Live view autofocus on Pentax cameras

Hello JeremieB

JeremieB wrote:

KPM2 wrote:

Hello mainoo

mainoo wrote:

KPM2 wrote:

Hello JeremieB

JeremieB wrote:

...

Yes it works very well, I used it with the old M* 300mm lens and I had good success rate with seagulls in flight so not bad Not as good as with AF lens but clearly much better than in pure MF.

Thank you for this info !

best regards KPM2

Thanks so much for this tip. When I was looking into the fantastic focus gimmickry on the Panasonic S1 family (pre-focus, etc) I wondered why this feature had not been implemented. I have the following questions:

My understanding is that this functionality is restricted to the viewfinder because it relies on PDAF and that functionality exists only in the viewfinder for most Pentax cameras. Since the K70 allows PDAF on the LCD, does catch in focus working live view on the K70?

The K3 iii is rather pricey - which sub 1000 Pentax cameras would have the best catch in focus implementation?

Does catch in focus work in burst mode?

Thanks very much.

The catch in focus use the centre AF point. When you half press the shutter release and the camera notice that this centre AF point is in focus, it show that in the OVF and you can do a picture, or when you fully press the shutter release button, the camera do at once a picture or pictures (when in series mode) when the center AF comes in focus . When the centre AF is or get out of focus, the camera do not or stop making pictures.

There used to be a "bug" affecting some K3III (including mine), because of it you could select other AF modes than center spot in CIF with MF lens ! Like sel S and move the points around with the joystick.

That was super excellent, sadly they fixed it

Therefore, with the catch in focus. it's good to have the AF button set to disable AF or AF only by the AF button, because than you are able to do pictures, even when the centre AF is not in focus (for example: you focus to your subject and than you recompose, and do to that the centre AF is now out of focus).

about this

I'm not sure about what you describe, but to do that I would just switch off CIF and consider the focus alert on center then recompose and that's all ?

It takes time to go to the menu and disable the catch in, therefore this is a fast solution when you just use the catch in but you will deactivate it for that you can do the picture.

The main interest of CIF in my opinion is that it triggers only when focus is acquired ? Maybe I miss something.

You can use it for both (normal focusing or as a trigger ) with your old manual lens and you must not always switch on or off the catch in in the menu, when you use the AF button.

I don't think that the K70 has catch in focus in LV, but only users of this camera could give a right answer.

best regards. KPM2

best regards. KPM2