Announcement

Collapse

December's CHALLENGE

The topic to inspire your creative juices this month is BOXES Please don't forget to vote on November's LEAVES challenge and please re-vote if you already did but before the recent forum upgrade.

See more
See less

Focus adjustment for 2 Sigma 150mm Macros

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Focus adjustment for 2 Sigma 150mm Macros

    What a difference

    On my E5, one dials in at +5, the other at +20. I was surprised at the gap. Varying QC by Sigma?
    Ceri Vale
    (www.vale-images.co.uk)

    (Latest Work)

    Equipment - Olympus stuff - 'nuff said

  • #2
    Re: Focus adjustment for 2 Sigma 150mm Macros

    So what are you supposed to do if you don't have focus adjust?
    http://www.flickr.com/photos/flip_photo_flickr/

    Comment


    • #3
      Re: Focus adjustment for 2 Sigma 150mm Macros

      Originally posted by Phill D View Post
      So what are you supposed to do if you don't have focus adjust?
      Avoid Sigma lenses?

      Pernsonally, I've never encountered a Sigma lens without a focus problem (front.back focus) despite the camera system.
      After breaking through the technology barrier,
      you run into the barrier of accepted wisdom.
      -Yoshihisa Maitani

      Comment


      • #4
        Re: Focus adjustment for 2 Sigma 150mm Macros

        Hmmmm......can't help thinking that's a little drastic

        Because once the adjustments are dialled in, they're awesome lenses

        Though as Phill D says, you have a problem if you have no way to adjust focus. Manual adjustments would be the only option.
        Ceri Vale
        (www.vale-images.co.uk)

        (Latest Work)

        Equipment - Olympus stuff - 'nuff said

        Comment


        • #5
          Re: Focus adjustment for 2 Sigma 150mm Macros

          Originally posted by CallaWolf View Post
          Hmmmm......can't help thinking that's a little drastic
          Maybe, but Zuiko lenses is probably the most valued advantage of the E-System.

          Sigma is notorious for its bad QC and focus issues. I don't see why people bother with them. With E-620, E-30 and E-5 you can adjust focus but with other "E-" cameras this serious hardware-level issue cannot be solved and there simply isn't any sense of using Sigma lenses on them.


          Originally posted by CallaWolf View Post
          Because once the adjustments are dialled in, they're awesome lenses
          Hm, I've personally tried an tested Sigma 30mm f/1.4, 105mm f/2.8, 150mm f/2.8 and the Bigma.

          None of them convinced me.

          Sigma 30mm f/1.4 was hopelessly soft up to f/2.8 and its edges were horrible. Still, it never reached the IQ of Zuiko 50mm f/2 at any aperture.

          Sigma 105mm f/2.8 was probably the best of all but still it couldn't deliver the amount of detail and clarity that Zuiko 35mm f/3.5 and (especially) 50mm f/2 can.
          I felt that there was something missing. Good lens for €200-250, not for more (here in Greece it costs €490)

          Sigma 150mm f/2.8 is IMO a very overrated lens. I don't know how it behaves on other camera systems but I was very disappointed.
          Pretty good for close-ups but if used as a tele lens (focus @ 20mm and above or infinity) it was horrible. Annoying "halos" around edges and mediocre clarity (tested indoors on a convention, artificial lights) make this lens a bad choice for tele work when compared to Zuiko 50-200mm f/2.8-3.5

          The Bigma is the most noteworthy because if its reach but both copies I tested were problematic. One had really serious focus issues and the other had a defective diaphragm....

          All in all, I've totally rejected Sigma lenses, especially for 4/3.
          Focus problems aside, they are not even cheap. If they were, then I could understand why some Olympus users could prefer them.

          But being expensive and problematic and with lower IQ than Zuikos ?
          What's the point?

          I was thinking of buying a Sigma 105mm for Macro work, but when I tested it I said "Thanks, but no thanks". I prefer cropping images taken with Zuiko 35mm and 50mm.
          After breaking through the technology barrier,
          you run into the barrier of accepted wisdom.
          -Yoshihisa Maitani

          Comment


          • #6
            Re: Focus adjustment for 2 Sigma 150mm Macros

            Originally posted by zuiko-holic View Post
            Avoid Sigma lenses?

            Pernsonally, I've never encountered a Sigma lens without a focus problem (front.back focus) despite the camera system.
            My Sigma 150 is spot on without adjustment
            Regards Huw


            Olympus equipment
            Capture One Pro
            My flickr

            Comment


            • #7
              Re: Focus adjustment for 2 Sigma 150mm Macros

              Originally posted by zuiko-holic View Post
              Sigma 150mm f/2.8 is IMO a very overrated lens. I don't know how it behaves on other camera systems but I was very disappointed.
              Pretty good for close-ups but if used as a tele lens (focus @ 20mm and above or infinity) it was horrible. Annoying "halos" around edges and mediocre clarity (tested indoors on a convention, artificial lights) make this lens a bad choice for tele work when compared to Zuiko 50-200mm f/2.8-3.5
              Not bad for a telephoto lens IMHO.
              OK the 50-200 is better (flexiblity and much faster focus) but the Sigma 150mm is no where near bad.
              Edit: These are quite heavy crops.



