Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: full frame

  1. #1

    Cool full frame

    wat the down side of using a full frame lens on a non full frame body?

  2. #2
    Member MrKami's Avatar
    Join Date
    Oct 2009
    Location
    Bukit Batok
    Posts
    77

    Default Re: full frame

    for me i think there is not much difference. anyway if you are considering upgrading to a FF next time, you should get the FF lens. i started using FF lens since i bought my first canon cam 50D.
    My Passion, My Dedication, My Photography

  3. #3

    Default Re: full frame

    No problem at all since the lens which covers full-frame will completely cover a APS-C sensor. It does the other way round though.

  4. #4
    Senior Member Numnumball's Avatar
    Join Date
    Mar 2009
    Location
    Central
    Posts
    13,914

    Default Re: full frame

    Quote Originally Posted by james8110 View Post
    wat the down side of using a full frame lens on a non full frame body?
    Field of view changes, for a FF lens to use on a APS-C crop sensor you will end up with a narrower view as the lens is meant for FF: 35mm (36*24).

    Example : To get the same field of view as a 24mm lens on the full frame camera, you will need a shorter focal length lens (e.g. 16mm for nikon factor in the crop of 1.5) when used with the APS-C crop sensor. In fact if you put that same 24mm lens on a APS-C crop sensor, the angle of view decreases to the extent that it's now the same as that of a 36mm lens mounted on a full frame camera.

    Hope this clarifies

    Upside is most APC sensor will stand to benefit from the sweet spot (sharpness) that FF offers since only the center portion of the FF lens is used.
    I turned PRO in diaper chg!
    My Flickr|My Son

  5. #5
    Senior Member ZerocoolAstra's Avatar
    Join Date
    Mar 2008
    Location
    rainy Singapore
    Posts
    9,523

    Default Re: full frame

    Quote Originally Posted by james8110 View Post
    wat the down side of using a full frame lens on a non full frame body?
    the downside is you pay extra money and carry extra weight for hardly any benefit

    but it's "future-proof" as claimed by many, in case you decide to buy a full frame camera when the prices fall below $2000... hehehehehe... i ain't holding my breath. DX works just fine for me!
    Exploring! :)

  6. #6

    Default Re: full frame

    well said

  7. #7
    Member
    Join Date
    Mar 2009
    Location
    Upper Serangoon
    Posts
    1,187

    Default Re: full frame

    The downside is it costs usually abit more than "crop lenses" and is usually heavier. Sometimes the zoom range may be awkward on a crop sensor as well.

    IQ wise, its usually great with no downsides especially since you get to use the center of the image circle formed which is usually sharper than the edges.

  8. #8
    Member sprewell's Avatar
    Join Date
    Nov 2005
    Location
    Serangoon Central
    Posts
    1,723

    Default Re: full frame

    downside is that the cameras are normally heavier :P

    other than that i don't see any significant issues since im a wide-standard focal length user.
    Hasselblad 503CW | 100mm f/3.5 CF | Contax 645 | Zeiss 80mm f/2 | Website

  9. #9

    Default Re: full frame

    resolution.
    FF lens r usually not optimise for the center of the pic.
    it really shows when using FF lenses on aps-c body.

  10. #10
    Senior Member ZerocoolAstra's Avatar
    Join Date
    Mar 2008
    Location
    rainy Singapore
    Posts
    9,523

    Default Re: full frame

    Huh??
    It's often been said that using a full frame lens on an APS-C body allows you to utilize the "sweet spot" of the lens.
    This seems to contradict your point, unless I've mis-read...
    Exploring! :)

  11. #11
    Senior Member 1912123's Avatar
    Join Date
    Sep 2009
    Location
    Zion
    Posts
    2,010

    Default Re: full frame

    You can refer to dpreview website, for certain lens they have reviews for both FF and APS-C DSLR.

    For example, the review of Sigma 50mm F1.4, the performance on FF is much better.
    for APS-C:
    http://www.dpreview.com/lensreviews/..._c16/page4.asp

    for Full Frame:
    http://www.dpreview.com/lensreviews/..._c16/page5.asp
    天国近了。
    Sony A550 & C3

  12. #12

    Default Re: full frame

    Quote Originally Posted by Numnumball View Post
    F

    Upside is most APC sensor will stand to benefit from the sweet spot (sharpness) that FF offers since only the center portion of the FF lens is used.
    This is the biggest advantage of all.

  13. #13

    Default Re: full frame

    Quote Originally Posted by bengchiat View Post
    resolution.
    FF lens r usually not optimise for the center of the pic.
    it really shows when using FF lenses on aps-c body.
    Quote Originally Posted by ZerocoolAstra View Post
    Huh??
    It's often been said that using a full frame lens on an APS-C body allows you to utilize the "sweet spot" of the lens.
    This seems to contradict your point, unless I've mis-read...
    Quote Originally Posted by 1912123 View Post
    You can refer to dpreview website, for certain lens they have reviews for both FF and APS-C DSLR.

    For example, the review of Sigma 50mm F1.4, the performance on FF is much better.
    for APS-C:
    http://www.dpreview.com/lensreviews/..._c16/page4.asp

    for Full Frame:
    http://www.dpreview.com/lensreviews/..._c16/page5.asp
    I'm no lens scientist but I believe that this is one of the most over-rated "benefit" of APS-C sensors...

