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Forum: Flashes, Lighting, and Studio 4 Days Ago  
AF Assist/Modelling Light Strategy
Posted By Medex
Replies: 24
Views: 596
Eddy, I don't know about modeling light levels adjustment on AD200Pro, but AD400Pro has capability to adjust from 20 to 100 percent. In case I shoot in darker environment, I use modeling light to adjust position of strobe as well as to autofocus assist. Yes, LED at max power drains battery of the strobe quite quickly, one time I shot with modeling light almost always on, so, just about 2 hours long before battery was empty. But it could be possible to use lower levels of modeling light. I hope AD200Pro can do that as well. Any way, if you use modeling light extensively, buy second battery for your AD200Pro. BTW, I did order power block for my AD400Pro because I use modeling light quite extensively during photoshooting. In this case I need electrical cable as well, but this is not problem when I shoot in "studio".

Forum: Pentax Medium Format 12-02-2019, 11:07 PM  
Vertical line across Pentax 67 negatives
Posted By Medex
Replies: 21
Views: 933
Could you say, what exposure time was in the first picture? I would like to guess - 1/50 s.
Forum: Pentax Medium Format 12-01-2019, 11:40 PM  
Vertical line across Pentax 67 negatives
Posted By Medex
Replies: 21
Views: 933
Your camera has horizontal shutter. It seems to me that sliding window during shooting process could be slowed down for a very short time. It causes some underexposure (darker lines as well as a little darker part of the frame). This is only my opinion.
Forum: Troubleshooting and Beginner Help 11-24-2019, 07:01 AM  
K3 Godox v1 compatibility
Posted By Medex
Replies: 2
Views: 320
Godox has V1 for Pentax, so, it should be compatible. For best answer search for Manual - compatibility should be described there

Godox V1 Pentax TTL On-Camera Round Flash Speedlight for Pentax - FOMITO.SHOP
Forum: Pentax K-1 10-26-2019, 01:23 AM  
Live view focus
Posted By Medex
Replies: 4
Views: 553
And you can use Face detection autofocus in case you shoot people. The face and two eyes should be visible to get yellow rectangle on it. Camera focuses right on the face/eyes. Actually it is eye autofocus.
Forum: Flashes, Lighting, and Studio 10-25-2019, 11:41 AM  
Pentax verses Godox
Posted By Medex
Replies: 26
Views: 1,248
Look at Godox flash compatible with Godox X-Pro P trigger. You will be able to trigger more flashes in case you will move to more advanced photography.
Forum: Pentax SLR Lens Discussion 10-15-2019, 12:42 AM  
Ultraviolet capable Pentax K lenses for K-1
Posted By Medex
Replies: 5
Views: 566
You should ask Klaus, D1N0 user here. He is expert in UV photography and have dedicated website
Forum: Pentax K-1 10-11-2019, 02:53 AM  
2000 multiple exposures?
Posted By Medex
Replies: 23
Views: 1,165
I used 40-80 exposures for long exposure imitation with 15-30/2.8 lens without ND filter.
Forum: Pentax SLR Lens Discussion 10-10-2019, 10:47 AM  
15-30mm Filter Options
Posted By Medex
Replies: 24
Views: 771
before buing filters try composite mode on Pentax K-1 (if you own this camera, maybe other have that option too).
Forum: Pentax K-1 10-10-2019, 08:45 AM  
K-1 shutter stuck
Posted By Medex
Replies: 8
Views: 2,726
I experienced the same problem. Here is the info you maybe can try if your shutter is still not repaired.

„Sometimes a power interruption can jog the shutter open if its stuck, so what you will do is:
1. Set your camera to manual
2. Turn off any features that might drain the battery (image stabilization, flash, LCD view ...etc)
3. Set your shutter to the slowest speed possible (15-30 seconds)
4. Take a picture
5. Open the battery door during the exposure and then close it right up (I removed battery and pushed it inside again). The momentarily power interruption during exposure time might be able to jog your shutter open.
6. Repeat until your shutter un-jams.
I tried this trick and it helped from the first attempt. Yahoo!!!
Forum: Pentax DSLR Discussion 10-10-2019, 02:46 AM  
Manual focus lens front focusing results on only one of your bodies?
Posted By Medex
Replies: 49
Views: 1,472
If you did focus in the center of an image (globe), then your lens BACK focuses, because things in focus are behind the prominent part of the globe.
I use manual focus projection lenses adapted to Pentax mount on K-1. They all have some back or front focus. But let say, Revuenon 55/1.2 focuses perfectly without any fine focus adjustment. So, in your case I would do some test on tripod, because focus zone is so narrow at f1.2 that any not perceptible movement of your body can influence the result.
Mount your camera on tripod, do manual focusing through the OVF until you get focus confirmation (Green hexagon in the view finder), then check your focus in the Live View mode with magnification to decide you have right or wrong focus, front or back focus. Repeat the test several times to see if the misfocus have the same tendency and make Fine focus adjustment (Apply All - for manual focus lenses), but keep information about that somewhere on you lens (sticker ar similar), because it is applicable to this lens only.
Forum: Troubleshooting and Beginner Help 10-09-2019, 05:36 AM  
'SMC Pentax-D FA 100mm F2.8 Macro' intermittent viewfinder black photo
Posted By Medex
Replies: 15
Views: 935
try to use your lens 100/2,8 in non-A setting, e.g. at f4. In case you have aperture block failure, pictures will still be good, not dark, because aperture will not go beyond f4

