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Forum: Pentax Price Watch 07-05-2019, 05:05 PM  
PK-A Adaptall Mount
Posted By Derek
Replies: 0
Views: 316
A store in Canada that I occasionally enjoy dealing with has five of these listed on their website today @ $89.99 CAD apiece.

Victoria Camera Traders in Victoria, BC; I have no affiliation other than being a satisfied customer. They take consignments and
might be open to offers. YMMV
Forum: Troubleshooting and Beginner Help 06-04-2019, 07:34 PM  
Pentax LX Winder Battery Tray Issue
Posted By Derek
Replies: 7
Views: 342
Maybe just some black electrical tape on the other end to hold the slide in, perhaps with an elastic band around the whole unit.
It wouldn't be pretty but it might keep it closed for you.
If it doesn't work you won't have spent much.
Forum: Film Processing, Scanning, and Darkroom 04-17-2019, 09:05 AM  
Ilford Fp4plus 'spotting' on negatives
Posted By Derek
Replies: 55
Views: 2,084
I wonder if you're suffering from a bit of reticulation which can be caused by an abrupt temperature change.
Are you chilling your dev to 20C but running everything everything else at 25C? You could try running your dev at 24C for about 7 minutes instead.It might help.
Perhaps try googling "film reticulation" and also tropical developers which are formulated to deal with the softer emulsions that can result from higher process temperature.
Forum: Flashes, Lighting, and Studio 04-11-2019, 07:42 PM  
Pentax spot meter question
Posted By Derek
Replies: 7
Views: 515
Mine has an Exell A 640, made in China.
Forum: Pentax Camera and Field Accessories 04-07-2019, 09:13 AM  
Cheap kit to get started with Macro photography
Posted By Derek
Replies: 37
Views: 1,623
photolady I stand corrected!
The proper term that I was trying to recall is a "49mm Macro Coupler" ($7.95 at B&H).
Forum: Pentax Camera and Field Accessories 04-06-2019, 09:37 PM  
Cheap kit to get started with Macro photography
Posted By Derek
Replies: 37
Views: 1,623
When I think "reverse lens adapter" I picture something with a K-mount on one end and a reversing male thread on the other. I could well be wrong in my terminology but a lens coupler to me me is similar but not quite the same.
Oh heck, get 'em both! Neither one is terribly pricey.
Forum: Pentax Camera and Field Accessories 04-06-2019, 09:20 PM  
Cheap kit to get started with Macro photography
Posted By Derek
Replies: 37
Views: 1,623
You could pick up an older aperture-ring equipped lens in the 28mm to 50mm range which will probably have a filter size of around 49mm. These are very good lenses to have at least one of, and they can be purchased used quite cheaply. Then send away for a simple little item called a lens coupler.
Put your 77mm on the camera and add the lens coupling ring, then reverse mount your shorter lens onto the end of the 77. Voila, lots of magnification for not much money. The shorter your short lens is in comparison to the 77 the more magnification you'll have. The short lens is now a high quality close-up filter. You also now have a nice short fast prime that you can also use with a set of extension tubes or close-up filters sometime in the future.
Forum: Pentax Film SLR Discussion 03-21-2019, 08:55 AM  
What film for astrophotography?
Posted By Derek
Replies: 10
Views: 570
Perhaps I should elaborate. I assumed that you were wanting to shoot in color in order to capture the deep reds of HA.

Ektachrome was often used in the past but I haven't sought out the spectral sensitivity ratings of the new emulsion (or the old ones
for that matter.) 100 or 200 ASA were preferred.

Interestingly, Ektar 100 shows a noticeable spike near 656.3 nanometers but I don't know if the reciprocity failure characteristics are suitable
for your needs. Usually a slide film works better in such conditions of extreme underexposure. Portra 800 shows something similar though
not as pronounced.

---------- Post added 03-21-2019 at 09:06 AM ----------

One more thing. Pentax Forums has blessed us with an astrophotography group.

Have you tried posting in there?

BTW, one reason why digital has taken over the astrophotography pastime is that it is just a lot easier.
Forum: Pentax Film SLR Discussion 03-20-2019, 07:24 PM  
What film for astrophotography?
Posted By Derek
Replies: 10
Views: 570
Probably Ektachrome.
Forum: General Talk 03-17-2019, 06:43 AM  
What music are you currently listening to?
Posted By Derek
Replies: 4,609
Views: 390,244
Handel, Dvorak ...
Forum: Film Processing, Scanning, and Darkroom 03-16-2019, 06:06 PM  
[Printing] Setting up a color darkroom?
Posted By Derek
Replies: 14
Views: 770
Well, what Dennis said plus a set of Kodak Viewing Filters (quite cheap) to judge what color adjustments need to be made. Many of the items you'd be buying would also work for black and white. Color isn't any more difficult than BW, just different. RA-4 also a lot less finicky than C-41 re temperature requirements.
Darkroom equipment has been at giveaway prices for a long time. Shop around, ask lots of questions, have fun. Color paper is usually cheaper than BW due to lower silver content. (former APUG) is a great place for asking advice about darkroom work.
Oh yeah, buy an enlarger that is at least one format size larger than what you plan on shooting. Having your own darkroom capability becomes very addicting.

