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Forum: Post Your Photos! 03-09-2019, 04:55 PM  
Landscape Clouds over Black Canyon
Posted By fromunderthebridge
Replies: 12
Views: 380


B&W rendition of a shot taken at the Black Canyon of the Gunnison some years back. I did wait some time for the clouds to roll in to paint the canyon walls with striped shadows and provide more feeling of depth for the scene.

I only had one afternoon to visit the park and this, with the experience itself, was what I came away with. I'd like to revisit sometime, but I'm uncertain if I ever will. Living in Europe, visiting the national parks in the U.S. is a rare treat indeed.

It took me years to figure out how to develop this according to my tastes (and finding about silverefex to boot).
Forum: Post Your Photos! 03-07-2019, 10:16 PM  
Nature B&W Sunflower
Posted By DW58
Replies: 8
Views: 255
Have recently been tweaking some older shots in order to add more interest.
Forum: Post Your Photos! 03-05-2019, 07:48 PM  
Black & White picnic table in winter
Posted By Tbone51
Replies: 8
Views: 220
too frigid to bag a lunch
Forum: Pentax K-30 & K-50 02-21-2017, 01:01 PM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By madphys
Replies: 255
Views: 42,496
I hope this will be of help to those who are afraid to slightly take apart the camera, are not able to get their cameras serviced or the repair is too expensive. There are related bits of information scattered around the forums but I will try to put everything here - step by step - an easy to follow approach.

This can be applied to other cameras than K50/500 but the placement of screws can be a little bit different. In general it is the same for all models - you just have to be observant when looking for the screws.

So my approach uses an old but fully functional K100D (If you have an old camera gathering dust you can try a similar approach). I didn't want to ruin the K100 as it was in mint condition but after a long thought I figured out that I won't affect its functionality in any way. So the earlier models such as isD, K100D, K10D, K200D etc have a better quality solenoid part (it doesn't seem to fail in such large numbers) in them + they have 2 solenoids in them - other controls the flash compartment. Yes...this means less work to get the part.

Essential Tools required: Patience, 100g Vodka (HUMAN SR), Small but long screw-driver that fits the screw-heads - I suppose it is a JIS-type but you could get away with phillips, small soldering iron with rather pointy tip (low power - for electronics), tweezers (will help with the tiny screws and soldering).

PART I (Extraction from the donor_K100D).

To extract the solenoid we need to remove just the top cover

1) Press the open-flash button and don't close it. Take out the battery prior following operations.
2) If you didn't open the flash, then: Opening the flash...as it is electronic, we need to push the lock manually - for that we need something thin but rather stiff...something out of plastic works just fine. The lock is positioned on the side of the grip - so slide in the sheet of plastic inside the gap and wiggle - flash pops open.
3) Unscrewing screws -there are 8 screws to unscrew before it is possible to take off the top cover. 2 screws are hiding behind the rubber of the viewfinder (refer to Figure 1 of K500 as it is very similar) - pull the rubber part upwards to remove, next, 2 screws are in the flash compartment - that is why we opened it (Figure 2, green circles), 2 screws are each near the strap loops (Figure 2, purple circles - on K100 position is a bit different but you will find them), 1 screw is at the side of the flash compartment (Fig.3,b, purple circle)+ there is one final screw hiding in the battery compartment (Fig.4, green circle).

Figure 1


Figure 2


Figure 3


Figure 4


4) Now we can carefully take off the top cover. And what wee see - it is Fig 5.

Figure 5


5) The solenoid is held in place by one single screw - so we need to unscrew it...take notice - the contacts at the solenoid end are fixed with polymer - so it is hard to unsolder them - this is why I chose to unsolder at the board end and take out the solenoid with wires.

Figure 6


6) As can be seen in Fig 6, it is an easy task to unsolder the wires. Get your soldering iron up to the temperature and just touch the pads - if needed use tweezers and pull of the pink and purple wire. DO NOT heat the pad for prolonged time - if you didn't succeed, let it cool and try again a bit later. You don't want to overheat these pads.

Extraction completed!

Part II (getting to the green friend)

In theory you wouldn't need to remove the top cover of K50/K500 but as it is easier to change out the solenoid with wires - we will have to remove the top cover as well. Plus with loosened screws of the top cover it is easier to get off (and back in) the front cover.

1) Let's remove the bottom cover. Figure 4 - shows already removed bottom cover - take notice that some screws go inside metal and some inside plastic - so obviously threads on them are different - what I want to say - there are so many different screws in this camera - don't mess up. It is very advisable that you somehow take exact notice from which place you unscrewed a particular screw - make a sketch of the camera body if it helps or maybe you have a phenomenal memory.

