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09-22-2014, 06:40 AM   #1
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Using a Q with a conventional Astro scope.

I'm use my 560mm Astro scope with a T adapter with good results on my K5.
With a new Q body for only 110 bucks plus a T adapter I thought I'd try the same setup with a Q.

However...

...on the K5 I have to go to the custom menu and set custom setting number 27 "using aperture ring" to permitted in order to make the shutter work.

The problem is when looking at the Q user manual no such setting is available.

So what do you think - can I setup my T mounted astro scope on the Q to work as well as it does on the k5 or not?
BTW Q to T mount adapters are available.


Last edited by wildman; 09-22-2014 at 06:48 AM.
09-22-2014, 06:47 AM   #2
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With updated firmware the Q will ask for a focal length when you adapt a non Q lens.
Not sure what adapter you will need but I'm thinking a K-Q if you are adapting to the K-5.
Electronic shutter will work if not using the OEM k-q adapter which has a leaf shutter.
09-22-2014, 07:05 AM   #3
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QuoteOriginally posted by crewl1 Quote
With updated firmware the Q will ask for a focal length when you adapt a non Q lens.
Not sure what adapter you will need but I'm thinking a K-Q if you are adapting to the K-5.
Electronic shutter will work if not using the OEM k-q adapter which has a leaf shutter.
The matter of a physical adaptation of the scope to the Q is no problem.

Amazon.com : Fotodiox Lens Mount Adapter, T-mount Lens to Pentax Q-Series Camera, fits Pentax Q Mirrorless Cameras : Camera & Photo

Just screw one end of the adapter into the back end of the scope and snap the other end into the Q.

My question is if the damn shutter will work without having that same custom setting that is required with the K5,
Is shutter system of the Q much different than on a conventional Pentax DSLR like the K5?

Last edited by wildman; 09-22-2014 at 07:14 AM.
09-22-2014, 07:13 AM   #4
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It will fire. It's the same as using any other adapted lens on the Q - no setting needed. The Q uses a shutter simulator (i.e. just a reading of the sensor for a short period of time) on adapted lenses without the OEM PK adapter, which has, like the Q lenses themselves, an internal mechanical shutter.

The Focal Length setting referenced above is only for sensor stabilization, which you presumably will have turned off anyway for a tripod-mounted scope. I've used the Q on a T adapter successfully on a microscope, so the telescope should be no problem, presuming you can get it to focus on the sensor.

QuoteOriginally posted by wildman Quote
The matter of a physical adaptation of the scope to the Q is no problem.

Amazon.com : Fotodiox Lens Mount Adapter, T-mount Lens to Pentax Q-Series Camera, fits Pentax Q Mirrorless Cameras : Camera & Photo

Just screw the adapter into the back end of the scope and snap the Q to the other end of the adapter.

My question is if the damn shutter will work without having that same custom setting that is required with the K5,
Is shutter system of the Q much different than on a K5?


09-22-2014, 07:19 AM   #5
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QuoteOriginally posted by wildman Quote
The matter of a physical adaptation of the scope to the Q is no problem.

Amazon.com : Fotodiox Lens Mount Adapter, T-mount Lens to Pentax Q-Series Camera, fits Pentax Q Mirrorless Cameras : Camera & Photo

Just screw the adapter into the back end of the scope and snap the Q to the other end of the adapter.

My question is if the damn shutter will work without having that same custom setting that is required with the K5,
Is shutter system of the Q much different than on a K5?
It is an entirely different shutter. The mechanical leaf shutter is built into certain lenses and the OEM adapter, not the body.
The electronic shutter that turns the sensor on and off is used instead when leaf shutter is not present.
It has limitations for long exposure as to how long it stays open, and also it has a sequential shutoff for the sensor lines that could cause issues with moving subjects.
If your application is astro photography check the Astro thread for more info.
If it is daylight telephoto check the Reach thread.
09-22-2014, 07:31 AM   #6
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QuoteOriginally posted by dcshooter Quote
It will fire. It's the same as using any other adapted lens on the Q - no setting needed. The Q uses a shutter simulator (i.e. just a reading of the sensor for a short period of time) on adapted lenses without the OEM PK adapter, which has, like the Q lenses themselves, an internal mechanical shutter.
If so I might as well have them throw this in and see what my conventional K mount glass will do on the Q as well?

Amazon.com : Fotodiox Lens Mount Adapter, Pentax K Lens to Pentax Q Series Camera : Adapter Q For Pentax Q : Camera & Photo

---------- Post added 09-22-14 at 09:48 AM ----------

QuoteOriginally posted by crewl1 Quote
If it is daylight telephoto check the Reach thread.
Where is that? - I did a search and can't find it.
09-22-2014, 08:20 AM   #7
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For adapted lesnes reference see the sticky https://www.pentaxforums.com/forums/136-pentax-q/209474-adapted-lenses-tested...ce-thread.html

For telephoto see https://www.pentaxforums.com/forums/136-pentax-q/173602-reach-q-images.html

---------- Post added 09-22-14 at 08:24 AM ----------

QuoteOriginally posted by wildman Quote
If so I might as well have them throw this in and see what my conventional K mount glass will do on the Q as well?

