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Forum: Troubleshooting and Beginner Help 10-23-2020, 03:04 PM  
Sigma APO 150-500mm DG OS HSM focusing issue?
Posted By OldPentaxFan
Replies: 13
Views: 731
I've had this lens for a bit over a year now and it doesn't have a clicking sound and smoothly focuses, not in steps, so I'd consider returning it since it doesn't seem to be normal.

My major observation is that the focus speed is slower than I expected compared to my Sigma 70-200, but it is a bigger and heavier lens so I attribute the speed difference to the size and weight of the optics.

Good luck.
Forum: Post Your Photos! 07-30-2020, 02:49 PM  
Travel India, part one: Into Rajasthan
Posted By OldPentaxFan
Replies: 3
Views: 278
Nice series, I look forward to seeing more of your trip!
Forum: Winners' Showcase 04-01-2020, 06:51 PM  
March, 2020 Winner: Rainy Evening in the City
Posted By OldPentaxFan
Replies: 102
Views: 1,117
I would like to nominate this photo
Forum: Monthly Photo Contests 04-01-2020, 09:08 AM  
Secret folower
Posted By OldPentaxFan
Replies: 60
Views: 965
I would like to nominate this photo
Forum: Monthly Photo Contests 04-01-2020, 09:08 AM  
Afterglow
Posted By OldPentaxFan
Replies: 46
Views: 688
I would like to nominate this photo
Forum: Monthly Photo Contests 04-01-2020, 09:07 AM  
bridge storm
Posted By OldPentaxFan
Replies: 20
Views: 344
I would like to nominate this photo
Forum: Winners' Showcase 04-01-2020, 09:07 AM  
March, 2020 Runner-up: Water on the Table
Posted By OldPentaxFan
Replies: 100
Views: 1,889
I would like to nominate this photo
Forum: Pentax K-3 03-31-2020, 05:06 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
Just be certain you drink it with good friends and family of the appropriate age.

(Sitting 2 meters away from each other, of course)
Forum: Video and Pentax HDSLRs 03-29-2020, 06:54 AM  
Recommended audio editing software for videos
Posted By OldPentaxFan
Replies: 25
Views: 1,581
I've been working with Audacity on and off for about 6 months now. It's a free program for both PC and Mac. ( Audacity ® | Free, open source, cross-platform audio software for multi-track recording and editing. )

Working with audio files is entirely new to me so I can't say if there is anything easier to use out there but it seems pretty straight forward and I like the results so far. I'd say it was similar to learning Lightroom in that it has a lot of features and the more you use it the more you get out of it.

Once the editing is complete I have used an older version of Adobe Premier (non-cloud) to paste the audio back into the file.
Forum: Film Processing, Scanning, and Darkroom 01-28-2020, 11:48 AM  
Dark Room Project suggestions needed please
Posted By OldPentaxFan
Replies: 12
Views: 732
If you're working with aquariums you may already be familiar with ultraviolet systems for bacteria/fungus control. No chemical additions to interfere with developer chemistry.

Initial washing after the fixer can be done in the darkroom and then moved into the house for longer durations to minimize just how much water you need to have stored in your new darkroom. It may be less convenient but in the winter times will minimize problems associated with freezing hoses and storage barrels. Local water supply quality will determine if you need to use RO water (DI water is better but not really needed from a chemistry perspective with what you'll be doing). I'd also put a water filter between your storage tank(s) and the faucet you use to keep the potential crude from making it to the development tanks/trays. It's always better to use cleaner water for making up the chemicals but you will have to balance the benefit with the effort to make and store it, sitting in an open barrel could lead to recontamination issues in some instances.

There is never too much dust control, filters for intake/makeup air that comes into the space when you have the ventilation on and a room air cleaner running as well. You can build a drying cabinet with a very low wattage heater and fan pulling air in (from someplace other than the floor (dust control) but ducting it into the cabinet from the bottom so it discharges from the top with LOTS of dust filters on the inlet (think HEPA style with thick dust collection media). The heater could just be a 100 or 200 watt incandescent light bulb, you don't want a huge temperature rise, just enough to promote faster drying.

Temperature control for chemicals and wash water is necessary for consistency in development/fixing times. Also, if there is too large a swing in temperature you can cause problems with emulsion expansion and contraction causing problems. Consistency is probably the most critical over the course of a development session, you can compensate for temperature using temperature/time tables and your own tests. Remember, high temperatures or large swings in temperature between development and washes can actually cause the emulsion to detach from the film/print base, so think about using lower temperatures, which are easier to maintain when you don't have hot/cold water for mixing.

