Recent Posts

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Chronos User Discussion / Re: F-stop when using lenses from 35 mm camera
« Last post by Simon on October 06, 2017, 09:56:01 PM »
Hi - crop factor affects both focal length and f-stop - so f/4 on a 35 mm sensor will look like f/16 on the Chronos' sensor.
Chronos User Discussion / F-stop when using lenses from 35 mm camera
« Last post by ratas calientes on October 06, 2017, 08:44:13 PM »
Folks - first post here - my camera arrived a few weeks ago.  Still rounding up other gear to put it to use.

Question . . . I already have a few old FD-mount (Canon) lenses . . . particularly a Vivitar Series 1 28-105 mm and a 70-210 mm.  I also have a C-FD adapter.  On using these lenses . . .  does the f-stop change?  If I set the Vivitar lens to f/4, does that still equate to f/4 on the Chronos?

Thanks - Glenn
Chronos User Discussion / Re: C moutn adapotor
« Last post by tesla500 on October 06, 2017, 12:04:11 PM »
Hi Scott,

Check if your adapter has a facility to rotate the C mount relative to the B4 mount, sometimes you need to loosen a few screws to do this. If it doesn't support that, you can install the adapter on the camera, then loosen the set screw on the bottom of the camera using the included allen key. This lets you rotate the entire mount ring and lens/adapter assembly relative to the camera body. You can then re-tighten the set screw with the lens oriented correctly. Not that this will effect backfocus, you'll need to check your backfocus after doing this, and potentially rotate the lens by full turns to get the backfocus set properly.

As far as I know there is no standard orientation for a C mount, the lens will end up at an arbitrary rotational position when installed. Some lenses such as the Computar 12.5-75mm can be rotated relative to the mount to correct this, by loosening a black ring near the lens mount.

Software Dev / Re: Initial feedback
« Last post by danielmiester on October 05, 2017, 07:33:25 PM »
I've found several cases where I intuitively wanted the scroll wheel to control the value of a UI element.
It'd be nice if the jog wheel supplied simple up and down actions against whatever UI element was currently focused.
Software Dev / Re: Suggestion: Reverse direction of buffer bar
« Last post by danielmiester on October 05, 2017, 07:26:38 PM »
Add me as a plus 1.
I was just using the camera again tonight, and it is a bit counterintuitive.
Software Dev / NTH: [Save window] aligned mark in and out numbers, and % done
« Last post by danielmiester on October 05, 2017, 06:47:07 PM »
Currently the mark in and mark out numbers are not aligned, and they are in opposite order than I intuitively expect them to be.
Also it would be nice to have a %done indication while saving.
And, considering it seems to save at a fairly constant rate, I'd like to see a ETA to completion display too.
While I'm considering it, it'd be nice to also have an optional beep on completion
Chronos User Discussion / Re: Focusing Troubles
« Last post by Camoit on October 05, 2017, 05:04:38 PM »
You can always print out a focus target and set the back focus. Mine was off just a touch. Bu that is something I have always checked since I do a lot of CCTV camera set up. They always need to be set since the old cameras did not have a lens.
Chronos User Discussion / Re: Focusing Troubles
« Last post by John DeLonghi on October 05, 2017, 06:39:53 AM »
Difficult to say with that subject matter. You other videos look OK apart from the red colour cast.
Chronos User Discussion / C moutn adapotor
« Last post by scottmei on October 05, 2017, 04:22:56 AM »
Hi guys, this is my first post here, and received my Chrono 1.4 camera few days back, and purchased a fotodiox C to B4 mount adapoter to use my Zeiss Digi Zoom lens, but after screwed up the adapter, it becomes upside down. so when I mount the lens on, the lens is also upside down which won't be able to put the lens support underneath.

I tried the adapter on other c mount camera, but the adapter is correct. so I wonder if the CS to C mount adapter has a different thread count than usual camera? I have a brand new 16mm vintage eyemo camera bought from an auction as a collector item.

if the thread has different count on the Cs to C mount adapter, would it be possible to talk to technician at krontech to solve this issue? thanks. I appreciate any inputs. thanks!
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by Explodify on October 04, 2017, 07:23:55 PM »
We film usually couple videos per week with the Chronos but I really like this video that we filmed couple days ago

We filled up some "balloons" with non newtonian fluid and shot them with the crossbow. I think I used something like 3000 fps on most of the shots.

Very nice! Love the channel my friend.
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