Forum: Pentax SLR Lens Discussion 03-15-2019, 04:52 AM  
77m Filters, they ok?
Posted By Derek
Replies: 22
Views: 874
Some of my lenses are 49mm and some of them are 95mm (and other points in between). Mountjng a 95mm filter on a 49mm lenses make it look like

you have a teacup saucer on the front of your camera. A little weird but perfectly functional and no worries about vignetting on a wide angle lens.
Forum: Ask B&H Photo! 03-10-2019, 08:47 AM  
Film Prices?
Posted By Derek
Replies: 2
Views: 2,449
What is going on with the price of TMax 400 in 35mm bulk rolls? Over the last while both B&H and Adorama prices per roll have been randomly jumping back and forth between $80 and $130, apparently in sync with each other. I haven't seen other retailers going through these pricing contortions, nor have I noticed big changes in other Kodak products.
Inquiring minds want to know.
(Love your your mail order system, by the way)

Forum: Visitors' Center 03-04-2019, 11:00 AM  
Recommended Lens for K3-II Astrophotography Produced Anything But Stars
Posted By Derek
Replies: 9
Views: 634
In daylight with Live View and LV magnification focus on something as far away as you can see.

Tape the focus ring at that point using "gaffer's tape" on some other type that doesn't leave a lot of residue.
Use just enough tape that you won't jostle it of position in the dark.

I do this with any lens that I want to use for stars, etc.
Forum: Film Processing, Scanning, and Darkroom 03-03-2019, 05:08 PM  
Shooting tri-x at ISO 200
Posted By Derek
Replies: 10
Views: 630
Just give it your normal time in the developer. The negatives will have a wee bit more density, but they should print fine.
Your enlarger exposure times will be a bit longer to get the same dmax on the print, but it's a good way to ensure that you're
getting good shadow detail.
Forum: Pentax SLR Lens Discussion 03-01-2019, 08:25 PM  
Lied to about condition of lens on Ebay help!
Posted By Derek
Replies: 37
Views: 2,169
It's possible that someone used canned air when cleaning the lens and tilted the spray can, spraying out some propellant. It can be cleaned off but if it wasn't noted there in the description then you have a valid reason for a return.
I've had nothing but excellent dealings with high feedback sellers from Japan. It seems something went wrong here. Perhaps an employee messed up?
I suggest mentioning it to the seller first, but if you want to go for a refund do it through ebay, and only through ebay. They are set up for it, it helps with any language difficulties, and it carries more clout with the seller. Once you start it do everything ebay's way. Good luck!
Forum: Pentax Film SLR Discussion 02-13-2019, 04:51 AM  
Underexposed, underdeveloped, or incorrectly scanned?
Posted By Derek
Replies: 28
Views: 1,393
Your midtones are great, but between the white collar and the shadowed hair that's quite a large dynamic range to fit on a negative.
A one to two stop "pull" might have helped but that could be difficult if you aren't doing the processing. A reflector to the left would help
for next time.
Nice bracken shot!
Forum: Post Your Photos! 01-19-2019, 02:26 PM  
Cityscape Pskov city in winter
Posted By Derek
Replies: 4
Views: 444
The muted colors in these are really nice. It's almost as if someone (very talented)

had done some hand-coloring on black and white prints. I like that effect!

Forum: Pentax SLR Lens Discussion 01-19-2019, 10:34 AM  
Macro Lenses Suggestions
Posted By Derek
Replies: 73
Views: 3,305
I was asking about the 300.
Forum: Pentax SLR Lens Discussion 01-19-2019, 03:31 AM  
Macro Lenses Suggestions
Posted By Derek
Replies: 73
Views: 3,305

You've got my curiosity up. Is that "old tamron sp" a 54B?

The one shown on the SP website looks like it might be useful.

Forum: Post Your Photos! 01-16-2019, 09:40 PM  
Night Andromeda Galaxy with New Scope and the K-1
Posted By Derek
Replies: 25
Views: 1,326
Well done! Amazing results.
This is a project of mine for this summer.
Forum: Pentax SLR Lens Discussion 01-10-2019, 09:59 PM  
Samyang/Rokinon 85mm f/1.4 problems and resolving them
Posted By Derek
Replies: 9
Views: 836
I sent my first 85/1.4 back to B&H because the aperture linkage was sticking in the applied/closed position.
In my case just actuating the lever 3 or 4 times would make it malfunction.
The second one they sent me was fine.
I must try that focus calibration.
Forum: Pentax SLR Lens Discussion 01-04-2019, 11:38 PM  
Macro Rings or Tubes?
Posted By Derek
Replies: 15
Views: 901
Hi Bruce.
You've spent a lot of money on high quality lenses. You don't want to mess that up by putting low grade close up filters in front.
I'd say you should spend a bit more and get a Canon 250D close up lens in 58mm diameter and get a couple of step up rings so you can use it on all your FA's. The 250D is about $90 USD at B&H and it's about as good as you'll find for that application. Nikon also made a nice one. They're both hi res and no light loss.
Extension tubes are my other favorite way of gaining magnification but your exposures will get longer (or you'll need a flash).
Hope this helps.
Forum: Pentax Film SLR Discussion 01-03-2019, 05:33 PM  
:cool: Lets see those ''film'' shots
Posted By Derek
Replies: 19,267
Views: 2,360,146
Hi Russell.
Very nice results, and definitely worth a try. However, I'm confused. You mentioned Rodinal.
Is that a typo or are you somehow using that for a developer.? Tetenal?
Forum: Pentax Camera and Field Accessories 12-13-2018, 05:17 AM  
Any experience with Pentax replacement focusing screens?
Posted By Derek
Replies: 3
Views: 739
These screens are mostly useful for a telescope /microscope application or some other where you're not getting much light in your viewfinder. That's when center split rings and other such devices tend to block up and become a bit redundant. If you never use the split ring then you might like a strictly matte screen, but they can be a problem under more normal conditions.
Hope this helps.
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