Amazon.com : Fotodiox Lens Mount Adapter, Pentax K Lens to Pentax Q Series Camera : Adapter Q For Pentax Q : Camera & Photo


---------- Post added 09-22-14 at 09:48 AM ----------
That adapter will not work if you have lenses without aperture such as DA type - try this instead
http://www.amazon.com/Fotodiox-Adapter-Aperture-Pentax-Series/dp/B006NQ9T34/...s=fotodiox+Q-K
09-22-2014, 10:12 AM   #8
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QuoteOriginally posted by wildman Quote
If so I might as well have them throw this in and see what my conventional K mount glass will do on the Q as well?

Amazon.com : Fotodiox Lens Mount Adapter, Pentax K Lens to Pentax Q Series Camera : Adapter Q For Pentax Q : Camera & Photo

---------- Post added 09-22-14 at 09:48 AM ----------




I have the same adapter and it works great with old lenses WITH an aperture ring. You are limited to a 2sec exp. time though, and a tripod mount is a must for anything over a 100mm lens. The Pentax brand converter is really the best way to go if you've got the $199.

09-23-2014, 02:26 AM   #9
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QuoteOriginally posted by crewl1 Quote
That adapter will not work if you have lenses without aperture such as DA type - try this instead
Amazon.com : Fotodiox Lens Mount Adapter with Aperture Dial, Pentax K Lens to Pentax Q Series Camera : Camera & Photo
I can assume that this one will work as well on either type of lens or should I get both?
Also I have the original OEM Pentax K mount to m42 adapter and I can see no reason why this couldn't be snapped into it and also use my Taks with it?
09-23-2014, 03:42 AM   #10
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The Fotodiox with aperture ring will work with all K mount lenses. It has the aperture ring to adjust newer aperture ringless K mont lenses. Older K mount lenses with aperture rings will also work. To use the screw thread Taks, the flush mount screw adapter can be used with the Fotodiox adapter.

If you do a lot of astronomical work with your astro scope, the 2 second shutter speed limit will become a major limitation. At this point the Pentax made P-K adapter will be worth its weight in gold. It is nice to shoot longer than 2 seconds.

A wireless remote is also very useful with high magnification lenses. Vibration is the enemy. Having the Q mirrorless camera is a huge benefit.


Have fun.
thanks
barondla
09-23-2014, 06:03 AM   #11
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QuoteOriginally posted by barondla Quote
The Fotodiox with aperture ring will work with all K mount lenses. It has the aperture ring to adjust newer aperture ringless K mont lenses. Older K mount lenses with aperture rings will also work. To use the screw thread Taks, the flush mount screw adapter can be used with the Fotodiox adapter.
Good to know.

QuoteOriginally posted by barondla Quote
If you do a lot of astronomical work with your astro scope, the 2 second shutter speed limit will become a major limitation. At this point the Pentax made P-K adapter will be worth its weight in gold. It is nice to shoot longer than 2 seconds.
No. Daylight terrestrial only - BTW will almost always be used on a heavy fork mounted tripod.

QuoteOriginally posted by barondla Quote
A wireless remote is also very useful with high magnification lenses. Vibration is the enemy. Having the Q mirrorless camera is a huge benefit.
I have both the OEM Pentax wired (Cable Switch CS-205) and "F" remote for the K5, will ether of these work on the Q?

Last edited by wildman; 09-23-2014 at 06:14 AM.
09-23-2014, 06:28 AM   #12
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I'm not sure about the wired remote off the top of my head, but the F remote definitely does work.

QuoteOriginally posted by wildman Quote

I have both the OEM Pentax wired (Cable Switch CS-205) and "F" remote for the K5, will ether of these work on the Q?
09-23-2014, 06:58 AM   #13
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There is no port for wired remote on any Q body.
All iR remotes for Pentax will work.

Since I always forget my remote I use 2 sec delay instead
09-23-2014, 07:09 AM   #14
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Plus there is an IR sensor on the front and back of the Q, so you don't have to point the remote at just the front of the camera.
09-23-2014, 07:30 AM   #15
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FYI: while there is an IR sensor on the rear, for some reason its performance is substantially inferior to the one on the front. Usually you have to be within just a few inches to get it to register.

QuoteOriginally posted by Kendigitize Quote
Plus there is an IR sensor on the front and back of the Q, so you don't have to point the remote at just the front of the camera.
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