Tech blog

This blog is for my future and past info and reviews on various tech stuff….

Phones / Phablets
Compact cameras
Various tech
Various tech stuff
Resolution and Noise
Batteries and usage
Code examples
Other stuff
Other stuff

Newer reviews can be expected to be ongoing projects, with minor additions or corrections.

Note: When I rate stuff, a 10/10 does not indicate perfect in an absolute academic sense, but as in (at least) as good as could be expected at the time, minor flaws allowed. For portable devices typically limited by the size and weight. Value for money also counts. An electronic device that got a high score in 2005, most likely would seem like pure trash ten years later….


  • Android, “Battery use”, more than meets the eye

    The “Battery Use“-app is part of the OS, and is located

    Settings > About phone > Battery use

    First here is a collage of screen-dumps (click to view) from it (see comments towards the end)


    Continue reading...


  • How to obtain good stamina on an Android phone


    1. This thread is general in nature, but based on my Xperia neo Pro.
    2. Xperia phones DO have good stamina if set up and used correctly
      I can get 4½ days of stamina WITH 3G+WiFi+Virus Scanner ON
    3. Set Brightness to 100%, and use widget “Brightness On/Off“,
      Use On in direct sunlight only.
    4. Set Screen time out to 30 sec.
    5. Use the app AdBlocker to block specific apps from data connection.
    6. Use the app WapDroid to only allow WiFi at specific geographical ‘points’. (By Cell-ID NOT gps)
    7. Have the phone at optimal position.
      Place on the desk not in the pocket while working.
    8. Exit apps if possible when you are finished.
    9. “Ads within Android apps found to consume 75% of the app’s power.”
    10. Avoid task-killers on the bloatware.
      (The repeated killing and resurrection eats a lot of battery)
    11. Avoid ‘clever’ battery-apps in the background doing more harm than good.
    12. Note that the percentages in Battery Use are based on estimates.
    13. Consider if you need background data traffic or not.
    14. The “Android System”-drainage bug!
    15. Finally I have a few tests , if the above did not do the trick.



    On general battery info and hints see this

    Continue reading...


  • Central entry point on batteries

    (at least this is my intention on how it should end and be used)

    It should give info about batteries, how the phone uses them, and (hopefully) with some good hints to how to get the most out of each battery (Life and Stamina). Many of the hints go for other hardware with Li-Ion batteries as well. Say Laptops, Toothbrushes…..


    This thread is originated from SonyEricssons Xperia phones.



    On problems with weird drops and raises: Try “Johan’s Trick” below once

    The currently best advice I can give for the usage pattern is

    Try to charge fully and deplete to about 40-50%bc

    Once in a while drain battery deep to get calibration right

    Keep phone on desk/in bag, avoid pockets, to keep cool.

    Leave phone idle while charging (e.g. while sleeping).


    Note that the ‘remaining percentage’ you see is an ESTIMATE not a measurement!


    Continue reading...


  • Ricoh CX3-CX6, Review

     Review on CX3 variants CX4, CX5 and CX6 are less trifles identical.

    A really great camera – in 2010, Still fast and with outstanding macro by 2017 (compacts) konservativ_woot
    …though a bit boxy and thick (almost 3cm thick).

    Macro examples: Dust on a dead flies eyes and subpixels from a QFHD (3840×2160) monitor

    BDM4065UC Macro crop

    Continue reading...


  • Ricoh CX1, Review

    Sorry this is Danish only – and text only (almost). For English please try version


    Et fantastisk lækkert kamera, omend det er lidt fysisk stort af et kompaktkamera.


    • + Hurtigt!
    • + Fabelagtig makro (over 4000 DPI!! Ja, kun ti bølgelængder af lys per pixel!!!)
    • + Imponerende skærm
    • + Rigtig god billedstabilisator
    • + 7 x zoom
    • + 28mm ækvivalent vidvinkel
    • + Mange muligheder for kontrol og indstillinger.
    • + Flere slags “Bracket shooting”, hvor der tages en stribe konsekutive billeder med forskellige indstillinger.
    • + High-Speed burst-mode. Op til 120 vga-billeder på 1 sekund
    • + double-shoot DR mode hvor den tager to billeder med forskelige indstillinger og merger. Godt til fx modlys.
    • + Manuelt fokus (BURDE være selvfølge hos alle…)
    • + Man har en smule manuel blænder-kontrol
    • + Efterbehandling af billeder muligt direkte i kamera, hvid-balance, lys, Kontrast, trim, ‘Skew’
    • + Digital zoom kan sættes til at klippe, og IKKE strække billedet.
    • + Vaterpas (“level”) til at fortælle om man holder kamera lodret/vandret.

    Mulighederne for kontrol og indstillinger inkluderer

    • + To komplette set af manuelle indstilling kan gemmes og hentes via ‘programhjul’
    • + Knap hvor man kan gemme en af 12 fuktioner man finder interessant.
    • + Fire funktioner af elleve kan lægges på ‘menu’ under anden knap.

    Der er dog et par ‘torne’ i rosenbusken, men jeg synes ikke de er alvorlige….

    • – Autofokus i dårligt lys.
    • – zoom, svært at lave lille ændring, lidt vel følsom kontakt.
    • – High-Speed burst-mode skriver i nyt cipa format, der ikke rigtigt PT supporteres af noget (endnu?).
    • – Video er behandlet som et stedbarn…
    • – Ikke nogen stor sensor, så begrænset lysfølsomhed. (Dårligere end de bedste, men ikke ringe)
    • – I manuel fokus kunne de godt vise i display hvad fokus afstand er
    • – eneste blænde-kontrol er at man kan tvinge den til minimum (for afstanden)
    • – eneste lukker-kontrol er at man kan sætte maksimal lukker-tid
    • – JPG filer stemples 72 DPI, uanset fokusafstand.
    • – Den indbyggede ‘skew’ opretning klipper den nye billede til funden firkant, og smider resten væk. Bug/feature?
    Continue reading...



Newer postings are in English (well sort of, bare with me, non-native…), some earlier than 2010 just blunt copies of the texts in Danish.

Collecting of old stuff started May 2015. Entries are generally attempted dated with original stamps, even if they are somewhat updated since, several reviews have been ongoing ‘projects’.