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PENTAX Optio A20

alaTest has collected and analyzed 110 reviews from magazines and websites. Comments about the design and responsiveness are on the whole positive. The image quality and portability are also appreciated. There are some mixed comments about the battery, and some have doubts about the reliability and features.

usability, portability, image quality, responsiveness, design

performance, viewfinder, exposure, features, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Digital Compact Cameras the PENTAX Optio A20 is awarded an overall alaScore™ of 84/100 = Very good quality.

Review analysis

(Based on 110 reviews)

Expert Reviews  

User Reviews  

Showing 26 review(s)

Expert Reviews User Reviews
Showing 1 - 10 of 26 Show Reviews: in English | in other languages (41)

Expert review by:

Pentax Optio A20


To be honest, when I got the Pentax A20 for review I expected it to be a simple point-and-shoot ultra-compact with probably a few manual exposure features, like most higher-end ultra-compacts out there. But then again, this wasn't the first time my...

In a case like this, its easy to forget that at the end of the day, the Pentax Optio A20 is still an ultra-compact, and with that size come a lot of limitations. Comparing it directly to the likes of the mid-range Canon Powershots would be ridiculous,...

Expert review by:

Pentax Optio A20


If you're new to digital photography you may wish to read the DigitalPhotography Glossary before diving into this article (it may helpyou understand some of the terms used).

Good resolution, natural accurate color, subtle processing ; Subtle noise reduction holds onto detail higher up the ISO scale ; Excellent all-metal construction ; Good white balance ; Good flash performance ; Very compact ; Shake Reduction ; Useful...

Slow focus ; Fairly high shutter lag ; Slow flash recycling ; Shake Reduction not as reliable as some competitors ; Noise visible even at ISO 64, especially in low light, very noisy at higher ISOs (see above, however) ; Images a little soft - and not...

To quote from my own review of the A10, 'As someone who first got hooked on photography with a 30 year old Pentax and who has had a soft spot for the brand ever since, I just hope the next generation of Optio can build on the A10's undoubted strengths,...

Expert review by:

Test: Pentax Optio A20


Test: Pentax Optio A2019161PentaxOptio A20The Pentax Optio A20 (street $300) doesn't look all that special on the outside, but beauty is on the inside, and this 3x zoom (38-113mm equivalent), 10MP point-and-shoot has a few features that really stand...


Expert review by:

Pentax Optio A20


Pentax launches the new Pentax Optio A20, a compact digital camera featuring 10.0 effective Megapixels and a fine, high-quality image. The Pentax A20 digital compact camera is the latest model in our high-grade Optio A series. In addition to offering...

Consumer review by:

Owners Opinion: Pentax Optio A20 (Advocato, 22 Jul 07)


Consumer review by:

Pentax Optio A20


It takes great pictures. It is small. It has a decent Zoom

I wish it had a shade provision for bright lite shots

Consumer review by:

Owners Opinion: Pentax Optio A20 (*isteve, 13 Jan 07)


This camera has a lot of excellent features for the price and its pretty customisable. Overall image quality is good with excellent colour and lots of detail. I didnt find AF to be too slow when set to centre point only, and the face recognition seems...

Noise is visible even at ISO100, though there is very little detail loss. There is also some CA and softness at the edges at wideangle but its better at longer focal lengths. Generally the noise suppression seems to favour detail over NR, but there is...

Consumer review by:

Owners Opinion: Pentax Optio A20 (Aiolos, 9 Jan 07)


Used a lot of time comparing different cameras in ultra-compact class and decided to buy Pentax A20. I must say that I have been statisfied with this camera. I think the sharpness and detail in this camera are excellent. I also like the wide manual...

Many reviews point that this camera has a slow auto-focusing speed, and it did feel like that at first, but when I changed the focusing mode to spot the focusing time quickened dramatically ; Battery life could also be better, but I'm thinking of...

Consumer review by:

Amazon review summary for PENTAX Optio A20


alaTest has collected and analyzed 25 user reviews of PENTAX Optio A20 from The average user rating for this product is 4.2/5, compared to an average user rating of 4.0/5 for other Digital Compact Cameras on

image quality, usability, design, performance, focus


92% of the reviews on give this product a positive rating.

This summary is based on the product: Pentax Optio A20 10MP Digital Camera with 3x Optical Zoom and Shake Reduction

Consumer review by:

Can't beat it


Very happy with this camera. Glad I waited a year to buy. 10 Megapixel for this price is amazing. And Newegg just keeps getting faster and faster with their shipping.

1233 pics at maximum quality setting on a 4GB memory card ; 3.1 hrs video

Finding a case for it

Product Specifications

The flagship of the Optio digital camera line, the high-end PENTAX Optio A20 offers the pinnacle of PENTAX compact digital photography in an ultra-compact aluminum alloy body. With a 10.0 megapixel CCD, a 3X optical zoom lens, built in Shake Reduction and Tracking AF, the Optio A20 offers a versatile manual-shooting mode. Add to this, a 232,000 pixel 2.5 inch LCD and Movie mode MPEG-4 DivX (640 x 480) capture at 30fps and guaranteed video playback on all DivX certified devices. The convenient charging cradle recharges a Lithium-ion battery in the camera.

Audio Input

Microphone Operation Mode:Mono
Microphone Technology:Electret condenser


Battery Form Factor:Manufacturer specific
Manufacturer Battery Name:Pentax D-Li8

Camera Flash

Red Eye Reduction: Yes
Type:Built-in flash

Digital Camera

Supported Flash Memory:MultiMediaCard / SD Memory Card / SDHC Memory Card/SD Memory Card / SDHC Memory Card

Dimensions & Weight


Display (Projector)

Diagonal Size:2.5in
Diagonal Size (metric):6.4cm
Display Form Factor:Built-in
Technology:TFT active matrix
Type:LCD display

Exposure Parameters

Shooting Programs:Candle / Flower / Food / Frame composition / Landscape / Night scene / Pet / Portrait mode / Sports mode / Surf & snow / Text


Packaged Quantity:1
Product Line:Pentax Optio

Lens System

Lens Aperture:F/2.8-5.4
Max Focal Length:23.7mm
Min Focal Length:7.9mm
Optical Zoom:3
Type:Zoom lens

Optical Sensor

Optical Sensor Size:1/1.8"
Optical Sensor Size (metric):14.1 mm ( 1/1.8 ) / 14.1 mm ( 1/1.8" )
Optical Sensor Type:CCD
Sensor Resolution:10Megapixel

Optical System

Built-in Optical Image Stabilizer: Yes
Image Stabilizer:Optical (image sensor shift mechanism)

Storage Floppy Drive

Type: None

Video Input

Digital Video Format:MPEG-4
Digital Zoom:4
Face Detection: Yes
ISO (Max):1600
Light Sensitivity:ISO 100 / ISO 1600 / ISO 200 / ISO 400 / ISO 64 / ISO 800 / ISO auto
Shooting Modes:Frame movie mode
Special Effects:Black & White / Black & White Blue filter / Black & White Green filter / Black & White Red filter / Illustration / Sepia / Slim / Soft
Still Image Format:JPEG
Type:Digital camera


Viewfinder Type: None