Therearetwoverygoodwebsitesforreviewinglens.
http://www.photozone.de/
http://photodo.com/
Theybothhavelongerhistorytoreviewlensthandpreview.comandtheyalsobothhavemorelensreviewedthandpreview.com.Theybothhavemoretechniqueresultsdonethandpreview.com.Theyhavedistortion,vignetting,MTF(resolution)(modulationtransferfunction),chromaticaberrationsetc.inbothnumbersandgraphforms.dpreview.comonl...[閱讀全文]
博文
(2009-01-09 08:34:27)
(2009-01-07 10:32:14)
(2009-01-07 07:03:09)
(2009-01-04 09:51:59)
OriginallyIthoughtthelargersizewillincreasetheresolutionuploadedfromtinypic.com.Iwaswrong,thetwopreviousfileshadalmostsimilarsizes:30kbwithsizeseither640x320or1024x728pixels.Itwasprettyugly.Hopeitis272kb.
[閱讀全文]
(2009-01-03 15:10:07)
(2009-01-03 14:51:26)
(2009-01-03 14:32:45)
Rockfish,alsoknownasstonefish,livesinthecoastregionofIndo-Pacificoceans.Itsnameisfromitsbehaviorofcamouflagingasrocks.Itispoisonousorfataltohuman.Inthepicture,youcouldseeithasabaitconnectingtheirnose(Idon'tknowifthisisthepropertermforfish)byastringtoluresomeotherfish.Therockfishinthepicturesisabout10to15cmlong.
[閱讀全文]
(2009-01-03 13:24:51)
Hummingbirdgetstheirnamefromtheymakesomesoundslikehum.Recentlyonthewebsomescientistsreportedtheygotthesimilarsoundfromvibratingtheirfeatherssohummingbirdsmightnotsingfromtheirvocalregionbutfromtheirfeather.Hummingbirdisaverysmallbird.Theyrangefrom5to22cminlengthweighing2to25gdependingonitsdifferentspecies.Theirwingscanflap15-80timespersecond,thoughIthoughtitcouldbehigher(Iused1/500secondandcouldno...[閱讀全文]
(2009-01-02 09:22:04)
GooseberryJellyfishisverysmall,about0.5-2cmindiameter(inthesepictures,mostlytheywereunder1cmindiameter).Theyaretransparent.Occasionally,theyshowcolorfulsparkswithvisuallight. [閱讀全文]
(2009-01-02 08:28:46)
