Re: Well this is odd but fun

OK, I think I get it, with the Nikon the mirror does something at the
start, I can shoot 100 frames and it doesn't change again until I
stop.

On 3/4/18, Alan Corey <[email protected]> wrote:
> Yes, I noticed poking around in the documentation that there's a
> capture with a CameraFileType of preview then there's
> gp_camera_capture_preview().  No, I'm mostly a Nikon fan, picked this
> up for $25 to take wildlife pictures with a Raspberry Pi on a battery
> and Gphoto.  Expendable in case some bear steals it. :)
>
> I thought I was getting the images that were sent to the viewfinder.  Oh
> well.
>
> On 3/4/18, Marcus Meissner <[email protected]> wrote:
>> Hi,
>>
>> (I kin dof assumed you used a EOS, but the Powershot also has a single
>> "get preview image" command that it sends to the camera.
>>
>> For DSLRs, the mirror will be flipped up for preview capture,
>> probably thats what you noticing.
>>
>> Ciao, Marcus
>> On Sun, Mar 04, 2018 at 03:39:05PM -0500, Alan Corey wrote:
>>> Thanks, camera buffering is significant.  I'm mostly working with a
>>> Canon PowerShot S70 which I'm planning to use for this.  When I tried
>>> my Nikon D5200 instead I immediately get the current image.  Which is
>>> 640x424 BTW.
>>>
>>> I'm surprised it works on the Nikon at all, I wasn't planning on that.
>>> On the Nikon it doesn't seem like a preview image.  If I hold the
>>> camera I can feel mechanical movement like maybe the mirror and
>>> shutter.  I'm not doing anything camera-specific except
>>> canon_enable_capture.  Maybe this Nikon doesn't do previews, I didn't
>>> look at the chart.   It's probably not important, I'm not going to
>>> stick my D5200 out in a birdfeeder anyway.
>>>
>>> On 3/4/18, Marcus Meissner <[email protected]> wrote:
>>> > Hi,
>>> >
>>> > well, we always read the preview from the camera, so what you see
>>> > there is what the camera gets us.
>>> >
>>> > Not sure how those cameras buffer it, but the idea is usually
>>> > to read preview images in a quick succession ;)
>>> >
>>> > Ciao, Marcus
>>> >
>>>
>>>
>>> --
>>> -------------
>>> No, I won't  call it "climate change", do you have a "reality problem"?
>>> -
>>> AB1JX
>>> Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach
>>>
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>>
>> --
>> Marcus Meissner,SUSE LINUX GmbH; Maxfeldstrasse 5; D-90409 Nuernberg; Zi.
>> 3.1-33,+49-911-740 53-432,,serv=loki,mail=wotan,type=real
>> <[email protected]>
>>
>
>
> --
> -------------
> No, I won't  call it "climate change", do you have a "reality problem"? -
> AB1JX
> Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach
>


-- 
-------------
No, I won't  call it "climate change", do you have a "reality problem"? - AB1JX
Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach

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