    Bro bengchiat talked about resolution... lenses which have not-so-high resolving power will show their weakness on a high-mpx crop factor body, whilst may not be obvious to most eyes on a full-frame body.

    Rmb, a 1.6x crop factor image is essentially a 33% crop of an image from it's full-frame image size.

    The main advantage of a crop-factor body is greater pixel magnification, corner performance (since you're not even using the corner of the FF lens) and less vignetting.

    Sharp in the centre does not mean sharper on a crop factor body.
    Last edited by surrephoto; 19th February 2010 at 02:43 AM.

  14. #14
    Member
    Join Date
    Mar 2009
    Location
    Upper Serangoon
    Posts
    1,187

    Default Re: full frame

    Quote Originally Posted by surrephoto View Post
    I'm no lens scientist but I believe that this is one of the most over-rated "benefit" of APS-C sensors...

    Bro bengchiat talked about resolution... lenses which have not-so-high resolving power will show their weakness on a high-mpx crop factor body, whilst may not be obvious to most eyes on a full-frame body.

    Rmb, a 1.6x crop factor image is essentially a 33% crop of an image from it's full-frame image size.

    The main advantage of a crop-factor body is greater pixel magnification, corner performance (since you're not even using the corner of the FF lens) and less vignetting.

    Sharp in the centre does not mean sharper on a crop factor body.
    I have to disagree here, FF bodies like the 5DM2 and D3X have even greater pixel density than most "crop" bodies out there which will be a even greater test of the "resolving power" of lenses, especially when edge resolution is taken into account.

  15. #15

    Default Re: full frame

    Quote Originally Posted by sabee View Post
    I have to disagree here, FF bodies like the 5DM2 and D3X have even greater pixel density than most "crop" bodies out there which will be a even greater test of the "resolving power" of lenses, especially when edge resolution is taken into account.
    Sabee, I think you are mistakened with regards with full-frame pixel density exceed most crop bodies. However, you are certainly right that corner performance is also a decisive factor, this is usually better on a crop factor body since you only utilise the centre of the lens.

    Eos 5DII, 21 mpx - 6.4 m

    Eos 30D, 8.2 mpx- 6.4 m

    Eos 450D, 12.2 mpx - 5.1 m

    Eos 7D, 18 mpx - 4.3 m

    As seen from these values of pixel size, pixel density on a 5DII is lesser than most crop-factor bodies.

  16. #16
    Member
    Join Date
    Mar 2009
    Location
    Upper Serangoon
    Posts
    1,187

    Default Re: full frame

    Quote Originally Posted by surrephoto View Post
    Sabee, I think you are mistakened with regards with full-frame pixel density exceed most crop bodies. However, you are certainly right that corner performance is also a decisive factor, this is usually better on a crop factor body since you only utilise the centre of the lens.

    Eos 5DII, 21 mpx - 6.4 m

    Eos 30D, 8.2 mpx- 6.4 m

    Eos 450D, 12.2 mpx - 5.1 m

    Eos 7D, 18 mpx - 4.3 m

    As seen from these values of pixel size, pixel density on a 5DII is lesser than most crop-factor bodies.
    You are right - my math failed me, should have relied on actual pixel density numbers instead.

  17. #17

    Default Re: full frame

    Personally not really a downside for me at all but a plus. Just remember to choose the right len factored in the crop factor for your current APS-C camera. For example, if you need a 50mm len just buy a 35mm FF len. Next time when you upgrade to a FF you already have a 35mm len.
    Last edited by Dslrman; 19th February 2010 at 03:45 AM.

  18. #18
    Senior Member ZerocoolAstra's Avatar
    Join Date
    Mar 2008
    Location
    rainy Singapore
    Posts
    9,523

    Default Re: full frame

    Quote Originally Posted by surrephoto View Post
    I'm no lens scientist but I believe that this is one of the most over-rated "benefit" of APS-C sensors...

    Bro bengchiat talked about resolution... lenses which have not-so-high resolving power will show their weakness on a high-mpx crop factor body, whilst may not be obvious to most eyes on a full-frame body.

    Rmb, a 1.6x crop factor image is essentially a 33% crop of an image from it's full-frame image size.

    The main advantage of a crop-factor body is greater pixel magnification, corner performance (since you're not even using the corner of the FF lens) and less vignetting.

    Sharp in the centre does not mean sharper on a crop factor body.
    Thanks for pointing that out!
    Yes, I confused corner performance with resolution...

  19. #19

    Default Re: full frame

    Quote Originally Posted by james8110 View Post
    wat the down side of using a full frame lens on a non full frame body?
    For what I do,

    I find the lenses look nicer on FF.

    eg. the 70-200 more usable on FF than non-FF (too long)
    It is the camera, not the photographer.
    my flickr - adamloh.com

  20. #20
    Senior Member wildcat's Avatar
    Join Date
    Sep 2004
    Location
    Bedok
    Posts
    3,268

    Default Re: full frame

    Quote Originally Posted by 1912123 View Post
    You can refer to dpreview website, for certain lens they have reviews for both FF and APS-C DSLR.

    For example, the review of Sigma 50mm F1.4, the performance on FF is much better.
    for APS-C:
    http://www.dpreview.com/lensreviews/..._c16/page4.asp

    for Full Frame:
    http://www.dpreview.com/lensreviews/..._c16/page5.asp
    Hmm.. interesting stuffs. I should learn to interpret such charts

Page 1 of 2 12 LastLast

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
  •