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Forum: Pentax KP 06-28-2020, 07:15 AM  
KatzEye focusing screen fits KP
Posted By THoog
Replies: 2
Views: 316
Pentax used the same screen for the K-7, K-5, K-30, K-50, K-500, K-5II, K-5IIs, K-3, K-3II, K-S1, K-S2, K-70, and KP.
Forum: Flashes, Lighting, and Studio 06-15-2020, 06:49 AM  
Minolta, Pentax and Olympus Dedication the same?
Posted By THoog
Replies: 18
Views: 931
I want to say that is the case - that I've read or found that all three Ready pins are connected, but it's been so long that I don't remember. The technology is so simple that it could only be duplicated today with a quad-core ARM processor running Linux. 😀
Forum: Flashes, Lighting, and Studio 06-14-2020, 01:44 PM  
Minolta, Pentax and Olympus Dedication the same?
Posted By THoog
Replies: 18
Views: 931
Are you sure that's Sigma and not Sears? I researched all this stuff back in 2014 when I wrote my reviews for the 2800-D and 550FD, and want to say Sears, but don't remember (or really care) any more. I do remember seeing C/N/R and C/N/R/S versions of some Vivitar flashes.
Forum: Flashes, Lighting, and Studio 06-14-2020, 11:35 AM  
Minolta, Pentax and Olympus Dedication the same?
Posted By THoog
Replies: 18
Views: 931
This is because no matter how many times you say that 1980s-era TTL and p-TTL are completely different technologies, people still confuse them. Pentax DSLRs later than the ist-DS simply do not support the older TTL method to tell the flash when to shut off. So the flash fires at full power, and the camera does whatever it does, and auto-exposure and auto-ISO introduce so many variables that it might appear to work.

I am not where I can get to my collection of Vivitar flashes, but I think I recall something like seven pins on the bottom of the M/P/O models. As Alex645 says, each brand had their own dedicated pin locations, and the Vivitar 550FD addressed this by having ALL of the pins for all of the supported brands. If Vivitar could have stuffed the pins for Canon, Nikon, and Ricoh in there without conflict, they would have made only one version of the flash, instead of two (M/P/O and C/N/R).

Edit: There are three versions of the 550FD - M/P/O, C/R, and N. Some of the other, non-TTL Vivitar flashes of the period only had M/P/O and C/N/R versions.


The answer is NO. Because each brand has their own "Flash Ready" pin, and that is the ONLY interface from the flash to the camera, a dedicated Minolta or Olympus flash is not going to send a ready signal to a Pentax. However, if the flash has a self-contained auto-mode, where the flash (not, Not, NOT the camera!) determines how much light it sees and shuts off automatically, then the center/FIRE pin on the hotshoe may be sufficient. You would have to ensure that the flash is ready before attempting to take a shot. That said, I have no idea if a dedicated Minolta or Olympus (or Canon or Nikon, for that matter) flash from this era would put signals on any other pins that might confuse a modern Pentax DSLR. The usual warnings about trigger voltages apply - I have never had problems with the 550FD/2800-D family, but the 2800 (different from 2800-D) is notorious for high trigger voltages.