---------- Post added 10-09-19 at 03:39 PM ----------

BTW if you have aperture block repaired earlier, the failure can repeat because solenoid that was replaced can be the same bad quality as first one.
Forum: Flashes, Lighting, and Studio 10-09-2019, 05:31 AM  
Godox X2T and the DELAY setting
Posted By Medex
Replies: 4
Views: 452
Ok, I did read article on wikipedia (Understanding HyperSync and High Speed Sync - PocketWizard Wiki) and another about hypersync (Hypersync easily explained by Fabio Gloor - Part 2 - broncolor News) and now I have impression that author of second article misused hypersync term with HSS.
What is the real difference between these two methods and why you want hypersync instead oh HSS?
Forum: Troubleshooting and Beginner Help 10-09-2019, 03:40 AM  
K500 - Fall killed diaphragm controller - It whorts to repair it?
Posted By Medex
Replies: 17
Views: 520
or buy used K-5II / IIs.
Forum: Flashes, Lighting, and Studio 10-09-2019, 02:33 AM  
Godox X2T and the DELAY setting
Posted By Medex
Replies: 4
Views: 452
maybe 3,5 ms delay would be good for ambient portaits or pictures, when you need darker sky (if frame is positioned properly)?
BUt taht is for 1/400s.
Forum: Pentax Film SLR Discussion 10-08-2019, 10:40 PM  
An amazing MZ-S feature
Posted By Medex
Replies: 21
Views: 905
Could you describe the whole procedure, please?
Let say I shor 10 frames and rewinded the film to the canister, then removed it. After some time I insert the same canister into the camera. What should I do to forward the film to 11th frame?
Forum: Pentax K-1 10-08-2019, 09:23 PM  
K-1 light close to medium format
Posted By Medex
Replies: 16
Views: 1,296
Pentax K5-IIs outperforms Sony A9 in max PDR, even other parameters are lower. :) APS-C vs. FF. What it means? Maybe that K-5IIs ar low ISO is equal to Sony's flagship model for photographic dynamic range? According to curve, that is true for ISO80 (Pentax) vs ISO 100 (Sony). But things are opposite at higher ISOs.
Forum: Pentax K-1 10-06-2019, 01:30 AM  
I really don't think the auto-focus is that bad on the K-1
Posted By Medex
Replies: 33
Views: 2,235
IMO back button focusing do nothing better than shutter button focusing. You can programm your shutter button for release-priority focusing (then push the button and camera will shoot just after the focus is accuired), but back button does not work in such priority.
Anyway, backh button focusing is very good thing when you shoot static or almost static objects/subjecs - in this case you don't need to re-focus after every shot.
Forum: Pentax K-1 10-06-2019, 01:23 AM  
K1 and SDXC UHS-1 Memory Card Read Write Speeds
Posted By Medex
Replies: 7
Views: 489
The faster cards will be "faster" not on your K-1, but on your PC downloading pictures.
Forum: Pentax SLR Lens Discussion 10-02-2019, 03:24 AM  
50-135 mm/f2.8 used for 600 or new for 850 ?
Posted By Medex
Replies: 6
Views: 374
350-400 euro for used lens
Forum: Pentax News and Rumors 09-13-2019, 07:25 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By Medex
Replies: 869
Views: 50,447
Do you accept the fact that shake reduction does not work with electtonic shutter and there is flickering when shooting indoors in artificidl light? You can't shoot in series, HDR, etc.
Forum: Pentax SLR Lens Discussion 08-21-2019, 02:47 AM  
Which Star Lens you want a renew and HD version mostly now?
Posted By Medex
Replies: 21
Views: 1,118
135mm f1.8 and 85mm f1.4. Would be my two favorite lenses for portraits.
Forum: Pentax News and Rumors 07-12-2019, 09:46 AM  
Posted By Medex
Replies: 79
Views: 8,316
I can't speak for sure about UV photogtaphy, but Klaus Schmit can. He is in that field and as I remember he uses special lenses (quartz), because ordinary multicoated lenses block UV.
Forum: Pentax News and Rumors 07-12-2019, 06:34 AM  
Posted By Medex
Replies: 79
Views: 8,316
Yes. I agree. But with full spectrum camera you have obligation to use external filters. Some wide angle lenses as 15-30 and Samyang 14mm do not accept round filters. 100 mm or 150mm infrared ones will cost more than gold. Ant with external filters you cant focus through the optical viewfinder what is less convenient.
Here systemic cameras with electronic viewfinder win.
Forum: Pentax News and Rumors 07-12-2019, 06:05 AM  
Posted By Medex
Replies: 79
Views: 8,316
I completely agree. Special products should be abailable to customers as well.
Now we have KolariVision, LifePixel etc. that do conversion of many cameras, but there are some difficulties with Pentax brand. Not long time ago even Kolarivision did not provide conversion service of Pentax APSC models. Maybe due to relative rarity of pentaxians who would like to shoot infrared. But in reality there are no problems to make conversion even at home. I did it 3 times.
I would like to have dedicated IR K-1, but even Kolarivision does not provide this service for relatively big price. They can do full spectrum conversion only. It is pitty.
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