AF Spot mode: hidden fact revealed - AF point is 30% smaller than in "select"

beholder3 · 09-13-2018, 10:25 AM

Originally posted by stevebrot

One array in two sections can service both f/2.8 and f/5.6, but with separate microlens/prism. It takes two arrays of this type to do crosspoint.

Ok, maybe I could be misunderstood: yes, there are separate line pairs for f5.6 and f2.8. Both use just one single continuous line on each side though. They are not 5 or 7 separate things.

And yes, for crosspoints you need two more.

But: each fo the three f2.8 is just a horizontal line, not a cross (I have no idea if they mix a cross for f2.8 lenses by using an horizontal f2.8 line and a vertical f5.6 line)..

leekil · 09-13-2018, 11:59 AM

Originally posted by Andrea K

SPOT or Select on central point are equal, at least on k-1, I checked. it's a bad translation or a wrong sense of the phrase.

How did you test it?

Andrea K · 09-14-2018, 12:15 AM

Originally posted by leekil

How did you test it?

I put a AA battery on a table, the 77mm Limited, then I focused the far background. After this I tried to focus on the battery with the two focus modes putting the battery outside the central point, in both cases the camera has focused when the battery was between the central point and the nearest one

There are some evidence that the statement on RICOH site are correct even if doing some tests the two modes look the same.

Canon has a similar feature, there is a "SEL" like mode but you can choose two AF points size.

09-14-2018, 12:15 AM	#18
Andrea K Pentaxian Join Date: Mar 2009 Location: Rome, Italy Posts: 822	Originally posted by leekil How did you test it? I put a AA battery on a table, the 77mm Limited, then I focused the far background. After this I tried to focus on the battery with the two focus modes putting the battery outside the central point, in both cases the camera has focused when the battery was between the central point and the nearest one There are some evidence that the statement on RICOH site are correct even if doing some tests the two modes look the same. Canon has a similar feature, there is a "SEL" like mode but you can choose two AF points size. Last edited by Andrea K; 09-22-2018 at 10:53 AM.

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09-13-2018, 10:25 AM	#16
beholder3 Pentaxian Join Date: Dec 2011 Posts: 3,112 Original Poster	Originally posted by stevebrot One array in two sections can service both f/2.8 and f/5.6, but with separate microlens/prism. It takes two arrays of this type to do crosspoint. Ok, maybe I could be misunderstood: yes, there are separate line pairs for f5.6 and f2.8. Both use just one single continuous line on each side though. They are not 5 or 7 separate things. And yes, for crosspoints you need two more. But: each fo the three f2.8 is just a horizontal line, not a cross (I have no idea if they mix a cross for f2.8 lenses by using an horizontal f2.8 line and a vertical f5.6 line)..

09-13-2018, 11:59 AM	#17
leekil Pentaxian Join Date: May 2016 Photos: Albums Posts: 2,003	Originally posted by Andrea K SPOT or Select on central point are equal, at least on k-1, I checked. it's a bad translation or a wrong sense of the phrase. How did you test it?