Topic: Live Preview on IQ Series (Read 5070 times)

lance_schad · « **on:** July 26, 2011, 11:39:02 am »

I just had the opportunity to try out the "Live Preview" untethered on one of the Phase One IQ180V systems that we received with the newest firmware installed .

I spent a few minutes with it (will have more time later), but the performance is pretty good.

It is accessed via the lower bottom right hand menu (see image below). You click on the movie camera icon, then open the shutter and the image appears.

We shot out our window of our office into the daylight and we had the aperture set @ f/11 and the preview was not blown out at all.
Then we put a ND filter and set it to f/2.8 and it worked well.

You can zoom all the way up to 400% in the Live Preview mode just like you can do in the full screen preview.

More info to follow as we get some more time to explore it.

But in my opinion it is usable and exceeded my expectations.

Lance

bertlwolf · « **Reply #1 on:** July 26, 2011, 12:22:09 pm »

Lance, thank you for the information, whats about the focus mask in Liveview?

Best regards

Wolfgang

lance_schad · « **Reply #2 on:** July 26, 2011, 12:55:14 pm »

No focus mask in Live Preview, just like it is not active in the zoom preview.

Also noticed that IIQS is enabled in Firmware 1.3.3 .

Lance

geesbert · « **Reply #3 on:** July 26, 2011, 01:15:20 pm »

is it in functionality comparable to a dslr's live view, what are the refresh rates and how long can you keep it running?

TH_Alpa · « **Reply #4 on:** July 26, 2011, 01:40:59 pm »

Hi Lance,

- If I understand it right, the function does not involve the shutter, means it is done with continuously open / used f/stop?

- What is the refresh rate?

- Can it be switched to B&W? And in this case, what is then the refresh rate?

Thanks
Thierry

Quote from: lance_schad on July 26, 2011, 11:39:02 am

... You click on the movie camera icon, then open the shutter and the image appears. ...

pindman · « **Reply #5 on:** July 26, 2011, 04:22:40 pm »

Is this firmware available for download? Version 1.19 is the most recent listed on the Phase One website.

Thanks.

michael · « **Reply #6 on:** July 26, 2011, 06:04:42 pm »

I've been testing it for a while, and I'm not as enthusiastic as Lance.

Once the new firmware is released I'll have more to say about it.

Michael

Doug Peterson · « **Reply #7 on:** July 26, 2011, 06:44:37 pm »

Quote from: pindman on July 26, 2011, 04:22:40 pm

Is this firmware available for download? Version 1.19 is the most recent listed on the Phase One website.

Not yet. Soon.

marcmccalmont · « **Reply #8 on:** July 27, 2011, 12:03:59 am »

Quote from: michael on July 26, 2011, 06:04:42 pm

I've been testing it for a while, and I'm not as enthusiastic as Lance.

Once the new firmware is released I'll have more to say about it.

Michael

Is it good enough to get rid of the focusing glass and loupe on a technical camera?
Marc

BernardLanguillier · « **Reply #9 on:** July 27, 2011, 12:39:13 am »

Quote from: michael on July 26, 2011, 06:04:42 pm

I've been testing it for a while, and I'm not as enthusiastic as Lance.

Once the new firmware is released I'll have more to say about it.

Michael,

It would be interesting to have info about battery life in cold weather.

When it is finalized, could you please leave your back with live view on in your freezer at -5 or -10C for a few hours and let us know the outcome?

Thanks.

Cheers,
Bernard

michael · « **Reply #10 on:** July 27, 2011, 05:56:35 am »

Battery life is one of the issues. It's extreemly poor. Under about 15 minutes at room temperature when running continuously.

Michael

BernardLanguillier · « **Reply #11 on:** July 27, 2011, 06:14:16 am »

Quote from: michael on July 27, 2011, 05:56:35 am

Battery life is one of the issues. It's extreemly poor. Under about 15 minutes at room temperature when running continuously.

OK, I'll stick to my D3x.

Now to be fair, the amount of time needed to focus accurately an image might not be that super long, but you need at least 15 seconds per image.

Cheers,
Bernard

fredjeang · « **Reply #12 on:** July 27, 2011, 07:03:49 am »

Let me see if I understand well,

This is a preview and not a live view right?

that means, correct me if I'm wrong, that any correction needs another preview to be verified.

If so, usefull for stills subjects but not exciting either.

But the battery life Michael is talking about when runnin makes it pretty much unusable, no need to say what would happen in low temp reading MR concern.

Doug Peterson · « **Reply #13 on:** July 27, 2011, 09:17:28 am »

Quote from: fredjeang on July 27, 2011, 07:03:49 am

This is a preview and not a live view right?

Don't get caught up in semantics.

This is basically the same CCD live preview as exisiting backs have had for several years when tethered, but with some modest improvements to quality and speed, and able to be used on the LCD of the digital back without tethering. Frame rates of a "few per second" and ghosting/quirks on moving objects, and some limitations on the amount of light (hence the need for ND filters when in bright sunlight).

Not usable for hand-held, sports, portrait, fashion, or other moving shooting. Low battery life.

I'll wait until I've had more hands-on time to make conclusions, but the realistic expectation here is the use of the live view as a compositional tool on cameras without mirrors (e.g. technical/view cameras) and possibly for live-focusing in the field. For that niche it could be very important.

bradleygibson · « **Reply #14 on:** July 27, 2011, 09:25:22 am »

Roughly what is the refresh rate?

michael · « **Reply #15 on:** July 27, 2011, 10:14:15 am »

It is real Live View, not a preview.

The frame rate can be varied between 1 and 4FPS.

Battery life is about 30-40 minutes.

Michael

lance_schad · « **Reply #16 on:** July 27, 2011, 11:59:41 am »

Sorry yes it is Live View.

I also wanted to clarify that this version of the firmware which includes Live View is currently on the IQ180V mount only.

It is my understanding there will be a future release of firmware for the other IQ models that will include this functionality.

Lance

Steve Hendrix · « **Reply #17 on:** July 27, 2011, 01:22:16 pm »

Quote from: michael on July 27, 2011, 10:14:15 am

It is real Live View, not a preview.

The frame rate can be varied between 1 and 4FPS.

Battery life is about 30-40 minutes.

Michael

Yep - while most of my discussions with our clients has centered around the quality of the video (which is roughly what we expected, considering our experience with tethered Live View from all the digital backs), I hadn't really considered what could be the more pertinent issue, which is the battery life. I can see this improving, though probably not dramatically. So, up front, you'll know to use judiciously, and it may be more useful in the fall/winter than in the spring/summer.

Steve Hendrix

michael · « **Reply #18 on:** July 27, 2011, 01:36:43 pm »

I'll have a review online, along with a second opinion by Mark Dubovoy, as soon as the new firmware is officially announced.

Michael

Doug Peterson · « **Reply #19 on:** July 28, 2011, 09:56:01 am »

Phase One IQ Series Firmware 1.33 is now availabe for download

Doug Peterson (e-mail Me)
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Author Topic: Live Preview on IQ Series (Read 5070 times)

fredjeang