Results 1 to 15 of 15

Thread: Advantage of UWA on FF?

  1. #1

    Default Advantage of UWA on FF?

    Hi all can anybody address the question above? Besides better "IQ, and ISO" what other drastic improvements can I see if I upgrade from a 10-22 on a 1.6 crop VS a similar UWA on a FF?

    The allure of poor corner distortion and unwanted vignetting is not all that enticing, please halp kthx
    Canon 40D, 10-22, 35, 70-200
    http://theserialhobbyist.multiply.com

  2. #2
    Senior Member
    Join Date
    Jan 2005
    Location
    Pasir Ris, Singapore
    Posts
    14,002

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by munkey View Post
    Hi all can anybody address the question above? Besides better "IQ, and ISO" what other drastic improvements can I see if I upgrade from a 10-22 on a 1.6 crop VS a similar UWA on a FF?

    The allure of poor corner distortion and unwanted vignetting is not all that enticing, please halp kthx
    U get to utilise the entire lens instead of just the centre part.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  3. #3

    Default Re: Advantage of UWA on FF?

    Err true, but why do people always say FF is for UWA, 1.6 crop is for tele lenses. I can understand that with tele you get the extra reach but for UWA on FF what you get is the bad edges! pfft?
    Canon 40D, 10-22, 35, 70-200
    http://theserialhobbyist.multiply.com

  4. #4
    Senior Member
    Join Date
    Jan 2005
    Location
    Pasir Ris, Singapore
    Posts
    14,002

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by munkey View Post
    Err true, but why do people always say FF is for UWA, 1.6 crop is for tele lenses. I can understand that with tele you get the extra reach but for UWA on FF what you get is the bad edges! pfft?
    FF for UWA cos u can utilise lenses like 14mm and fisheye. 1.6X for tele cos due to the crop, a 200mm lens will be equivalent to 320mm.

    How bad are the edges? Does this look bad??

    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

  5. #5

    Default Re: Advantage of UWA on FF?

    Was that on your 17-40? How would you think the lens compares with the 10-22 on a 1.6, it is a fair comparison right? Sorry to sound so kaypoh, this is just my way of learning : d
    Canon 40D, 10-22, 35, 70-200
    http://theserialhobbyist.multiply.com

  6. #6
    Moderator ortega's Avatar
    Join Date
    Nov 2004
    Location
    Singapore, Singapore, Singapor
    Posts
    23,686
    Blog Entries
    7

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by munkey View Post
    Hi all can anybody address the question above? Besides better "IQ, and ISO" what other drastic improvements can I see if I upgrade from a 10-22 on a 1.6 crop VS a similar UWA on a FF?

    The allure of poor corner distortion and unwanted vignetting is not all that enticing, please halp kthx
    it is said mainly because

    1. you lose out with WA lenses with the crop factor ( your once swee 17mm UWA becomes just another WA)

    2. with the crop factor your 200 f2.8 suddenly becomes a 300 f2.8 and your once upon a time 1:1 macro becomes a 1.5:1 macro

  7. #7
    Senior Member denniskee's Avatar
    Join Date
    Oct 2003
    Location
    bukit batok
    Posts
    5,468

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by ortega View Post
    and your once upon a time 1:1 macro becomes a 1.5:1 macro
    hi otega,

    i thought 1:1 means, 3.6cm (horizontal line) in real life is captured as 3.6cm on sensor, saw, using a canon 100mm macro lens at min focus dist.

    as such, even if u use it on a corp factor camera body with exact parameter as above, it still does 1:1, but in this case, due to smaller sensor, the lens still sees 3.6cm in real life (FF lens), but only able to capture 2.25cm(typo error) (same horizontal line as above) on the sensor?

    i not into closeup photography, so not sure on this.
    Last edited by denniskee; 16th February 2009 at 11:26 AM.
    photography makes one sees things from all angles.

