An interesting video but he makes the mistake of using round batteries. That can often, vs using a good flat target, lead to a inaccurate test result with the D5500. We've seen that happen here a number of times
Thanks for letting me know, much appreciated.
Both look like no focus calibration needed in that case. But given you are using a Muti-Cam 4800DX unit, it may not match give exactly the same results under different conditions. In both shots the AF arrays are covering 4-6 of the batteries at the same time so focus lock can be on any of the six. In the second shot the FoV of the focus array also covers the back monitor but shouldn't lock on to it given the contrast. You may also get different results if shooting in daylight but the 50mm f1.8g doesn't often shift focus in different light like the 35mm f1.8g can.Thanks for letting me know, much appreciated.
I did a test and here are my results (I did the angled battery test method). First was shot from 5ft away and the second from 7ft away.
Thanks, wow that looks like a lot of work. Do I need to do this same test with my 18-140 lens or just the prime?Both look like no focus calibration needed in that case. But given you are using a Muti-Cam 4800DX unit, it may not match give exactly the same results under different conditions. In both shots the AF arrays are covering 4-6 of the batteries at the same time so focus lock can be on any of the six. In the second shot the FoV of the focus array also covers the back monitor but shouldn't lock on to it given the contrast. You may also get different results if shooting in daylight but the 50mm f1.8g doesn't often shift focus in different light like the 35mm f1.8g can.Thanks for letting me know, much appreciated.
I did a test and here are my results (I did the angled battery test method). First was shot from 5ft away and the second from 7ft away.
If you want to know precisely how the D5500 is actually focusing...he's a method that gives exacting and consistent results:
camera focus test
Good luck
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My opinions are my own and not those of DPR or its administration. They carry no 'special' value (except to me and Lacie of course)
Only if you are concerned you might have a focus issue. And actually less work than the "battery test" since you see with a single shot exactly where the plane of focus falls in precise terms.
There will always be sample variation.
Ok I got more shots, let me know what tou think.
Not seeing any major issues given the shutter speed and setup
Sample variation
Google is your friend...And I linked ways before
It can, and has kindly the past. Often early adopters weed out issues for us
What does this mean? Little differences between copy to copy?
Do you think it's worth doing? I'm not a pixel peeper but I just wanted to make sure my body wasn't out of calibration and from the looks of it, with the prime at least it seems like I have a good body?
Hasn't the 18-140 been out for many years? I would think the issues have been dealt with. Isn't lenses like any other electronic device? Where the later generations or version usually have more consistent results and less failure rate.
lens-variance
I always test/check a new lens to see how it performs.
What we wish for isn't always the case. Test after you buy and let use know.
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I can't say for sure; the best way is to use live view and take a photo of the same thing.Here are the two shots I took with the 50mm prime.
I could use a second opinion but from my eyes, it looks good and calibrated properly.
Well I just wamted to make sure I had a good D5500 otherwise I would have exchanged it for another.
I belong to a lot of Nikon forums and have never read that! so where are you seeing these comments? a Canon forum maybe!
As you know cameras and lenses are made separately and have manufacturing tolerances. PDAF depends on precise distances between the AF sensor and back of the lens. It is not bad focus but biased focus because of the parameters taken into account to calculate focus are different than the ones in reality.
Honestly having viewed your test image I believe if you use live view you can get a sharper image. But if you're contented with what you have, don't bother...
