagine their trigger voltage might damage a modern camera unless tripped by a remote slave unit.

The Strobonars were great line of flash units but I would imagine their trigger voltage might damage a modern camera unless tripped by a remote slave unit.

XKE in 1961 : 3.8L I-6 cyl. DOHC, 'XK' engine w/ 3 SU carbs. Rebored +5 mm. in 1964 to 4.2L. 1968-70 US cars had dual Zenith Stromberg carbs for emissions. V-12, 5.3L replaced XK engine in 1971.

The triple does POP!
Good Luck with your show.