Metabones & Fotodiox Flare Test with 24mm TSE on A7II

Discussion in 'Sony Alpha E-Mount Lenses' started by dmward, Aug 4, 2015.

  1. dmward

    dmward TalkEmount Veteran

    200
    Mar 21, 2015
    Metro Chicago
    David
    Someone asked about flare with the EF to E adapter in another thread.
    This morning I took A7II, both adapters and Canon 24mm TSE lens into front courtyard and did a test.

    Camera was set to ISO 200, Av shutter. It was on a tripod and I used cable release for shutter.

    I ran through all the F stops but am only linking to the F3.5 set here. Mainly because it seems that's where the flare is most likely to appear.

    The scene includes sky, sunlit white brick (slight clipping indication here in LR) as well as some deep shadows amongst the plants to camera right.

    I shot first with Fotodiox adapter, then with Metabones IV, and finally with Metabones IV while flagging the lens above and left since that's where the highlights and sky were in the scene.

    To accommodate faster thread loading I am linking to reduced sized JPGs with a link below each to the full sized camera generated JPG. (The reduced sized jpgs were generated using the Lightroom export function.)

    I looked at the images at 1:1 and can't find any indication of flare caused by the adapters.

    I noticed when using the metadata function in Lightroom Library that the camera assigns ZA to the 24 TSE when mounted on the Fotodiox adapter and GII when the lens is mounted on the Metabones adapter.

    Fotodiox Adapter:

    [​IMG]

    Full sized camera JPG

    Metabones IV adapter:

    [​IMG]

    Full sized camera JPG

    Metabones IV adapter with flag:

    [​IMG]

    Full sized camera JPG
     
  2. WoodWorks

    WoodWorks Super Moderator

    Dec 12, 2012
    Ashland, OR, USA
    David
    I wouldn't think that flare could be problematic unless you're shooting into the source of light, David. So your test, with the source of light behind you, isn't likely to show any flare with any lens/adapter combo.
     
  3. WestOkid

    WestOkid TalkEmount All-Pro

    Jan 25, 2014
    New Jersey, USA
    Gary
    agreed. My fotodiox had issues with flare and washed out colors into direct light sources and sensor reflections when shooting light sources at night. Otherwise, no issues.
     
  4. dmward

    dmward TalkEmount Veteran

    200
    Mar 21, 2015
    Metro Chicago
    David
    The reason I did it with sun behind is because someone in another forum made specific comment that the internal flare caused by an adapter is different than flare caused by light source hitting the front element and the way to demonstrate is to have high luminous areas in the image that would cause "bouncing" light in the adapter. The suggestion is that larger image circle lenses like the TSE are particularly susceptible because of the larger than normal image circle. Similar to the lenses used on view cameras to accommodate tilts and shifts.

    I do remember it being an issue when shooting with a view camera so thought I'd do this test. We all know about flare with light source sticking the front element.