Q, Q10's so Sensitive sensors for Astro-IR will excel in Landscape IR-Photo: Pentax-Q10-Deep-Sky-Objects . Drawbacks of Pentax Q-Q10 despite its 1/2.3" Fabulous imx078 BSI sensor – Multi-Exposure Mode outputs a JPEG, not a RAW file – IR Remote doesn't work w/ Bulb nor Intervalometer – No Wired Remote Control Port on Pentax Q, Q10, Q7, Qs1 – No way to Set the LENR Fully ON or OFF But, Zero Limitations for Hand-Held
Landscape IR-Photography !
More Advantages to the Pentax Q, Q10 over other 1/2.3" BSI cameras – Q - Q10 are unique 1/2.3" BSI cam. to support Interchangeable Lenses. – Q-for-K optional Adapter opens the Q, Q10 to the whole 'K' Lens System. – Q-for-K holds usual 1"1/4 Astro-Filters : PentaxK2Q1in25Filter.html
Pentax Adapter's Leaf Shutter: 1/1000s Flash Sync Speed - 30sec. Bulb/Man. From FF to 1/2.3", Crop ratio is 5.6x - Clic Image, Ctrl+ to Enlarge
– Q-Q10 have a 1Ah Battery, it lasts 1 summer night w/o Live-View abuse – The Q-10 is a CostLess camera, I bought mine for $170€ in spring 2014 – The IR-cut Filter of the Q, Q10 is Easy to Remove : PentaxQ10AstroIR.html
– Then the Q, Q10 are No longer Limited to High-ISO + Tripod + R72-Filter ! This opens the door to Fantastic Hand-Held Landscape IR-Photography : Search.for/?q=Landscape-IR-Photography&tbm=isch See my IR Snapshot taken at ISO-100, f/8, 1/320 sec. at the end of this page. . The AF of the Q, Q10 is unable to reach infinity after their IR-cut filter removal, A good fix to solve that seem to Reduce their Back-Focus / Flange distance :
pentaxforums/136-Pentax-Q/infra-red-IR-conversion-Pentax-Q-Post-4708954
Let's put the dimensions of the IR-filter : 12,6 width x 13,1 height x 0,6mm thick
for who want to replace it with a Clear Glass Filter with Anti-Reflective Coating :
pentaxforums/136-Pentax-Q/infra-red-IR-conversion-Pentax-Q-Post-5085640
Thinner Bayonet Mount to reach infinity Focus
How to thin the Bayonet-Mount of the Pentax Q / Q10 IR-cut filter being 0.6 mm only, you just need to Reduce BF 0.2 Maximum - an Optical Rule useful when you insert / remove a Glass-Filter from a BF Path.
0.2 Maximum, because of Tolerance, if your Q has 0.05 of it...
then you just need to Reduce BF 0.15 mm off . Clic Image, Ctrl+ to Enlarge . In fact, it's Very Easy : only from 2 to 3 hours of High Precision Hand Work : Please, don't begin doing it if you don't feel able to achieve it... It's Your Own Full Responsibility to do it... Or not to...
- Remove the 6 Screws... then the Bayonet
- verify that you find the Same Measurements as mine
... if Not, Write your Own Measurements then Subtract 0.2 / 0.1 mm from them
- for this, you need a Vernier Caliper - a friend of yours owns a Metal Lathe, you just have to remove 0.15 mm from the Front-side of the Bayonet Front-side... then let's try it...
- else you need a 10-11 mm thickness Three Square smooth Hand File .
the 6+3 holes are in the External Crown of the Bayonet Back-side : 2.3 thickness
it'll be reduced to 2.2 all around at the same time than 3 of the following Sectors : turning clockwise, the Internal Bayonet Backside is divided into 6 Sectors starting at "InD33" mark
-1) from ~1:0 to 2:30 AM hole #2 position : 2.4 thickness Sector to reduce to 2.2 (2 from 2:30 to 4:30 AM = 2.7 mm Thickness sector : left as is)
-3) from 4:30 to 6:30 AM hole #4 position : 2.4 thickness Sector to reduce to 2.2 (4 from 6:30 to 8:30 AM = 2.7 mm Thickness sector : left as is)
-5) from 8:30 to 10:0 AM hole #6 position : 2.4 thickness Sector to reduce to 2.2 (6 from 10:0 to ~1:0 PM = 2.7 mm Thickness sector : left as is) . Q10's Bayonet Mount backside: 3x 2.4 mm Sectors + 2.3 mm Ext.Crown to thin Clic Image, Ctrl+ to Enlarge . Backside of the Bayonet : External Crown (6+3 holes) was 2.3 thickness
+ 3 internal thinner Sectors were 2.4 thickness : now all are 2.2 mm
I didn't touch the 3 other Sectors, they still are 2.7 thickness -> 1st Sector begins at " InD33 " mark
I hope the grazing light shows all the details : don't reduce the 2.7 mm Sectors . Thinner Q10s Bayonet Mount: -0.2 and -0.1 this side, -0.1 mm Max other side Clic Image, Ctrl+ to Enlarge . Once you've reached 2.2 mm thickness in these 3 Sectors - initially at 2.4 mm,
and, at the same time all around the External Crown (6+3 holes) initially at 2.3 mm you'll have to thin the Frontside of the Bayonet of 0.05 mm to get started
then carefully Clean the Bayonet and remount it with its 6 screws don't tighten too much, the screws are screwed into plastic put the 5-15 mm Zoom-lens, is your AF working ?
Do you hear the AF-Confirmation 'BIP' ?
No, you'll have to go for 2.1... Note : the 9-15 mm range works first, the 5-9 mm range works w/ a thinner Mount ! .
My Q10 is fine at 2.15 thickness, I'll confirm this when summer temp at 35°C+...
if your Own Measurements minus 0.15 gives you 2.15... go for 2.15 ?
