Digital picture frames are one of the hottest new tech trends this holiday season. After all, why use an old school picture frame that only shows on picture at a time, when you can display an entire slide show, and let your frame double as a photo album? One aspect of digital picture frames that cannot be ignored is the latest hit, digital picture frame keychains, for displaying photos on the go.

If your find yourself shopping for a shutterbug, new mom or dad, or grandparent this season, you probably already know how much they love to show off their latest pictures. And what easier way to do so than with a small keychain that can hold almost 200 photos?

Digital photo frames are great, but typically, the lower priced ones have bad screen quality and lack the features that make a digital frame really interesting. One of the features you don’t usually see on lower priced digital frames is Wi-Fi.

A company called eStarling has introduced a new digital photo frame for the holiday season that retails for $99.99 and offers features like a 7-inch LCD with a 480 x 234 resolution and integrated 802.11b/g Wi-Fi that support several security protocols.

Looking like typical Samsung LCD digital photo frames, these have an interesting and more useful feature. You can use them as a secondary PC monitor and you won’t need a special video card. The 8-Inch Samsung SPF-85H LCD will cost you $142 and 10-inch Samsung SPF-105P LCD costs $204.

Thanks to some hocus pocus called UbiSync PC, you can display computer imagery on them via the USB port. The 8-inch version will give you 800×600 resolution, while the 10-inch has a 1024×600 screen. Both models offer 1GB of internal image storage and a memory card slot if you want to use them as a plain old digital photo frame. Pretty cool.

Digital Foci is rolling out another new digital picture frame to the masses which is reportedly the highest pixel density frame on the market currently. It is called the Image Moments 6 and you’ll find it pricing around $150.

The Digital Foci Image Moments 6 sports a 5.7-inch VGA LCD screen with a pixel density of some 140 ppi. It is built into a two-tone chrome finish and can play photos, video and music files from multiple sources at the same time, though these sources are via internal memory and inserted memory cards.

Digital photo frame developer Smartpants has veiled what it says is the world’s largest, at the moment, WiFi digital picture frame. It is known as the SP3200WF and there is no pricing or availability information as of you.

The SP3200WF from Smartpants sports a 32-inch picture frame which is 16:9 widescreen and sports a resolution of 1366 x 768. It syncs to a PC wirelessly and includes 256MB of internal memory as well as optional memory card support. It is also Windows Live friendly, working with Microsoft’s Windows Live Photo Gallery application to share and view photos online or directly on the frame.

Digital Foci, which first announced its Digital Foci Pocket Album OLED Series back at CES, said today the digital keychain photo viewers are now available at retail. The Pocket Album OLED 1.5 will run you around $50.

The Digital Foci Album OLED 1.5 sports a 1.5-inch OLED screen with a contrast ratio of 1,000:1. It has enough internal memory to hold around 124 photos, which are loaded through USB. USB also handles the charging of this keychain, which is said to have a battery life around five hours.

Transcend just unveiled it’s new and attractive Digital Photo Frame, known as the T.photo 720, which doesn’t exactly roll off the tongue. It boasts a sharp high-resolution (800×480) TFT panel with 2GB of internal memory. The device also sports several new features, like the MyShow custom slideshow creator, Automatic Orientation Sensor for landscape or portrait viewing, and NaturaTone intelligent skin color enhancement that will give you superb image quality.

Some other features would be a desktop clock and calendar, clock/radio, and MP3 player and alarm clock. No word on pricing or availability yet, but it’s sure to be popular.

Kodak’s latest digital picture frame is one sporting a touch sensitive control for navigating images. It is called the EasyShare P520 Digital Frame and it prices around $80.

The P520, on sale in September, is built around its five-inch screen. Chief among features is the “Quick Touch Border,” a function which lets you navigate stored photos with a touch or slide of your finger. Memory is expandable via the SD slot and one can also plug in a USB stick for photo viewing. Two color-coordinated interchangeable mattes – red and sliver - and photo management software are also included.

