Problems of Wide conversion lens


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KCYong

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Jun 18, 2008
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#1
I have bought a 0.45x wide conversion lens
attach it to my 18-55mm lens
the pictures a little similar to fish eye's images~~
but cannot focus all the things
as i know~wide angle lens hav greater dop~~
so how to solve my mistake?


and vignetting at 18mm T.T

and look for a lot of threads
it's seem not so worthy to buy
what do u think? sell it?

i need a wide angle lens for landscape~can guide?
 

catchlights

Moderator
Staff member
Sep 27, 2004
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Punggol, Singapore
www.foto-u.com
#5
I have bought a 0.45x wide conversion lens
attach it to my 18-55mm lens
the pictures a little similar to fish eye's images~~
but cannot focus all the things
as i know~wide angle lens hav greater dop~~
so how to solve my mistake?


and vignetting at 18mm T.T

and look for a lot of threads
it's seem not so worthy to buy
what do u think? sell it?

i need a wide angle lens for landscape~can guide?
treat it like you have a Holga Lens on your DSLR
 

denniskee

Senior Member
Oct 26, 2003
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#7
1) wide angle converter lens are design for smaller sensor, like compact digital cameras and video cameras.

2) so far, what i have tested, oly 0.7x wcon and the Kodak SCHNEIDER-KREUZNACH XENAR 0.7X is best in the market with their 4 elements design.
most in the market has only 2 elements, has the bad image quality.

u can refer to this thread for other converters on compact cameras

http://www.clubsnap.com/forums/showthread.php?t=477934&highlight=wide+angle+converter
 

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pinholecam

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Staff member
Jul 23, 2007
10,944
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#8
I have bought a 0.45x wide conversion lens
attach it to my 18-55mm lens
the pictures a little similar to fish eye's images~~
but cannot focus all the things
as i know~wide angle lens hav greater dop~~
so how to solve my mistake?


and vignetting at 18mm T.T

and look for a lot of threads
it's seem not so worthy to buy
what do u think? sell it?

i need a wide angle lens for landscape~can guide?
Distortion has a lot to do with the converter design (and usually price). Can't do much if the converter you now have has quite a bit of distortion. Only solution is to compose around this limitation.

Usually , sharpness in on the centre only. It helps to stop down (and I mean real down like f11 or higher) the aperture, but even then it depends on quality of the converter. So solution is to stop down (probably use a tripod) and/or compose such that area of interest is mainly in the center.

Vignetting at 18mm, no solution to that, its a physical limitation. Either zoom out a little to avoid, crop or compose around it.
 

B-setting

Senior Member
Jul 16, 2004
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#9
but the kit lens at 18mm is wide enough already? :dunno:
 

KCYong

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Jun 18, 2008
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#10
For me after playing with my 18-55 a period of time~
it is not enough for me for landscape shots already~~~

erm thx for helps
and need more conmments of shooting better landscapes

Sorry what is "Holga Lens" ? :)

and who people hav any wide angle lens?
introduce urs here
the prices and the quility ^^thx
 

zoossh

Senior Member
Nov 29, 2005
8,725
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Singapore
#11
For me after playing with my 18-55 a period of time~
it is not enough for me for landscape shots already~~~

erm thx for helps
and need more conmments of shooting better landscapes

Sorry what is "Holga Lens" ? :)

and who people hav any wide angle lens?
introduce urs here
the prices and the quility ^^thx
in the first place, what is your camera body? compact cam or DSLR? which brand and model?

this is my half-way done thread on lenses... got a bit on wide angle lenses on 1.5x crop factor DSLR
http://www.clubsnap.com/forums/showthread.php?t=461948

holga is a classic hong kong made toy camera. it is used to describe an effect that appears as if you are shooting through a window pane, showing distortion, partial area blurring, light fall-off or various defects of poor optical quality but was seen as an artistic alternative. this is often used for creative urban still or candids that often describe a mood and sometimes motion and where details are not that important, but not that suitable/commonly used for standard landscape and portraits where details are essential elements.
 

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KCYong

New Member
Jun 18, 2008
188
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Singapore
#12
thx for ur sharing ^^

mine is d60 with 18-55 only

and hope CSer can share what wide lens u r using and how do take ur landscape shots

thx :)
 

zoossh

Senior Member
Nov 29, 2005
8,725
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0
Singapore
#13
thx for ur sharing ^^

mine is d60 with 18-55 only

and hope CSer can share what wide lens u r using and how do take ur landscape shots

thx :)
the best is nikkor 14-24mm FX or 12-24mm DX at a price. widest rectilinear is sigma 10-20mm DX, anything wider is fisheye for nikon bodies. best budget recommended is the new tokina 11-16mm f/2.8 DX.

apart from my thread above, you can also read KRW
http://www.kenrockwell.com/tech/how-to-use-ultra-wide-lenses.htm

your question on landscape is quite vast. techniques varies and you got to be specific. if your concern is wide angle lens + night-citiscape, try good timing/lighting (evening) and long exposure. basic composition with a good and big subject of interest is also paramount. the rest got to ask the real experts who really does nightscape as i dun.
 

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