So - Fig.4 purple circles are outer screws which are obvious. Blue circles show 2 screws which are underneath the battery compartment cover (so obviously you will need to open it). So Purple + Blue screws = bottom cover can be removed. Nice

2) Now the bottom cover has been removed but our goal is to remove the front cover - so underneath the bottom cover there is one more screw (green circle), which has to be unscrewed...and while we are here - undo the one inside the battery compartment (because we will need to remove the top cover as well)

4) The top cover goes the same as in the case of K100D - please refer to pictures. If you decide not to remove the top cover (somehow you have acquired fresh part and you want to solder the wires at the solenoid and not at the board), then still you need to undo screws inside flash compartment and one above RAW button (Fig.3). I would also advise to undo the top cover screw at the strap loop (Fig.2 - purple circle one the left) - it will hugely help to get the front cover back in more easily.

5) Final screws for the front cover...They are hiding beneath the rubber. (Fig 3 - green circles) - so on the right side there is one obvious screw and one underneath the rubber, but on the left side of the camera (right side of the image) - both are hidden from view. You need something sharp - I used my sharp tweezers to slightly rip of the corners (market with arrows) - the rubber sits on some sort of double sided tape, so it won't be too hard.

6) Now the screws have been undone (I really hope I didn't forget any) and it is time to remove the front cover. It sits tight. I suggest to start with the grip side - don't force it too much. But a slight force should be applied to get it off. The keyword is patience. Just to be safe - be careful with the flash capacitor (Fig.3 b shows its approximate position). If you have multimeter you can check the voltage across its terminals - If HOT..then discharge with ~10 KOhm resistor or just wait with the voltmeter attached.

7) Bingo...now we see our green friend (Figure 7). Again - you need to undo just one screw...I didn't drill any holes in the battery compartment and you don't need it either - a slight angle - when you use a long screw driver doesn't hurt. When you remove the solenoid be careful not to change position of the gear.

Figure 7


8) Unsoldering part - top cover has to be removed, because it is where the soldering pads are (Figure 8). Again be very careful - don't overheat - just touch with soldering iron and simultaneously remove the wires. BTW this is the part where HUMAN SR becomes handy. If something doesn't goes right - don't force it - let it cool and try again later.

Figure 8


9) Now let's look at both solenoids side by side (Figure 9)

Figure 9


As you can see - the dimensions are the same - color of wires is the same - so it is 1:1 replacement - both in K50/500 and K100D purple goes back to purple, pink goes back to pink.

10) So it is obvious that we put the better part from the K100D inside K50/500 where it will function as it should. When I checked the green friend I found that the magnetic attraction was really strong...the white friend could be taken appart considerably easier. So as I didn't want to limit functionality of my K100D, I decided to put the green friend back for opening the flash - as it is not such a crucial place (basically I have never used the built in flash). But before I did it - I used the "filing-trimming" method on the horse-shoe ends. You don't need to file a lot - just a bit (Fig. 10 shows my approach). After filing the force that hold it in place became considerably weaker...so I thought - good enough - and put it back in K100D, where it indeed works like intended.

Figure 10


So to put everything back you need to work in reverse order. Word of caution - when putting back the front cover - pay attention to the AF-switch...The equilibrium position is C.AF - move the switch on the cover in C.AF position and move the actual switch on the body also in its middle position - it will help to get the front cover on with the first time and not to take it off when you discover that something is wrong with the AF switch.

I hope this can help someone who is ready to try this operation. There is just no need to let a good camera loose some of its functionality.

UPDATE:

I did a bit of digging about solenoid part and I came up with some links for you. Still it is not that easy to buy just one single solenoid for a regular person, but - here is the info:
1) Part made in South Korea
2) Alibaba offering what I guess is the same as above
3) Summit electronics - this I think is already known
4) Maotech with some extended specifications