              Regards Huw


              Olympus equipment
              Capture One Pro
              My flickr

              Comment


              • #8
                Re: Focus adjustment for 2 Sigma 150mm Macros

                Huw AWESOME SHOTS of that Heron ! Stunning ! Wow you made my day ... off with Sig 150 to find a heron ...
                .
                .
                [I].
                .
                I Lurve Walking in our Glorious Countryside; Photography;
                Riding Ducati Motorbikes; Reading & Cooking ! ...


                http://www.flickr.com/photos/photomagicf1_chevvy/sets/

                the ONE photo album

                Comment


                • #9
                  Re: Focus adjustment for 2 Sigma 150mm Macros

                  +1 - those are excellent
                  Ceri Vale
                  (www.vale-images.co.uk)

                  (Latest Work)

                  Equipment - Olympus stuff - 'nuff said

                  Comment


                  • #10
                    Re: Focus adjustment for 2 Sigma 150mm Macros

                    Originally posted by Greytop View Post
                    Not bad for a telephoto lens IMHO.
                    OK the 50-200 is better (flexiblity and much faster focus) but the Sigma 150mm is no where near bad.
                    Edit: These are quite heavy crops.
                    These are really nice samples!

                    However, when lighting conditions are less than ideal, like an interior space with artificial light, I found the Sigma 150mm not up to the task.

                    Some examples:

                    Sigma 150mm wide-open

                    http://img10.imageshack.us/img10/8717/sigma1wb.jpg
                    http://img402.imageshack.us/img402/5276/sigma2h.jpg
                    http://img233.imageshack.us/img233/4072/sigma3c.jpg
                    http://img856.imageshack.us/img856/3871/sigma4.jpg


                    Zuiko 50-200mm wide-open

                    http://img838.imageshack.us/img838/2873/zuiko1.jpg
                    http://img12.imageshack.us/img12/543/zuiko2.jpg
                    http://img219.imageshack.us/img219/7291/zuiko3.jpg
                    http://img215.imageshack.us/img215/6117/zuiko4.jpg

                    *No Post-Processing. NF Off. JPEGs extracted from E-3 RAWs via Lightroom 3. Compressed with ACDSee @ 88% Quality. EXIFs intact to check settings.*

                    The differences can be easily noticed even without the crops or 100% pixel-peeping.
                    The pictures taken with the Zuiko 50-200 have much more clarity and appear sharper while those from Sigma could be again the result of a focusing issue (again!). None of the images I shot with the Sigma was actually sharp.

                    *Images taken at the 16th WFTU Congress which took place in Greece. April 6th 2011*
                    After breaking through the technology barrier,
                    you run into the barrier of accepted wisdom.
                    -Yoshihisa Maitani

                    Comment


                    • #11
                      Re: Focus adjustment for 2 Sigma 150mm Macros

                      I have a soft spot for the sigma 10-20mm

                      Very nice lens for me
                      My Flickr Home Page

                      Comment


                      • #12
                        Re: Focus adjustment for 2 Sigma 150mm Macros

                        Originally posted by Phill D View Post
                        So what are you supposed to do if you don't have focus adjust?
                        Use manual focus? The AF is useful with that lens, but so is MF. My lens seems to be pretty good on my E30, but I haven't yet tried testing it on a focus test chart to be totally sure.
                        Ross
                        I fiddle with violins (when I'm not fiddling with a camera).
                        Flickr: https://www.flickr.com/photos/ross-the-fiddler/
                        Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
                        Lenses: M.ZD7-14mm f2.8 PRO Lens, M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens, MC-14, MC-20, M.ZD45mm f1.8, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
                        Flashes: FL36R X2, FL50R, FL50.
                        Software: Capture One Pro 10 (& Olympus Viewer 3).

                        Comment


                        • #13
                          http://www.flickr.com/photos/flip_photo_flickr/

                          Comment


                          • #14
                            Re: Focus adjustment for 2 Sigma 150mm Macros

                            Originally posted by zuiko-holic View Post
                            These are really nice samples!

                            However, when lighting conditions are less than ideal, like an interior space with artificial light, I found the Sigma 150mm not up to the task.

                            Some examples:


                            The differences can be easily noticed even without the crops or 100% pixel-peeping.
                            The pictures taken with the Zuiko 50-200 have much more clarity and appear sharper while those from Sigma could be again the result of a focusing issue (again!). None of the images I shot with the Sigma was actually sharp.

                            *Images taken at the 16th WFTU Congress which took place in Greece. April 6th 2011*
                            Maybe you tried a bad sample zuiko-holic but I wouldn't tarnish all Sigma lenses with the same brush.

                            To be honest I have rarely used mine wide open because I use it for macro (it's intended purpose) but just for my own curiosity I've just taken some long distance shots from my back door of features in our garden and beyond. The house is about 120+ metres away, the swing is about 50 metres away for reference.
                            These are all Jpegs straight from the camera, resized for the web, there are also a few other examples you can view at the same location.

                            I don't think these are at all bad for f/2.8



                            100% crop




                            100% crop




                            100% crop
                            Regards Huw


                            Olympus equipment
                            Capture One Pro
                            My flickr

                            Comment


                            • #15
                              Re: Focus adjustment for 2 Sigma 150mm Macros

                              Huw,
                              I am with you 100% the Sigma 150 and Bigma are terrific lenses ! As per your own samples I have tried the 150 about the garden for distance shots and find it pretty good - considering its a MACRO LENS ! Frankly, I would only use it for MACRO ! However, to get the best SETTINGS are the key
                              .
                              .
                              [I].
                              .
                              I Lurve Walking in our Glorious Countryside; Photography;
                              Riding Ducati Motorbikes; Reading & Cooking ! ...


                              http://www.flickr.com/photos/photomagicf1_chevvy/sets/

                              the ONE photo album

                              Comment

                              Working...
                              X