Tag Archives: contrast detect

Fujifilm X-T2 Autofocus Capability Questioned — Especially In Terms Of ‘Phase Detection’.

by Anura Guruge


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Click here
to access original DPReview post.


fujifilm-x.com link referenced above.

xt2pd2

Click image to access the original from Fuji no less! This is not funny.


This is NOT good news for Fuji X-T2 fans.

Phase Detection‘ is what was supposed to make the Fuji autofocus better.

DSLRs, like the Nikon D500, use ‘Phase Detection’ 100% of the time when the mirror is down (i.e., viewfinder-mode).

If the X-T2 is using ‘contrast detection’ 66% of the time we are unlikely to see that bigger an improvement in AF.

I am SO GLAD I decided against getting a X-T2 and yesterday embarked on my new life with Nikon by getting a P900 to begin with (fully aware that the P900 is NOT a DSLR and as such does not have ‘Phase Detect’) while I mentally prepare myself to buy a Nikon D500.


Related posts:
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by Anura Guruge

Sony RX10 III — Autofocus ‘Spatial Object Detection’ Still Based On Contrast AF.

by Anura Guruge


sonyrx103spatial111

From Sony’s announcement of the Sony RX10 III. Click to ENLARGE and read here. Use link below to access original.

Click to read original Sony Press Release for the Sony RX10 III.


sonyrx103fastafsony

Click to ENLARGE. From Sony’s product page for the RX10 II at Sony.com.


sonyrx103amazondpreciere

Click to access DPReview ‘First Impressions’ video at Amazon (who own DPReview). At the 1.50 minute mark (show) there is a discussion on CONTRAST-based autofocus.


DPReviews ‘criticism’ of the Sony RX10 II, though  got a DPReview 82% rating Gold rating, mainly centered around its Auto Focus (AF) capability.

From what I can see the new RX10 III still uses the same Contrast-Detect AF, as in the RX10 II, rather than having Phase-Detect. The above video highlights this.

Appears that the ‘Spatial Object Detection’ touted in the RX10 III Press Release works with Contrast (and is really an enhancement to Contrast-Detect).

This worries me. Though I use Manual Focus more than most, I can only do so on still objects. This is the one RX10 III ‘issue’ that gives me serious pause.


Related posts:
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by Anura Guruge