But I will say it again: with this style of "dedicated" "automatic" flash, the flash is NOT changing the settings on the camera. You can move the sliders on the back of the 550FD until your fingers bleed, but the flash does not communicate anything to the camera other than "ready" - and how the camera reacts to that "ready" signal depends on the camera. The sliders on the flash are just a table of settings for you to manually change on the camera to get a usable exposure. The flash then provides what it thinks is the appropriate amount of light.
Forum: Pentax SLR Lens Discussion 06-10-2020, 05:45 AM  
Tripod collar for Pentax DA* 300mm
Posted By THoog
Replies: 16
Views: 1,030
I would just attach a quick-release plate, or something like that, to the OEM foot. Cheaper, and easier to find a size/shape to match your hand.
Forum: General Photography 04-21-2020, 06:50 AM  
Huawei caught using DSLR Photos to promote Smartphones
Posted By THoog
Replies: 16
Views: 1,132
This is some Futuristic photography tech. Find a great location, pull out your phone, and download a better picture than you would have taken. Brilliant!
Forum: Pentax Film SLR Discussion 03-19-2020, 05:11 PM  
Pentax ME Super light leak?
Posted By THoog
Replies: 22
Views: 831
I had similar problems with the seals on my ME Super. It turned out to be the hinge, but it was somewhat unpredictable, depending (I think) on how well my right hand was covering the hinge. I replaced the seals and the problem went away. Vendee's suggestion to tape over the door joints as a test is a good one.
Forum: Mini-Challenges, Games, and Photo Stories 03-19-2020, 04:33 PM  
Thematic Silly Coronavirus "Self Isolation" Household images
Posted By THoog
Replies: 550
Views: 20,047
Nobody said lasagna had to be pretty - which is good, because that would be 'WAY beyond my culinary abilities...
Forum: Mini-Challenges, Games, and Photo Stories 03-19-2020, 04:13 PM  
Thematic Silly Coronavirus "Self Isolation" Household images
Posted By THoog
Replies: 550
Views: 20,047
We were getting dangerously low on this critical material; a couple hours in the kitchen solved that problem (for now).
Forum: Photographic Industry and Professionals 03-12-2020, 06:48 PM  
NAB 2020 is cancelled
Posted By THoog
Replies: 30
Views: 1,221
I'm afraid I have to agree - in the first week of cases here, our state health department only found out about them when they were notified by other states (who had patients who had been in contact with ours). In one of those cases, the individual was in northern Italy, had a fever for two days, then came home, apparently without telling anyone. Even if I am generous and say he didn't know northern Italy was a hotspot for Covid-19 when he was there, it would have been pretty hard not to know by the time he got home. But human nature is going to say "I want to get home, therefore I am safe to travel", then "I don't want to be inconvenienced/stigmatized, therefore I didn't have the corona virus and don't need to tell anyone."
Forum: Pentax K-30 & K-50 03-09-2020, 06:16 AM  
K10 focussing screen any use?
Posted By THoog
Replies: 7
Views: 688
I don't think the screen is going to fit in your other cameras. The K10D and K20D used the same L_-80 screens, while the K200D used the same screen as the K100D through K-r "low-end" bodies. The K-30 began the standard of the "low-end" and "high-end" APS-C bodies using the same M_-60 screens (so, K-7/5/3/KP,30/50/500/S1/S2/70).
Forum: Repairs and Warranty Service 03-07-2020, 01:32 PM  
Yongnuo 660 fixable?
Posted By THoog
Replies: 5
Views: 461
YongNuo flashes are such disposable items, the usual approach is to return it and get another one. I don't think I've ever heard of anyone actually getting one repaired. Have you tried triggering it remotely, on a hotshoe, etc? That would tell you if it was just a bad test button. There may be a factory-reset button combination, but I would have to download the manual and decipher the YN-speak, which sounds like actual work. :)
Forum: Pentax Film SLR Discussion 03-05-2020, 01:57 PM  
Pentax MV shutter speed
Posted By THoog
Replies: 14
Views: 654
Well, it seems to be the same meter/speed selector circuit, just wired to three indicator LEDs instead of a bank of them.

The manual for the MV (pages 9-14) seems to indicate a red light for overexposure (greater than 1/1000 sec) and yellow for underexposure (less than 1/30 sec). I seem to recall a thread where someone insisted their MV showed red for low light. I don't remember there being a resolution, so I will just point at the manual and say "that's what it says".

Link to manual:
https://www.cameramanuals.org/pentax_pdf/pentax_mv.pdf

Your stance/breathing technique will also make a big difference in what is acceptable for a given focal length. When I was younger, I frequently shot indoors down in the "ambers" on my ME Super and thought the results were acceptable. My standards may be higher now. :)
Forum: Pentax Film SLR Discussion 03-05-2020, 07:26 AM  
Pentax MV shutter speed
Posted By THoog
Replies: 14
Views: 654
I don't think that focal length comes into play at all. The light meter produces a voltage according to how bright the light is, and a simple circuit (probably something like a ladder of diodes) sets the shutter speed according to that voltage. If the selected speed is 1/60 or higher, the green light is also lit. If less than 1/60, the red light is lit.

The circuit is more or less the same as the ME Super in "Auto" mode; it just doesn't tell you what speed it is selecting.
Forum: Pentax SLR Lens Discussion 03-01-2020, 12:38 PM  
SMCP-DA 21mm f3.2 vs HD DA 21mm F3.2
Posted By THoog
Replies: 17
Views: 1,182
The SMC version produces better "stars" from light sources (think streetlights at night). The HD version is a little more flare-resistant. So, obviously, you should buy one of each. :lol:
Forum: General Photography 02-28-2020, 12:19 PM  
stay off the tracks 2, photographing
Posted By THoog
Replies: 14
Views: 930
I hate to disagree, but of all the zoos, museums, photo ops, and events I have shot in 35+ years, train events were the worst *by far* for photographers stomping in front of the "firing line" to get THEIR shot, or screaming at you from a hundred feet away because you wandered into their shot, or just general unpleasantness. And then there was the guy that was complaining loudly when I arrived because his favorite locomotive wasn't spotted where he wanted, complained as they rotated it to that very spot because it should have been there in the first place, and was STILL complaining about it hours later when I walked by him on the way to my car! It's all the social dysfunction of a comic book convention mixed with a bunch of grumpy old men.