So I suppose these can be ordered just in large quantities. My guess is that for a regular person who doesn't have an old K100D or doesn't want to apply the "filing mod" (as it might not be a permanent fix, as reported by some people) the best thing is to hunt for a cheap (used) DVD or CD drive from laptop. I did a quick search and managed to find something as cheap as $5 on ebay. But - unfortunately these drives can utilize different solenoids so it is a lottery to some extent.
Forum: Monthly Photo Contests 01-03-2019, 11:43 AM  
Mountain Lake in the Afternoon
Posted By jchorst
Replies: 10
Views: 201
Here's my entry. Cheers, Christoph
Forum: Winners' Showcase 01-04-2019, 02:44 PM  
January, 2019 Winner: Snowy Dunes and the Henry Mountains
Posted By SteveinSLC
Replies: 49
Views: 728
Was driving out to Horseshoe Canyon in Canyonlands NP the morning of Dec 20, 2018 when we saw this beautiful landscape of snow and orange-red dunes, with the snowcapped Henry Mountains in the far distance.
Forum: Winners' Showcase 01-03-2019, 10:59 AM  
January, 2019 Runner-op: Canola Fields
Posted By bezuidar
Replies: 38
Views: 786
Canola fields between Stanford & Riviersonderend, Western Cape, South Africa
Forum: Monthly Photo Contests 01-20-2019, 09:03 AM  
January submission
Posted By bigoak
Replies: 7
Views: 146
Lower MH across the upper Bay with the Brooklyn docks in foreground.
Forum: Post Your Photos! 01-30-2019, 08:35 AM  
Landscape Castel Boccal, Tuscany, in B&W
Posted By The Madshutter
Replies: 9
Views: 458
The imposing Castel Boccale, a castle hanging on a rocky outcrop overlooking the Mediterranean on the shores of Tuscany, in Italy. A 75 second long exposure taken with Leica SL, Voigtlander 15mm Super Wide-Heliar and my trusted Formatt-Hitech Firecrest Ultra filters during a Workshop One-on-One in led in Tuscany. I can't wait to be back there in April! :)



Thank you for viewing, best regards

Vieri
Forum: Post Your Photos! 01-28-2019, 09:48 PM  
Black & White House-on-Barn?
Posted By jcphoto
Replies: 8
Views: 400
Does anyone know why this "Barn" is built/added on so strangely?
Forum: Post Your Photos! 01-30-2019, 10:48 AM  
Black & White Scanning old negatives
Posted By szs
Replies: 3
Views: 301
Hello Pentaxonians,

I built a simple film-negative scanning setup from materials I bought in a hardware store (one of the big chains) for maybe 20 US$. It is a little flimsy, but it is only the first prototype. I hope to enhance it over time or build a new one with what I have learned.

Background is, I have a million film-negatives and some positives from three decades or so which I don't want to just let rot in the closet. So I decided to scan one or another, probably only the keepers.

The photo I posted is the first result. It is a picture of my children more than 10 years ago in the south of Mexico. My daughter loved washing clothes by hand in the hostel and my son loved watching her which gave me the chance to walk around and make a few photos.

The original was taken on a Canon AE-1, probably with a 50mm, which was my favourite lens. Film was Ilford FP4 plus. I don't remember aperture and shutter speed, but probably f/8 or f/5.6 and 1/60 or so, nothing fancy.

The scan was done with my K-3 II. The light source is a DIY light table using an LED ceiling light with a colour temperature of supposedly 6000K and bright enough to use ISO 100, f/8 and a short shutter speed.

I used a macro extension tube to be able to focus at 8cm. The result is a bit soft at the edges and corners. But for the application, I find it good enough. After all, I do resolve the grain in the original files....

I am happy to give more details on the setup if somebody is interested.

Cheers, Steffen
Forum: Post Your Photos! 02-01-2019, 03:34 PM  
Landscape Long exposure of a windy coast
Posted By Fries
Replies: 10
Views: 370
Haven't had much time to go out for some landscape photography but this is one that slipped trough.;)

Cheers,

Remco

Forum: Monthly Photo Contests 11-28-2018, 11:53 AM  
Wake up call
Posted By gump
Replies: 4
Views: 188
Another day 1/125 f11 1600 iso 190mm
Forum: Post Your Photos! 11-14-2018, 10:14 PM  
Architecture This Old Bridge
Posted By Outlander
Replies: 5
Views: 319
taking 3 years to Build Completing in 1890 at a cost of $530,000 with a span of 1,700 ft, and now must be 5 yrs since a train crossed .
Forum: Post Your Photos! 11-25-2018, 12:58 AM  
Black & White the pod
Posted By françois
Replies: 2
Views: 192
an undecided calendula...
Forum: Monthly Photo Contests 10-07-2018, 04:05 AM  
Two suns
Posted By fastcure
Replies: 28
Views: 289
Sun reflection in the downtown of Bilbao (Spain)
Forum: Post Your Photos! 10-21-2018, 06:31 AM  
People More Street Tats.
Posted By Kerrowdown
Replies: 16
Views: 891
Another posed "Street" shot, might well be the makings of a personal portfolio project, I saw part of the Inca symbol on her back... :)

