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Forum: Mini-Challenges, Games, and Photo Stories 10-10-2020, 05:34 AM  
Thematic Sunsets
Posted By nicolpa47
Replies: 2,488
Views: 163,239
Poldhu Cove sunset - on The Lizard Peninsula, Cornwall

Forum: Mini-Challenges, Games, and Photo Stories 10-10-2020, 05:31 AM  
Thematic Wetness...If the Subject is Water
Posted By nicolpa47
Replies: 1,843
Views: 131,873
Turbulent water off Church Cove, Gunwalloe on The Lizard Peninsula, Cornwall

Forum: Mini-Challenges, Games, and Photo Stories 10-10-2020, 05:28 AM  
Thematic Flickr Explored
Posted By nicolpa47
Replies: 1,318
Views: 99,328
Recently Explored :- "The Crowns" engine houses at Botallack, Cornwall

Forum: Pentax SLR Lens Discussion 10-09-2020, 09:11 AM  
Recommended Filter
Posted By nicolpa47
Replies: 31
Views: 1,164
I understand both sides of the filter/no filter argument. All I can say is that I prefer removing the amount of salt spray I sometimes find on my filters from those filters rather than from the front element of my lenses. The answer to the question depends in my view upon the conditions in which you take your images.
Forum: Mini-Challenges, Games, and Photo Stories 10-05-2020, 02:25 PM  
Show those old photos from before 1990
Posted By nicolpa47
Replies: 1,168
Views: 116,321
No lighthouse on this headland, although there is a coastwatch lookout, on the seaward side. Apparently the chimney atop the hill related to a mine on the site and even when a replacement chimney was built lower down, the original was retained as a landmark to aid navigation. In 1987, the H. J. Heinz Company bought and donated the site to the nation. It is currently managed by the National Trust.

Most lighhouses now are unmanned and automatic, I think. I don't know that there is any specific purpose for the sheltered terraces, but I presume the greenhouse performs the normal function of protecting plants - as much as anything I would guess from wind driven salt spray at such an exposed location.
Forum: Mini-Challenges, Games, and Photo Stories 10-05-2020, 08:53 AM  
Show those old photos from before 1990
Posted By nicolpa47
Replies: 1,168
Views: 116,321
Cape Cornwall in 1976 - scanned from a Kodachrome slide and taken on a Pentax SPII camera




Cape Cornwall in 2020

Forum: Pentax K-30 & K-50 10-03-2020, 02:13 PM  
Pentax K-50 photos
Posted By nicolpa47
Replies: 1,301
Views: 188,268
Mousehole Harbour, Cornwall - K50 and Tamron SP AF 10-24mm F3.5-4.5 Di II LD Aspherical [IF]

Forum: Mini-Challenges, Games, and Photo Stories 09-30-2020, 11:06 PM  
Thematic Sunsets
Posted By nicolpa47
Replies: 2,488
Views: 163,239
Thank you. No, it's actually an old Cornish mine engine house. It was also used as such in the making of the tv series "Poldark", with some additions as set dressing.
Forum: Mini-Challenges, Games, and Photo Stories 09-30-2020, 02:32 PM  
Thematic Sunsets
Posted By nicolpa47
Replies: 2,488
Views: 163,239
"Wheal Owles at Sunset" - at Botallack on the Tin Coast of Cornwall

Forum: Repairs and Warranty Service 09-30-2020, 10:42 AM  
solder for solenoid repair
Posted By nicolpa47
Replies: 14
Views: 788
Thanks for that useful info. As I will be using a 12v iron and have a 12v model railway controller to reduce that voltage, I'll probably use the 145 solder and reduce the tip temperature. The wires/contacts will already be effectively "tinned".
Forum: Repairs and Warranty Service 09-30-2020, 06:32 AM  
solder for solenoid repair
Posted By nicolpa47
Replies: 14
Views: 788
I have built a number of model railway kits. There are basically two types of metal kit. The first is cast whitemetal and these are best assembled using 70 degree melting point solder. The second is etched metal kits - brass, nickel-silver, etc. These are often assembled using high melting point solders for the main structure, and then lower melting point solders at around 243/188/145 degrees to attach further parts without "unsoldering" the larger parts. Sometimes cast whitemetal parts may need to be attached to brass/nickel-silver components which need "tinning" with a high/medium melting point solder to which the cast parts are attached using low melt 70 degree solder. 70 degree solder is not really intended for electrical work as it is quite soft and can be bulky, so I wouldn't attempt to use it in a camera.

