Marianne Oelund

Marianne Oelund

Lives in United States Seattle region, WA, United States
Works as a Electronics Engineer
Has a website at actionphotosbymarianne.com
Joined on Jan 22, 2004
About me:

To have great value, life and knowledge must last, therefore we should first seek eternal truth and life, available to us through the abounding love and grace of our Savior.
I find inspiration from the following authors and works, which have my highest recommendation. Please do not miss reading at least a few of these!
The Word: Holy Bible. H. A. Baker, Rolland and Heidi Baker: various. Pastor Surprise Sithole: Voice in the Night. Mel Tari: Like a Mighty Wind. Dr. James Maloney: various. Guillermo Maldonado: various. Anna Rountree: Heaven Awaits the Bride. Dale and Paula Black: various. Rev. Elwood Scott: 40 days in Heaven, the story of Seneca Sodi. Praying Medic: Divine Healing made Simple. Blake Healy: The Veil.

Marianne Oelund's recent activity

  • You shouldn't. According to your original post, re-focusing slightly so the viewfinder image appears sharp, then results in a mis-focused photo. By design, it is not possible for missing glasses, ...
  • Your viewscreen is mounted incorrectly, and/or the reflex mirror alignment has been disturbed.  Hopefully you purchased your camera new from a reputable dealer.  If it was a second-hand purchase, ...
  • It was close to nominal.  I never had to set the DC ring beyond F2 before, to achieve best IQ at f/2.
  • Light level, lighting color, subject color, subject detail, lens aperture, subject distance, atmospheric lensing, susceptibility of the AF system to noise . . . Temperature variations affecting the ...
  • Replied in Easy: D3s
    Still own and heavily use both D3s bodies purchased in 2009-2010.  For my purposes, it remains the best indoor sports action camera that Nikon ever made.
  • Replied in DC ring scale
    If we look at the range F2 to F5.6, the ring is marked such that the numbers follow powers of two where the exponent is a linear function of ring rotation (or detent number, since they are equally ...
  • It amazes me that anyone would expect a 20mm lens at f/1.8 on a full frame camera to be free of coma.  Who are these people? The only lens I own which I might consider using for astro wide open is ...
  • This afternoon, I had an opportunity to take test images with a rental 135/2 DC and 105/2 DC. On the 135/2, the DC ring was very well-centered, with Center being better than both F2 and R2, and ...
  • Replied in Query?
    From the opening post: "Focusing must be re-done manually for each DC-ring position using Live View" So far, everyone else seems to have understood that instruction.
  • Here is my composite of test photos that I took.  The green circles are images of a pinpoint light source, i.e., they are the lens point-spreads. You can see the effect that SA has on contrast, by ...
  • Any 12Mpix body would be more than sufficient for this test.  You're mainly looking for what DC-ring setting produces best contrast, and close examination of edges isn't necessary.  It will be ...
  • AF aside, is the optical performance of your lens at f/2 best with the DC ring centered, or does it improve if it is offset slightly?
  • I see - yours has a slight misalignment between the detents and the markings. My lens doesn't have any significant misalignment in that respect, i.e., the detents hold the DC ring where the ...
  • In my case, Nikon service had already disassembled/reassembled the lens in order to replace mechanical components related to focus. They re-installed the DC ring very far off center (not between ...
  • Boring is good, in this case.  Then your optimal DC ring setting would be between 0 and F2, and probably closer to 0 than the F2 detent. Thanks very much, Michael
  • Following recent service at Nikon for focus-helicoid mechanical issues, I have found that the Defocus Image Control ring on my 135/2 DC is significantly off-center. I attempted to have Nikon ...
  • It is quite possible that there is a mechanical problem with the focus helicoid or related parts, rather than the AF motor.  I have had AF motors need replacement in several lenses, but none of ...
  • Completely disagree that this lens isn't designed to be sharp at wide apertures. It is not merely an "effects lens." If yours doesn't seem sharp at f/2, check the DC ring calibration by taking a ...
  • Replied in Get an estimate
    These are questions which any prospective buyer will likely ask: Both sides, or just one side?  If just one, which? When it "gets stuck" will it still AF successfully, or do you need to manipulate ...
  • Since my example crops are from center frame, and at the focus plane only, they will not show CA issues. By magenta shift, are you referring to overall lens color cast, or aberrations such as ...
Activity older than 12 months is not displayed.
Marianne Oelund has not added any gear yet.
Total messages 5072
Threads started 74
Last post 4 days ago
Total comments 5
Total likes 6
Last post Dec 3, 2013
Total reviews 1
Last review Jan 23, 2004
Entries 1
Votes cast 0
Last entry Oct 17, 2012
Photos uploaded 82
Last upload 11 months ago