Kodak

A Chinese electronics manufacturer named Strongking is promoting a new digital photo frame which looks like an eyeball. It is called the Strongking GK858 DPF - no word on pricing or American availability.

The Strongking GK858 DPF sports small screen sizes of 1.5- and 1.8-inches, meaning this device itself is relatively small while sprouting a resolution of 128 x 128 or 160 x 128. It can display JPEG and BMP photos and has just 16MB of internal memory. There doesn’t look to be any memory card slots, so don’t plan on storing too many photos.

Nextar is introducing a couple of unusual digital frame designs for those seeking something unique, or scary, to share with their loved ones. The new Nextar Castle and Carriage frames price at around $50 each.

The Nextar Castle and Carriage frames sport 3.5-inch TFT LCD displays framed by either a storybook castle or a pumpkin carriage. Beyond the cutesy looks, these frames function much the same way other typical frames do. They sport a flash media card slot for SD, MMC or Memory Stick cards of up to 2GB capacity and support most types of JPEG files.

Parrot, normally known for its Bluetooth accessories, is adding a new, more stylish product to its line up - a Bluetooth-enabled digital picture frame. The new Parrot Digital Photo Frame by Andrée Putman prices at around $450.

The Parrot Digital Photo Frame by Andrée Putman is the first in a line of new, designer-style products for the company. It is described as being designed by “internationally acclaimed French designer and interior architect, Andree Putman - the Coco Chanel of French interior design” It sports a seven-inch screen and uses Bluetooth wireless technology so you can transfer photos directly from a device such as a mobile phone.

Kodak is introducing some new wireless digital frames which are Internet-connected for display Web-based content. These new frames - the Kodak EASYSHARE W1020 and W820 Wireless Digital Frames - will be available later this year at a yet to be anounced price.

The  Kodak EASYSHARE W1020 and W820 Wireless Digital Frames allow consumers to wirelessly connect through the Internet to photo-sharing sites including Kodak Gallery and Flickr and Internet content manager FrameChannel. These 10- and 8-inch frames allow one to view photos from the selected photo sites, as well as letting one access through some 200 FrameChannel feeds the latest news, weather, traffic, sports scores and more.

D-Link, which first announced its new DSM-210 Internet-enabled picture frame at CES 2008, said today this product is finally ready for retail. The D-Link 10″ Wireless Internet Photo Frame (DSM-210) prices at around $250.

The D-Link 10″ Wireless Internet Photo Frame (DSM-210), besides being your typical digital picture frame, also makes use of a wireless 802.11 connection to load Internet content onto its display. This content, brought over from a company called FrameChannel, draws from over 400 “channels” such as news, weather, sports, trivia, and Really Simple Syndication (RSS) feeds.

With Father’s Day in just a few days Nextar, a consumer electronics company, announced a digital picture frame which is already available at retail. It is called the Nextar N3-505 and you’ll find it running around $50.

The Nextar N3-505 is a 3.5-inch digital picture frame set in a black wood frame. The display is a 262k color TFT QVGA display with a resolution of 320 x 240. The frame itself includes a magnetic stand so it can be adjusted for vertical or horizontal photo viewing.

Viewsonic has a bunch of new digital picture frames coming your way which will saturate a market which already seems to have too many of this type of product. The company is specifically rolling out 10 customizable which will range in size from 7- to 10-inches and price from around $140 to $180 or more, depending upon the specific model.

Viewsonic says its new digital frames - the 10-inch DPX1002, 8-inch DPX802WD, DPX802WD-BW and DPX802BSL-BW and 7-inch DPX702BSL-BW, DPX702WD-BW and DPX702WD feature interchangeable bezels - including wood, black and silver, or black and white. All come standard with 256MB of internal memory, can have photos uploaded to them through a variety of methods and have a built-in battery for wire-free environments.