I did test the MZ50 solenoid for polarity, and it seems to be correct. I have bought(not yet received) a non-working Kx on Ebay, so hope to get 2 solenoids off that, one for the K50, and one in case my K30 succumbs to the aperture solenoid failure.
Forum: Repairs and Warranty Service 09-29-2020, 11:56 PM  
solder for solenoid repair
Posted By nicolpa47
Replies: 14
Views: 788
My K50 has started to show the first signs of the aperture solenoid fault and I am preparing to do a self repair. This thread has been useful in that it has confirmed a few thoughts I've had. I have followed this subject on previous threads and it seems to me that preparation, care, and soldering capability are the important factors.

I have experience of soldering, sometimes with small and heat sensitive components. My interest in model railways means I have 12v soldering irons with alternative bits and controllers to alter the bit temperature. I also have available low melting point solders and thought to use the 145 degree version.

I am waiting to receive a non-working camera purchase from which to harvest at least one solenoid. Some time ago I did strip a solenoid from an MZ50 but I think Photogem prefers to use solenoids from later dslr cameras which I hope to obtain. It is clear that space to solder will be limited, but I could practice on the non- working camera.

I won't be rushing to do the repair as the K50 is only a back up, but I would like to keep it working.

Thanks to all, but particularly Photogem, for the guidance on how to repair this fault.
Forum: Pentax K-30 & K-50 09-26-2020, 11:52 AM  
Pentax K-50 photos
Posted By nicolpa47
Replies: 1,301
Views: 188,268
Autumn 2016 at Rufford Old Hall, Rufford, West Lancashire K50 + smc PENTAX-DA 18-135mm F3.5-5.6 ED AL [IF] DC WR

Forum: Pentax K-3 09-20-2020, 03:40 PM  
K3 sample shots ... post here !
Posted By nicolpa47
Replies: 11,286
Views: 1,404,410
Thank you - I spend too much time "wave watching".
Forum: Mini-Challenges, Games, and Photo Stories 09-20-2020, 01:47 PM  
Thematic Sunsets
Posted By nicolpa47
Replies: 2,488
Views: 163,239
Sunset - at Porthmeor Beach, St. Ives, Cornwall

Forum: Pentax K-3 09-20-2020, 01:43 PM  
K3 sample shots ... post here !
Posted By nicolpa47
Replies: 11,286
Views: 1,404,410
"Waves meet rocks" - at Porthmeor Beach, St. Ives, Cornwall

Forum: Mini-Challenges, Games, and Photo Stories 09-20-2020, 01:38 PM  
Thematic Wetness...If the Subject is Water
Posted By nicolpa47
Replies: 1,843
Views: 131,873
"Stormy sea and wheeling gulls" at Porthmeor Beach, St. Ives, Cornwall

Forum: Mini-Challenges, Games, and Photo Stories 09-17-2020, 02:22 PM  
Thematic Model Photography
Posted By nicolpa47
Replies: 136
Views: 7,350
A couple more from the late 1970s



Forum: Pentax DSLR Discussion 09-17-2020, 11:20 AM  
The Six-Megapixel Club
Posted By nicolpa47
Replies: 1,795
Views: 154,307
Definitely not a secret - It was the kit lens bought with the camera - smc PENTAX-DA 50-200mm F4-5.6 ED. It was my first real holiday after buying my first DSLR, so it was very much a learning experience.
Forum: Pentax DSLR Discussion 09-16-2020, 02:40 PM  
The Six-Megapixel Club
Posted By nicolpa47
Replies: 1,795
Views: 154,307
Dollar Cove, Gunwalloe, on The Lizard Peninsula, Cornwall

Forum: Pentax DSLR Discussion 09-13-2020, 11:30 AM  
The Six-Megapixel Club
Posted By nicolpa47
Replies: 1,795
Views: 154,307
Thank you - it's a real "chocolate box" cottage.
Forum: Mini-Challenges, Games, and Photo Stories 09-13-2020, 11:27 AM  
Thematic Flickr Explored
Posted By nicolpa47
Replies: 1,318
Views: 99,328
"Grass and Greenery" at Hesketh Park, Southport


Forum: Pentax DSLR Discussion 09-13-2020, 09:36 AM  
The Six-Megapixel Club
Posted By nicolpa47
Replies: 1,795
Views: 154,307
Cottage at Cadgwith, Cornwall


Forum: Mini-Challenges, Games, and Photo Stories 09-07-2020, 11:59 AM  
Thematic Sunsets
Posted By nicolpa47
Replies: 2,488
Views: 163,239
"Shades of Red" - Sunset on Porthmeor Beach, St. Ives, Cornwall

Forum: Mini-Challenges, Games, and Photo Stories 09-05-2020, 02:13 PM  
Thematic Post Your Cloudscapes
Posted By nicolpa47
Replies: 3,954
Views: 213,049
"I think it might rain" - at Porthmeor Beach, St. Ives, Cornwall




Sun behind the clouds - at Porthmeor Beach, St. Ives, Cornwall




Big sky over Portmeor Beach, St. Ives, Cornwall

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