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04-16-2014, 05:08 PM   #1
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HDMI output?

I want to use a K-01 for some macro work plugged into a large HD monitor using the HDMI output. I need to be sure that live view outputs the HD signal at the same time as what is on the back LCD, anyone ever tried that? I need that feature for some delicate work because a 3" monitor is a little small for that. Thanks for any infos.

04-16-2014, 05:11 PM   #2
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QuoteOriginally posted by VE2CJW Quote
I want to use a K-01 for some macro work plugged into a large HD monitor using the HDMI output. I need to be sure that live view outputs the HD signal at the same time as what is on the back LCD, anyone ever tried that? I need that feature for some delicate work because a 3" monitor is a little small for that. Thanks for any infos.
To answer your question, yes, the HDMI output just mirrors what's on the LCD. It's going to be at the same resolution however (VGA in the K-01's case).

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04-16-2014, 10:42 PM   #3
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Sorry, but the K-01 does not output live view over HDMI. Once a HDMI cable is plugged in, the camera switches to playback mode only.
04-17-2014, 01:42 AM   #4
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Steve got there first,.... Also, see the Firmware wishlist thread.

However, the USB/AV output does work during recording, and the overlay switches off when you hit record in video mode.
A 14" CRT was more then adequate as a Directors monitor on one of the short films I've shot on my K-01, and sharp enough for good focusing.

05-26-2014, 11:15 PM   #5
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that's pretty great to hear -- it should possible, then, to make an evf from one of those tiny composite lcd screens marketed for the raspberry pi and a loupe in a custom housing? (or, if one happens to find a composite evf, just use that?)
05-29-2014, 10:31 AM   #6
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I'd need a link to a Pi screen to be able to say, but as long as it's a decent resolution screen, such as one of the OLEDs, you should be safe.
05-29-2014, 03:00 PM   #7
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This is interesting, I have a LCD from a Sony portable video game player that I might be able to use in a 'sun resistant' enclosure. This could be a fun project. I've never heard of USB/AV.
05-29-2014, 10:24 PM   #8
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QuoteOriginally posted by PiDicus Rex Quote
I'd need a link to a Pi screen to be able to say, but as long as it's a decent resolution screen, such as one of the OLEDs, you should be safe.
i was thinking specifically of those screens with composite inputs, like NTSC/PAL (Television) TFT Display - 2.0 Diagonal ID: 911 - $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits

05-29-2014, 10:57 PM   #9
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USB/AV,...
Yah, not entirely common.
On the Canon IXUS range the AV port is piggybacked on the USB ports pins, with an autodetection hardware/firmware switch that detect which type of cable it being used - a USB/USB, or USB with AV at the other end, whereby it pauses the USB port and feeds the AV signal out.
On the K-01 the USB port has extra pins, and those do the AV output - they used the 8 pin micro USB plug instead of the usual 4 pin plug - the USB/AV cable does not have the data pins in the plug, only the AV pins.

Part numbers are "Video Cable I-VC28" & "AV Cable I-AVC7"
I use the latter, which has mono audio out as well as the vision.

---------- Post added 30-05-14 at 04:01 PM ----------

Spinach: that screen in the link is about half the video resolution of the K-01's own LCD. At that physical size, I'd want a full VGA B&W screen as a minimum. (VGA is 640x480)
Standard LCD has 921,000 dots, or roughly [( 640x480 ) x3Colours]

Last edited by PiDicus Rex; 05-29-2014 at 11:06 PM.
05-31-2014, 07:30 AM   #10
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on a 2" screen, i'm not certain i'd know the difference, but i'll keep an eye out for something higher res. what resolution does the camera output through a/v out?
05-31-2014, 11:49 PM   #11
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You'd be suprised,..

The screens for broadcast ENG camera viewfinders are around one inch in size, but are very high resolution - in the days of SD with B&W viewfinders, they were about 500 lines of picture, the newer colour OLED HD units are often over 800 lines.
Add to that the optics of the viewfinders, it can be very obvious how much a difference the extra resolution makes.

Personally, I think that's why a most ex-news guys doing film production Focus-Pull are more comfortable working from a monitor then the tape measure - it's mental process and muscle memory to rack focus according to what you're seeing.... and in turn, I think that's also related to why ENG guys don't use AF anywhere near as much as Photographers, we're simply used to being able to focus faster and follow the action, it becomes instinct, you consciously choose what to focus on, but the actual action of doing it is subconscious.

Having the high resolution of a decent viewfinder and loupe makes that far far easier to achieve.
06-19-2014, 06:54 AM   #12
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can't find any indication that ntsc composite output through an rca jack is that high. which is to say: these little screens are the best you will get, that is all the resolution an rca composite port is capable of. and it'll do. again: i doubt i would know the difference. were hdmi an option, i might teach myself the difference. till then, pragmatism wins out over a pipe dream.
06-19-2014, 07:07 AM   #13
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QuoteOriginally posted by PiDicus Rex Quote
Personally, I think that's why a most ex-news guys doing film production Focus-Pull are more comfortable working from a monitor then the tape measure - it's mental process and muscle memory to rack focus according to what you're seeing.... and in turn, I think that's also related to why ENG guys don't use AF anywhere near as much as Photographers, we're simply used to being able to focus faster and follow the action, it becomes instinct, you consciously choose what to focus on, but the actual action of doing it is subconscious.
I have it on good authority that a certain broadcast news network tried to switch to 5D MkII cameras for Remote action shoots. The videographers had huge problems making the transition (only one shooter could focus at all, apparently) citing issues with Focus-Pull. Consequently the project was dropped and the traditional cameras were hauled back out of the closet.

Interestingly, the Producers really liked the 5D color profile so the tech's wrote a software color emulator for post. The Operations Producers spent quite some time training their Production Assistants on the additional production step.
06-20-2014, 04:51 AM   #14
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QuoteOriginally posted by monochrome Quote
The videographers had huge problems making the transition (only one shooter could focus at all, apparently) citing issues with Focus-Pull.
Doesn't surprise me at all - Canon lenses are a Pain In The Ar,. to do Focus Pulls with, impossible to do smooth zooms (they're Varifocal zooms), and have no Iris ring, so that rules our Exposure Pulls too.
It's just another area where the Pentax cameras wearing Sigma glass has a massive advantage.
(All my Zooms are Sigma, they're all Parfocal)
06-20-2014, 01:33 PM - 1 Like   #15
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Ok, it's not HDMI but my cable showed up so I fired up the PS One LCD that I bought years ago (I was thinking about using it for a backup camera screen in the pickup but bought an in dash unit instead). This is going to work fine, it's not a very good picture of the test setup (I'll try again if there is any interest) but the picture on the LCD will work for focusing, etc. It runs on 7.5 volts so I'll need to build a little rechargeable battery pack for it. The LCD is around 5 inches (diagonal) so the whole unit is already fairly small. BTW: Just tested with the K-50 and it works fine with that also.
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Last edited by rmalbers; 06-20-2014 at 04:01 PM.
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