  8. #8
    Senior Member giantcanopy's Avatar
    Join Date
    Feb 2007
    Location
    SG
    Posts
    6,232

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by denniskee View Post
    hi otega,

    i thought 1:1 means, 3.6cm (horizontal line) in real life is captured as 3.6cm on sensor, saw, using a canon 100mm macro lens at min focus dist.

    as such, even if u use it on a corp factor camera body with exact parameter as above, it still does 1:1, but in this case, due to smaller sensor, the lens still sees 3.6cm in real life (FF lens), but only able to capture 22.5cm (same horizontal line as above) on the sensor?

    i not into closeup photography, so not sure on this.
    It will still be 3.6 cm on the sensor, but with the added cropping of the periphery on a DX sensor, it seemed you got more magnification out of the macro lens

    Ryan

  9. #9
    Senior Member denniskee's Avatar
    Join Date
    Oct 2003
    Location
    bukit batok
    Posts
    5,468

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by giantcanopy View Post
    It will still be 3.6 cm on the sensor, but with the added cropping of the periphery on a DX sensor, it seemed you got more magnification out of the macro lens

    Ryan
    now i more confused, if it is still 3.6 cm physically on the sensor, but sensor of 1.6x crop camera is only 2.25cm wide (agar agar), how to capture something thats bigger than its physical size. remember, it is 1:1 macro lens we talking here.

    if it is not physically 3.6cm om the 1.6x crop sensor, that means it is shrunk, so the lens no longer produce 1:1 effect?

    if it is 3.6cm on 3.6cm on the 1.6x crop sensor, than wouldnt that produce the exact same picture as the FF camera?
    photography makes one sees things from all angles.

  10. #10
    Senior Member denniskee's Avatar
    Join Date
    Oct 2003
    Location
    bukit batok
    Posts
    5,468

    Default Re: Advantage of UWA on FF?

    sorry for the OT hor, TS. will start another thread to discuss this.
    photography makes one sees things from all angles.

  11. #11

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by denniskee View Post
    now i more confused, if it is still 3.6 cm physically on the sensor, but sensor of 1.6x crop camera is only 2.25cm wide (agar agar), how to capture something thats bigger than its physical size. remember, it is 1:1 macro lens we talking here.

    if it is not physically 3.6cm om the 1.6x crop sensor, that means it is shrunk, so the lens no longer produce 1:1 effect?

    if it is 3.6cm on 3.6cm on the 1.6x crop sensor, than wouldnt that produce the exact same picture as the FF camera?
    No. On a crop camera, it would crop the image. So it's still 3.6cm, but now you're only "seeing" a smaller area.
    Alpha

  12. #12
    Senior Member denniskee's Avatar
    Join Date
    Oct 2003
    Location
    bukit batok
    Posts
    5,468

    Default Re: Advantage of UWA on FF?

    started a new thread to prevent oting here.

    http://www.clubsnap.com/forums/showt...88#post4809088
    photography makes one sees things from all angles.

  13. #13
    Senior Member giantcanopy's Avatar
    Join Date
    Feb 2007
    Location
    SG
    Posts
    6,232

    Default Re: Advantage of UWA on FF?

    There is no confusion. The flange - focusing distance is still the same for DX / FX regardless of sensor size, and the smaller sensor does just that - it provides a cropped image, be it macro, wide angle, telephoto etc.

    If the subject is 10mm, it will be 10mm on the FX and 10mm on the DX, just that comparatively it is larger on the DX and in a way a magnification / cropping.

    If the subject is 36mm, it will be 36mm on the FX, and 36mm on DX, just that u wun see the whole of the 36mm on DX, but rather the cropped part at the centre - and hence the seemingly increase in magnification as a result of crop.

    Ryan

  14. #14

    Default Re: Advantage of UWA on FF?

    Wow major OT there. lol SO can I assume that with the 16/17mm on FF vs 10-22 on 1.6x there is NO significant Advantage? Besides the better IQ, ISO that comes with the camera of course.
    Canon 40D, 10-22, 35, 70-200
    http://theserialhobbyist.multiply.com

  15. #15
    Senior Member
    Join Date
    Jan 2005
    Location
    Pasir Ris, Singapore
    Posts
    14,002

    Default Re: Advantage of UWA on FF?

    Quote Originally Posted by munkey View Post
    Was that on your 17-40? How would you think the lens compares with the 10-22 on a 1.6, it is a fair comparison right? Sorry to sound so kaypoh, this is just my way of learning : d
    Yes it's my 17-40 at 17mm end. 10-22 on a 1.6x will be similar to a 16-35 on FF. As 10-22 is EF-S, 1.6x users can't go any wider unless they use 3rd party ones but will cause vignetting on the corners.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •