You can cut and paste my comments on notepad and save inside
your computer for easy reference.
You should expericne yourself to see if my comments are true.
remember. when doing testing of at least 2 components you have to
keep all the other factors a constant. light one factor is one very
important factor that you will have to keep very constant when you
compare.
Cathay is expnsive. unless some dead on item you can only get
there, other shops at funan and one ot two only repuata\ted ones at
simlim you can try, definitely cheaper.
http://postimg.org/image/b4udx0aqt/
checked exif data aperture f/1.8 speed 1/160 iso400 50mm
D800E
for full body shot unless the light is really that bad the one
possible main reason why people want to shoot at f/1.8 is the mind
thing. you got a big aperture fast lens, so must shoot at the max
aperture. shooter could have raised the iso (say to iso 800/1600 -
trust me D800E i ahve seen full res sample comparison online
reviews indicting no post processing usable iso in this rnge for
D800/E), and/ or also decrase shutter to 1/80, 1/100 so
that he can stop down the aperture to get more of the subjcet in
forcus. is oaky to take his time subject is not going anywhere and
try to stay still for a secon or two 1/80 can still freeze the
moment. also the guy edited the photo with CS6. and looking the at
exposure and color he trying to blow out the backdrop to give the
whole photo a profesional artistic effect. but the whole picture
seems overly filtered. a contrast between subject and backdrop but
dont look right. maybe he can use a reflector to reflect some fo
the backdrop light onto the subject.
there is no fixed way it should be done. composition can be
infomred and taught - but mnay people will produce different
results meanwhile. many tried to copy what others do but mostly
only resutls in gahbra! Learn to identify the worng things on those
photos and try not to do the same next time you do shoot. its the
same principle and errors as what you have done in your first post
those photos. worn understanding of the basic priciple execution,
composition, picture qulity over filtered so on...