Would I be able to use the same formula to calculate the FOV of my 18-200mm f/3.5-6.3 lens with my 1000D?
Thanks, Alan --- In [email protected], "sky2orion" <sky2or...@...> wrote: > > Hello > Yes you must calculate the effective field with the instrument where > you attach the eos1000 > example If you use a ED80 with 600mm focal length > Width of field = 57.3*( Width of CMOS chip / Instrument focal length) > Hight of field =57.3 *(Hight of CMOS chip / Instrument focal length) > > so Field's High =57.3*(14.8/600) = 1.41°=84.6 arc minutes > Filed length = 57.3*(22.2/600) =2.12°=127.2 arc minutes > the results that you enter in the given fields. > > I hope it can help you (sorry for my bad English) > > Claude > France > 46°12'N > 5°23'E > > > > --- In [email protected], "dwango121" > <arobinson121@> wrote: > > > > Hi Everyone, > > > > My first post... > > > > I have downloaded and am using 3.0.1.4 beta and I wanted to create a > > finder mark/frame for my EOS 1000D. The chip size is 22.2mm x 14.8mm. I > > entered these into Width/Height in the CCD Retangle tab but when I add > > a new finder circle on the chart it seems very small. Am I doing > > anything wrong. Do I need to tell it what scope I am using it with > > (ED80)? > > > > Thanks, > > Al > > >
