got my sigma 18-35mm 1.8 art lens.

Discussion in 'Nikon Lenses' started by dannylightning, Dec 7, 2015.

  1. dannylightning

    dannylightning Been spending a lot of time on here!

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    EDIT. after spending quite a bit of time screwing around with this lens and the sigma dock i think i finally have it tuned. it was a mess out of the box but with the dock i was able to fix it up and it now seems to be doing a awesome job. ill see how it goes the more i use it. but so far so good after the fine tune.

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    up close it seems to be ok focus wise. step back about 5-7 feet and this is what i am getting at the same shutter speed, i am guessing this is because it does not have VR, but than again i could hand hold my nikon 35mm 1.8g at those shutter speeds just fine and it did not have VR

    if i go into the af fine tune my camera is recognizing the lens as my nikon 18-200mm lens.



    i think this thing is going back to the store.

    20151206-DSC_5136.jpg


     
    Last edited: Dec 10, 2015
  2. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    What shutter speed?
     
  3. dannylightning

    dannylightning Been spending a lot of time on here!

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    1/40 with the lens at 35mm and 1.8 from everything i have ever read you should be able to hand hold a lens with the shutter speed set to 1/the focal length of the lens. and i know i used that shutter speed on my nikon 1.8 when hand holding at night. at least i am pretty darn sure i did. maybe i am mistaken here.

    i boosted the shutter speed up to 1/250 did the AF fine tune which ended up being +13 to get it set right on my other target which has a target and a ruler, i did this on a tripod at f/2.5 and the images are coming out sharp but i need to use a faster shutter speed than i think i should have to be using. maybe i am wrong here.

    i have the sigma dock but crap that is complicated, say your doing the adjustment at 35mm you have like 6 different positions at 35mm depending on where the focus number are set. that would take for ever to set up..
     
  4. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    In my experience things start getting sketchy below 1/60 - generally most people can hand-hold reasonably down to 1/30, but when you're that close to the target any little bit of movement will show.
     
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  5. dannylightning

    dannylightning Been spending a lot of time on here!

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    actually the closer i am to the target the better farther away seems a little worse. the free target i downloaded had instructions of how far away to be for the focal length you are using so i go by that. the other target with rules where you want to have 0 dead sharp and the positive and negatives numbers equity bury i am not sure how far away to be with that but it seemed to work ok..

    here is a photo i just took of a object after tuning the lens the best i could. the shot is hand held at 1/80 and f/1.8 focus should have been on one of its eyes, cant remember if it was the left or right.

    i guess i was just using too slow of speed for this lens plus the focus was way off out of the box. fine tune on all my other lenses have been between 0 and +/- 3 and this one is at +13, that does not seem right.

    20151207-DSC_5230.jpg
     
  6. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Might be worth trying another copy.
     
  7. dannylightning

    dannylightning Been spending a lot of time on here!

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    yeah, might be, if i need to have that kind of AF fine tune on the lens would you say i should return it, seems to be taking very good photos at the moment. here is one at 18mm and one at 35mm at f/2.5 these look really good IMO no editing done or anything, they seem very sharp.. if it were not for that AF fine tune number i think i would be happy at this point. is that worth sending it back over ?

    gonna take a few from farther and way and crop them and see how those look in a few..

    20151207-DSC_5238.jpg 20151207-DSC_5239.jpg
     
  8. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    If it works, it works, but yeah, that's a heck of a fine-tune index. Do you have another body on which to try it for comparison?
     
  9. dannylightning

    dannylightning Been spending a lot of time on here!

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    no, as of now i just have the D7200, i just took a photo of the same subject with my nikon 18-200mm and well it looks pretty comparable just not as wide of a aperture. looks pretty comparable as far as IQ goes and seems pretty sharp.

    i took some pics with the sigma at 35mm standing farther back and it the focus seems kind of hit and miss. took a few different shots and some were nice and sharp, some looked like missed focus. not sure about this lens..

    20151207-DSC_5255-001.jpg
     
  10. dannylightning

    dannylightning Been spending a lot of time on here!

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    here is one more shot with the simga on the target with fine tune off as you can see its really missing focus.

    20151207-DSC_5257.jpg
     
  11. jaomul

    jaomul Been spending a lot of time on here!

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    Can't really say, but it looks like your room is darkish with a tungsten light, is that correct
     
  12. dannylightning

    dannylightning Been spending a lot of time on here!

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    i have 2 of those spiral bulbs in the ceiling light fixture , each bulb is equal to 100 watts and 1,600 lumens. its not really that dark in my room IMO, seems to be pretty bright in here actually, much brighter than the rest of the house.
     

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