So I guess my tips are; (1) Keep looking over your shoulder for the other guy (or trains!), (2) be patient, and (3) when you get your chance, shoot fast.
Forum: Pentax SLR Lens Discussion 02-18-2020, 04:49 PM  
M42 adapter problems
Posted By THoog
Replies: 15
Views: 691
The screw for the spring is actually one of the biggest problems on the cheap adapters - it should be just about flush, but is frequently sticking out where it can snag on the mount. Besides the spring, the machining on the cheap adapters is frequently not as good as the genuine Pentax. Check for burrs on the ends of the bayonet flanges. You may also want to compare the flanges to a K-mount lens to make sure they have been machined to the correct widths. If you have removed the spring and screw, and there is any sort of scraping sound/feel when installing the adapter, something is sticking out and needs to be removed.
Forum: Pentax Film SLR Discussion 02-13-2020, 12:07 PM  
Spotmatic with weird translucent "lens"
Posted By THoog
Replies: 8
Views: 714
The casting quality (or lack therof) resembles my early attempts to make toys using cheap latex mold compound and the resin meant for clear paperweights (spoiler: they aren't compatible - and the results stink, in more ways than one).
Forum: Flashes, Lighting, and Studio 02-05-2020, 06:29 PM  
I'm always confused about canon/nikon mount Yongnuo
Posted By THoog
Replies: 16
Views: 853
Followup on the 622 - it really was intended as a dedicated transceiver for e-TTL or i-TTL and would not add anything for the 560ii. I wouldn't spend extra for it unless you also use actual Canon or Nikon gear. And, as inkista says, you may want to consider other systems; your 560ii is only going to be a manual flash, so there is nothing tying you to YongNuo at this point.

That said, I have a pair of 560iiis, a 560TX to control them, and a bag of cheap old manual flashes on RF603s for background fill that really does everything I need for off-camera flash. YMMV.
Forum: Flashes, Lighting, and Studio 02-05-2020, 10:28 AM  
I'm always confused about canon/nikon mount Yongnuo
Posted By THoog
Replies: 16
Views: 853
So far as I know, none of the 560 flashes can be controlled by the 622. (I will have to confirm and update.)

You should get the Nikon versions of the 560TX and receiver. I personally have been able up get the RF-603Cii to work on Pentax, but others have had problems.
Forum: Pentax Camera and Field Accessories 02-04-2020, 03:24 PM  
Focus Screen Compatability? Chart? K5 - KP
Posted By THoog
Replies: 4
Views: 511
The K-5 screens (M[]60) fit all of the K-7/5/3 bodies *AND* the KP *AND* the K-30/50/500/S2/S1/70 bodies. They won't fit anything earlier than that or the K-1.

Source: I went to the "accessories" page for every single body and confirmed the part numbers for the screens were the same. I'm not doing it again. :lol:
Forum: Pentax DSLR Discussion 02-03-2020, 07:17 PM  
Why Bulb on modern cameras
Posted By THoog
Replies: 20
Views: 1,179
And fireworks - open the shutter as the shell goes up, close when the burst is at maximum size.
Forum: Pentax K-01 02-03-2020, 06:17 AM  
Firmware Update on K-01
Posted By THoog
Replies: 6
Views: 762
I'm glad you got your K-01 updated.



Pentax cameras format the SD card with the FAT or exFAT file system. There is always a root directory and a directory called 'DCIM'. Image files are stored in additional directories within DCIM. If an SD card doesn't have a root directory after formatting in the camera, then something is very wrong with that SD card.
Forum: Pentax K-01 02-02-2020, 07:45 AM  
Happy Birthday to the K-01!
Posted By THoog
Replies: 130
Views: 21,550
Forum: Pentax SLR Lens Discussion 02-01-2020, 02:20 PM  
One or the other need help on a 55-300 zoom lens??
Posted By THoog
Replies: 32
Views: 1,490
The older 55-300 (not PLM) was regarded to be optically one of the best "consumer" zooms in that range, and the PLM is generally considered to be as good or better, so the decision really comes down to the cost difference and whether you are going to use the lens on an older body that can't support the PLM. My 55-300 hasn't done me the favor of falling 14 floors :lol: or I would have probably replaced it for the faster focusing speed. (The KP has a stronger screwdrive motor than older bodies, which helps the older 55-300 in that regard).
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