the human eye


Status
Not open for further replies.
Jun 13, 2003
490
0
0
32
Visit site
#1
the human eye can be compared to the lens of a cam....if so..
what would be the "specs" for the eye ?

f/? to f/?
cont. AF ?
matrix metering?
 

blurblock

Senior Member
May 30, 2003
3,827
0
0
ytphoto.clubsnap.org
#2
acetylcholine said:
the human eye can be compared to the lens of a cam....if so..
what would be the "specs" for the eye ?

f/? to f/?
cont. AF ?
matrix metering?
f/1 ;P..... mainly spot metering with ultra fast Auto Focus.
 

Jun 13, 2003
490
0
0
32
Visit site
#3
blurblock said:
f/1 ;P..... mainly spot metering with ultra fast Auto Focus.
spot meter ?
erm
if someone is standing in front of a bright background i cant see a thing man
a sill at best..
i think center meter at best ??

as for AF, god-speed. USM ? pui ( no insult to canon users) more keng than USM :p

but how do u explain some ppl short sighted,long sighted, etc?

'lens' quality no good ? ahahhaha
 

Aton

New Member
Jan 29, 2004
89
0
0
Bedok South
#5
acetylcholine said:
spot meter ?
erm
if someone is standing in front of a bright background i cant see a thing man
a sill at best..
i think center meter at best ??

as for AF, god-speed. USM ? pui ( no insult to canon users) more keng than USM :p

but how do u explain some ppl short sighted,long sighted, etc?

'lens' quality no good ? ahahhaha


That because someone forgot the extension tube inside the eyes. :blah:

thats for short sighted


They only got have a pair of teles for cannot focus on near object.

Long sighted
 

xmen1977

New Member
Jun 30, 2002
944
0
0
40
CCK
xmen1977.clubsnap.org
#6
acetylcholine said:
the human eye can be compared to the lens of a cam....if so..
what would be the "specs" for the eye ?

f/? to f/?
cont. AF ?
matrix metering?

i would say the world's best lens u ever get

just one lens to let u see near, nearer or nearest and far, further or furthest :D
 

zaren

Moderator
Staff member
Oct 27, 2003
10,961
29
48
#7
specifications for the eye:

focal length: 50mm
aperture: f1 to f8
close focussing distance: 150mm
instantaneous continuous autofocus
automatic exposure compensation
resolving power: 8lp/mm
no chromatic aberrations
no distortion
automatic tilt-shift for perspective control
uniform centre to edge sharpness
built-in image stabiliser and lens cleaner
matrix metering
can meter in low light conditions down to EV 2
size: 25mm diameter
weight: 40g
price: free
 

Mar 13, 2004
458
0
16
Bishan
deadpoetscave.com
#8
zaren said:
specifications for the eye:

focal length: 50mm
aperture: f1 to f8
close focussing distance: 150mm
instantaneous continuous autofocus
automatic exposure compensation
resolving power: 8lp/mm
no chromatic aberrations
no distortion
automatic tilt-shift for perspective control
uniform centre to edge sharpness
built-in image stabiliser and lens cleaner
matrix metering
can meter in low light conditions down to EV 2
size: 25mm diameter
weight: 40g
price: free
Comes with "Never Lost" lens cap and fully adjustable lens hood H(ands)Ds-02
:D
 

jimtong

Senior Member
May 8, 2002
1,528
0
36
Singapore
jimmyto.ng
#9
Also no flare problem

always in shuttle priority mode (bulb)???
with pupil of eye (apperture) changing size frequently to fit the ambience light.. in dark room, pupil become big, in bright light pupil become small...

it does not come with macro capability... need to use microsope or manifying glass add on...

can use all brand of telescope / bino for tele-zoom

price? priceless...
 

yowch

New Member
Oct 16, 2002
1,044
0
0
44
Singapore, Redhill
Visit site
#11
The eye is also a 'film'/'sensor'. Possibly ISO 50 to 12800+++. We see at about 1/50 shutter speed (That's our PAL TV refresh rate) and we have no problem seeing in moon lit lanscape. Our cameras on highest ISO film at largest aperture probably needs a few seconds of exposure to get what our eyes sees. But we are not infra and ultra sensitive, unlike some film and some sensor.
 

yowch

New Member
Oct 16, 2002
1,044
0
0
44
Singapore, Redhill
Visit site
#13
I beleive that the eye is not spot, centre, average or matrix metering. It can actually meter differently and expose differently for different locations on the sensor! Image auto ISO on each pixel, and yet still coming with sensible images!
 

Jia Wang

New Member
Feb 20, 2004
1,306
0
0
43
Starry Night
www.pbase.com
#14
zaren said:
specifications for the eye:

focal length: 50mm
aperture: f1 to f8
close focussing distance: 150mm
instantaneous continuous autofocus
automatic exposure compensation
resolving power: 8lp/mm
no chromatic aberrations
no distortion
automatic tilt-shift for perspective control
uniform centre to edge sharpness
built-in image stabiliser and lens cleaner
matrix metering
can meter in low light conditions down to EV 2
size: 25mm diameter
weight: 40g
price: free

:bsmilie: :bsmilie: :bsmilie: :bsmilie: :bsmilie: :thumbsup: :thumbsup: :thumbsup:
 

Mar 13, 2004
458
0
16
Bishan
deadpoetscave.com
#15
Hmmm... thinking about the eye as a lens, then some of the stuff we've mentioned (e.g. metering, shutter speed) actually falls under the camera body's functions... which would be equivalent to our brains!
 

Jun 13, 2003
490
0
0
32
Visit site
#16
ok...
compiling the specs

Eye

Aperture: anywhere from f/1 to f16
Cont AF
Matrix or centre metering
ISO: 50 to 12800
Range: 50mm to infinity
Resolving power: 4 micrometers
automatic exposure compensation
size: 25mm diameter
weight: 40g
price: free

no chromatic aberrations
no distortion
automatic tilt-shift for perspective control
uniform centre to edge sharpness
built-in image stabiliser, lens cleaner and lens hood.
auto repair systems
twin lenses for 3D imaging
 

Status
Not open for further replies.
Top Bottom