Stopped this lady (from Belgium) on the street and asked her if I could photograph her. As you see a lot of cool artwork was tucked away hidden under the clothes. :cool:
Forum: Post Your Photos! 10-24-2018, 02:00 PM  
Landscape First try with my new wide angle
Posted By Fries
Replies: 5
Views: 464
Finally pulled the trigger and bought the Irix 15mm Blackstone. Having a weather sealed prime for my K-1 was something I could not resist. I haven't bought any of the (big) zooms for that camera and experimenting with a really wide angle lens appealed to me. Here are some results from the first and second time I used it. I think it is a keeper!

Cheers,

Remco

1. Reflections from the bottom of the sea.


2. Dry.


3. The bovine collective.


4. Skypool.
Forum: Post Your Photos! 01-24-2018, 04:23 AM  
Landscape Storm at sunset at Playa Barrika, Basque Country
Posted By The Madshutter
Replies: 17
Views: 833
Storm at sunset at amazing Playa Barrika in the Basque Country, taken during the Workshop I led las September in Asturias and the Atlantic Coast of Spain. Leica SL, Leica Vario-Elmarit-SL 24-90mm and Formatt-Hitech Firecrest filters.

Thank you for viewing, best regards

Vieri
Forum: Post Your Photos! 10-18-2018, 03:08 PM  
People Characters One Meets Along The Way
Posted By Kerrowdown
Replies: 10
Views: 311
This Gentleman is a portrait artist and a very good one too. :)
Forum: Post Your Photos! 10-08-2018, 06:44 PM  
Black & White Snow
Posted By reh321
Replies: 9
Views: 433
In 1978 I was staying with my parents while job hunting when a blizzard passed through town - actually it took almost two whole days to come-and-go, but it dropped 48" of snow in the process. As the storm tailed off, my mother sent me to a local store to get some milk {after calling around she discovered this small store was open because the lady running it had stayed too long}. Even during the storm, the city had plow trucks running to keep the main roads sort of open. As usual, I took a camera with me, and this is one of the photos I took then.
Forum: Post Your Photos! 09-27-2018, 12:42 AM  
Black & White Summer Skies IV
Posted By Nightwatch
Replies: 3
Views: 243
Hot, moist air from the Gulf of Mexico boils upwards. The small dots are distant birds soaring on the thermals.

Forum: Post Your Photos! 10-10-2018, 07:39 AM  
Landscape Mountains Deserts and Drone Racing!
Posted By Colorado CJ
Replies: 8
Views: 376
Hello everyone!

Besides being a photographer, one of my other hobbies is FPV (Drone) Racing. I am a staff member to a MultiGP chapter called "The Other Guys", a tier 1 racing chapter. We hold races every other weekend and have between 30-50 pilots in attendance with every race, making us one of the larges MultiGP chapters in the United States.

Last month, we held an annual "Drones in the Desert" race in Grand Junction. This event is extremely fun, held at a local modelers airfield and we get the chance to hang out and fly with our friends on the Western Slope.

Every time I am out in Grand Junction I camp at least one night at the Colorado National Monument. It sits atop a large mesa with neat rock formations, lots of hiking, climbing and photo opportunities. I arrived around 4 p.m. so that have me a little time for some hiking and picture taking.

I brought two cameras along on this trip, my Pentax 645D and my Fuji X-T1 (for IR photography and race photography).

Here's a few photos I took the first evening.

Colorado National Monument 2 IR 8-31-18 by Andrew Marjama, on Flickr

Colorado National Monument IR 8-31-18 by Andrew Marjama, on Flickr

Colorado National Monument 2 by Andrew Marjama, on Flickr

Colorado National Monument 3 by Andrew Marjama, on Flickr

Colorado National Monument IR 2 8-31-18 by Andrew Marjama, on Flickr



Waking up the next morning, I took a single photo, packed up camp and it was off to the races!

Morning on the Mesa - Rework by Andrew Marjama, on Flickr


Next up, photos from the two day race event.

---------- Post added 10-10-18 at 08:52 AM ----------

Arriving at the airfield, we set up the track, met friends and started practicing. This race was a Regional Qualifier, so the track is an exact track that each region has to fly in order to qualify for regional finals. The top 100 pilots in each region gets to compete in the Regional Final to see who wins a spot at Nationals. Our Regional Final is being held this weekend in Dallas, Texas. I qualified for a place at Finals, but I own my own company, so it's hard to take time off.

