Carl rl Loc: Lutz, FL

Going to Alaska at the end of July and want to have my D750 cleaned, checked out and calibrated at the Nikon Factory Service facility. Curious if others have had similar services performed and know how long it may take. I have read both good and bad experiences. Also, were you happy with the results? Can they be called directly to get their latest repair times?

CHG_CANON Loc: the Windy City

Have you checked your shutter count? What is the cost estimate for the service? What current issue(s) do you want addressed? Honestly, sounds like an unnecessary waste of money and worry.

Carl rl Loc: Lutz, FL

I should have been more specific. I was comparing images from my wife’s D750 with my images and my camera appears to be slightly different in exposure. Cameras are set up identically and photos taken on a tripod at identical time. Also, compared the images with a D7200 in the same manner with similar results. That is the purpose of my inquiry.

Don’t want to waste time or money, but I do want a reliable camera for my trip. I have less than 50,000 shutter actuations.

bikinkawboy Loc: north central Missouri

I’d say you have a good reason to get the camera in for a check up. How you compared and came up with your diagnosis is exactly how I would have done it. (I’ve spent years diagnosing mechanical, electrical and hydraulic problems.)

Carl rl Loc: Lutz, FL

Thanks for both of the responses...that's why I belong to the UHH club. It has been a few years since I had the camera cleaned, so I don't mind having it done, and if they can check/calibrate it at the same time, I'm thinking it would be a good thing to consider doing. The Nikon service is advertised at $89 with an estimated 5 day turnaround. Shipping would be on top of that. There is an excellent Nikon repair person here in town, but if parts are needed then I'd still have to send it to Nikon. Guess I'll give him a call in the morning, to see what his thoughts are. Thank you both for your input.

CHG_CANON Loc: the Windy City

After shipping and insurance, unless Nikon gives a prepaid label, you'll be over $100. Not unreasonable after all.

But, differences between two 'identical' cameras is likely not going to resolved. I suggest taking a free offer to look at comparison images to see if we can point a finger at the issue from the EXIF data, store the files as attachments. You'll need two original & unedited JPEGs, same shot from each camera, preferably with the same lens swapped between the two bodies.

Carl rl Loc: Lutz, FL

As you suggested, attached are 4 separate photos taken with both Camera 1 and Camera 2. All were shot outdoors on my lanai, mounted on a tripod using a timed shutter release. Camera 1 was the one I thought I was having trouble with.

For each Camera, I used the same lenses switching between a Nikon 28-300mm and Nikon 105mm f:/2.8. File names reflect the Camera and lens options: (Cam 1 28-300mm, Cam 1 105mm, Cam 2 28-300mm and Cam 2 105mm). Settings were basically the same; I shot in Aperture Priority set to f:/8. The exposures were at 1/20 and 1/30 sec. for 3 of the shots, but I found it odd that one was at 1/8 sec. Since these were all shot outdoors, perhaps the light changed for that one shot. I did notice that ADL was set to Auto for Cam 1, and set to Low for Cam 2, but I don't think that would have affected the exposure.

This was an interesting endeavor and after closely examining the photos I can't really see any differences in IQ. Perhaps it was a difference in the 2 lenses I was comparing yesterday. Perhaps it was much ado about nothing!
But, in any event thank you for your help and suggestions. And, after looking at the EXIF data, if you can see a reason for the change in shutter speed for that single photo, I would be interested in hearing your thoughts.

CHG_CANON Loc: the Windy City

Carl, you have to store the files so the EXIF can be obtained from the attachment / download. Please update / reply.

Carl rl Loc: Lutz, FL

Sorry, I didn't realize that I needed to select "Store Original". So here they are again in the same order as referenced.

Thanks for all you efforts and assistance,

(Download)


(Download)


(Download)


(Download)

BebuLamar

If that is the case after you send it in it may come back difference and yet not matching your wife camera. I found that cameras of the same make and model do not match in term of exposure. Not only the meter but also the ISO sensitivity.

CHG_CANON Loc: the Windy City

Hey Carl, Nikon ADL - Active D-Lighting - is a technology that optimizes high contrast images to restore shadow and highlight details that are often lost when strong lighting increases the contrast between bright and dark areas of the image. It might cause differences between the two cameras in the right (wrong) situations, with the slight different settings, though probably not these four examples. For the difference in the shutterspeed, likely the light did change slightly causing the camera meter to adjust the shutterspeed. The 105mm images really are the same.

larryepage Loc: North Texas area

Carl-
I have two D500s, similar serial numbers, bought brand new a little over 6 months apart. The first one requires 1/3-2/3 stop of Exposure Compensation to behave as I would like it to. The second one does great without any adjustment. I'm not going to suggest that you don't send your D750 for a CLA, but it sounds like your camera is working great without any adjustment needed. And it may not be any different when it returns from the clinic.

Carl rl Loc: Lutz, FL

Thanks EVERYONE. It appears that the consensus is that my camera is fine and I don’t need to worry. Doing the additional comparison tests pretty much convinced me that all is well.

Setting the ADL caused issues as well as just a variance in the characteristics of the 2 cameras. I have noticed some differences in the past but these seemed worse. In the past I’ve also tried underexposing 1/3 stop but recently I have been attempting to ETTR more to help limit noise.

Again, thanks for all the great input and help in resolving my apparent problem.

jerryc41 Loc: Catskill Mts of NY

I would first check with Nikon. They would know. If the camera is working okay, I'd leave well enough alone. It would have to make the trip to and from Nikon. Will there be problems enroute? Have it serviced when you get home. You're also bringing a small, pocketable camera, right?

ldhflyguy Loc: near Chicago

Hi CHG CANON,
I did the download for the images. What do I do next to see the EXIF information? I tried a few things but did not come up with anything I think is useful. Please help me learn.