Layout wise, the bigger the wet area the better, small development trays for prints will fit in large spaces while large development trays will NOT fit in small spaces. And think bigger whenever possible. You may start with 8x10 prints now but you'll probably go larger in time just because. I know I did and I had to redo the wet area to accommodate the 11x17 trays. Which in turn meant moving everything around. You could also design your wet area with a water bath in mind to maintain constant temperature. Easy for film development but not as easy for print trays, but it does permit heating and/or cooling of chemicals before and during the development cycle.

You'll want the table the enlarger sits on to be solid and stable. If it's wobbly it can translate the movement to the enlarger head and cause a print that isn't as sharp as you think it should be. For all of your work area think bigger if at all possible, it will save headaches. Given that your shed is only 8x8 lots and lots of storage cabinets under counters and on the walls will help give you more work area. Wall drying areas for film reals or print trays are a good idea as well, keeps the work area neater. For dry developer and such, make one of the cabinets sealed and put a closet dryer (calcium/magnesium carbonate) pack into it to keep the humidity down when the AC is not running. Helps preserve the chemicals and prevents clumping. Liquid chemicals can be a bit corrosive over long periods so minimize how much metal you have in the cabinets you store them in, especially hinges that will start rusting very quickly. It sounds like you already have lab experience so just apply what you know from there.

Since you're going to be using extension cord power go for LED area lighting and for bulbs in your safelights, easiest way to minimize power requirements and not excessively expensive. Focus on setting up task lighting in areas where you will be doing most of your "bright" light work.


I'll probably think of a dozen other things right after I post this but I think it hits the highlights.

Good Luck and have fun!
Forum: Monthly Photo Contests 01-12-2020, 12:24 PM  
Watkins Glenn
Posted By OldPentaxFan
Replies: 18
Views: 273
I would like to nominate this photo
Forum: Monthly Photo Contests 01-12-2020, 12:22 PM  
Baños de Doña María de Padilla.
Posted By OldPentaxFan
Replies: 40
Views: 700
I would like to nominate this photo
Forum: Monthly Photo Contests 01-12-2020, 12:22 PM  
Lofoten sunrise
Posted By OldPentaxFan
Replies: 27
Views: 309
I would like to nominate this photo
Forum: Monthly Photo Contests 01-12-2020, 12:21 PM  
lake Tipsoo
Posted By OldPentaxFan
Replies: 29
Views: 459
I would like to nominate this photo
Forum: Monthly Photo Contests 01-12-2020, 12:21 PM  
The morning of my life!
Posted By OldPentaxFan
Replies: 43
Views: 759
I would like to nominate this photo
Forum: Winners' Showcase 01-12-2020, 12:20 PM  
December, 2019 Third Place: Mt. Fuji
Posted By OldPentaxFan
Replies: 35
Views: 755
I would like to nominate this photo
Forum: Post Your Photos! 12-28-2019, 03:25 PM  
Abstract Colorful Scarves
Posted By OldPentaxFan
Replies: 10
Views: 361
Thank you!
Forum: Pentax K-3 11-06-2019, 09:10 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
I know these bacon delicacies are a bit on the upscale side, but heck, everyone needs twenty more ways to cook with bacon!

20 Ways You Never Thought To Use Bacon
Forum: Pentax K-3 11-03-2019, 09:31 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
A tip for Otis...…

There are Blonde Squirrels all over the place here.
Forum: Pentax K-3 11-03-2019, 08:36 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
Tipping Otis......is that like tipping cows?
Forum: Pentax K-3 10-24-2019, 07:01 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
So long as you take your spurs (or stilleto heels) off before getting into bed there shouldn't be a problem with punctures.
Forum: Pentax K-3 10-21-2019, 08:38 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
Of course you do!

And even if you're running a few minutes late they'll wait until you get there and settle in before leaving.
Forum: General Talk 10-21-2019, 08:33 AM  
what is the longest non stop flight you have ever taken - here is a new one
Posted By OldPentaxFan
Replies: 47
Views: 1,782
Non stop New York to Bangkok, 17 hours and a few minutes (after that long who counts minutes).


we flew east the outbound and return flights, so on that trip we circumnavigated this little oval ball we call home.

With intermediate stops the total travel time was about 27 hours each way (the return may have been a few hours longer with the layover in New York. I try to forget unpleasant experiences when possible.)
Forum: Pentax K-3 10-20-2019, 07:29 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
Congratulations you two!
Forum: Pentax K-3 10-18-2019, 01:48 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By OldPentaxFan
Replies: 82,409
Views: 3,270,355
You let goats graze in some interesting places.
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