1 by Andrew Marjama, on Flickr

12 by Andrew Marjama, on Flickr

19 by Andrew Marjama, on Flickr

10 by Andrew Marjama, on Flickr

20 by Andrew Marjama, on Flickr

11 by Andrew Marjama, on Flickr

32 by Andrew Marjama, on Flickr

23 by Andrew Marjama, on Flickr

3 by Andrew Marjama, on Flickr

13 by Andrew Marjama, on Flickr

4 by Andrew Marjama, on Flickr

35 by Andrew Marjama, on Flickr

17 by Andrew Marjama, on Flickr

26 by Andrew Marjama, on Flickr

18 by Andrew Marjama, on Flickr



Towards the end of the event a huge Haboob blew in, the dust was extremely thick, covering everyone and everything with a layer of fine silt. It was an epic end to a weekend of racing.

rob by Andrew Marjama, on Flickr

---------- Post added 10-10-18 at 09:20 AM ----------

The next morning I broke camp and decided to take the long way back to Loveland. I wanted to do some more hiking and photography, so I decided to head over to Maroon Bells.

Weather didn't really cooperate, but I got some ok shots anyway. I hiked around 8 miles, took some photos and talked to a lot of people (the area was PACKED, I'll be glad for winter to arrive so the areas I like to hike will be less crowded.

I took a G690BL along with my other cameras for the hike. I have a huge problem with only hiking with a single camera. It seems I always hike with 50 lbs. of camera gear every time I go out.

At the first location, I took a photo with all three cameras. It's interesting to see the different rendering.

First shot is with the G690BL and Portra 160

Maroon Bells Portra 160 by Andrew Marjama, on Flickr

Next a shot with the Fuji X-T1 and a 720nm IR Filter

The Bells IR 1 by Andrew Marjama, on Flickr

And finally, with the Pentax 645D

Maroon Bells - Rework by Andrew Marjama, on Flickr


Maroon Bells 6 by Andrew Marjama, on Flickr

Maroon Bells 4 by Andrew Marjama, on Flickr

Maroon Bells 5 by Andrew Marjama, on Flickr

The Bells IR 2 by Andrew Marjama, on Flickr

Maroon Bells 2 by Andrew Marjama, on Flickr

Maroon Bells 3 by Andrew Marjama, on Flickr

The Bells IR 3 by Andrew Marjama, on Flickr


Leaving the Bells, I drove up over Independence Pass. It is a tight, narrow windy road, some places on the western side are single lane with a 1000 foot dropoff. That is fun when there are two vehicles traveling in opposite directions!

A couple of photos at the top of Independence Pass

Independence Pass 1 by Andrew Marjama, on Flickr

Indepence Pass IR by Andrew Marjama, on Flickr


And here is one last photo, looking back towards Twin Lakes while driving down to Buena Vista

Twin Lakes by Andrew Marjama, on Flickr



Overall it was an extremely fun weekend of racing, hiking, camping and photography. I LOVE Colorado, not just for the scenery, but because in a single day, you can be in the in the desert, High Plains, Canyons and Alpine vistas. It is extremely nice to have a whim on what type of climate you want to be in and head there in just an hour or a few.
Forum: Post Your Photos! 09-28-2018, 01:26 AM  
Landscape Seacombe Bay at sunset
Posted By The Madshutter
Replies: 10
Views: 433
One of Dorset's most spectacular bays is Seacombe Bay, here portrayed at sunset. It takes a very pleasant 30 min downhill walk to get there, and the place is so amazing that it makes the walk back, all uphill, a breeze! Leica S (Typ 007), Leica Summarit-S 35mm and Formatt-Hitech Firecrest filters.

Thank you for viewing, best regards

Vieri
Forum: Post Your Photos! 09-06-2018, 12:26 PM  
People Oops, touched the shutter button to soon...
Posted By Fries
Replies: 17
Views: 807
I normally don't share photo's that are a write of. But this one...:) This is wat happened. To end a big restoration program two public officials were releasing two ducks into the air. My camera was in the wrong drive mode and I had to film this at the same time with another camera on a tripod when I had to shout to stop the proceedings because another photographer moved into my shot. In short, it was messy! In between filming I quickly made a JPG out of the raw file and then made some fast edits after I transferred it to my phone and send it to the newsroom. When I arrived my colleagues where smiling...a lot! I did too after seeing it on a bigger screen. I won't describe what it made them funny to them...

Cheers,

Remco

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