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Forum: General Photography 07-13-2021, 12:57 AM  
Semi serious Question- How to Cure G.A.S
Posted By JensE
Replies: 149
Views: 4,162
It's actually not about limiting yourself. I'm in my 6th single-in-challenge (struggling a bit in the last few days, but catching up). It's actually the commitment to go out and take at least one photo to share every day - which necessarily reduces the time spent on nurturing your GAS. This, combined with the chance to really explore the strengths and weaknesses of the lens of the month, is a lot more satisfying than studying gear theoretically. I sometimes bring an additional lens, but that doesn't impact the commitment. It has also encouraged me to explore my environment for photographic opportunities beyond my usual subjects.


I'm not immune to GAS, have bought a lot of stuff and am aware of what I should probably sell. because it's been superseded or plain unused. But the stuff I'm looking for now is really what I found missing in the process of taking pictures, such as a more practical bag for my bike that would hold K-1 with the 15-30mm mounted, a low-height light stand for ground-level macro work ... Lenses? I have more than I can regularly use that cover nearly every photographic situation with good quality and enough lenses with character to fill the time that I have to play with them. I can't promise to not jump on a modern D-FA should one show up as a bargain. Knowing what I have learned through the SICs, there's no rush and not even @pepperberry was able to convince me to buy that long-sought Nokton which turned up recently :).
Forum: Mini-Challenges, Games, and Photo Stories 07-07-2021, 02:02 PM  
Thematic Single in July 2021
Posted By JensE
Replies: 141
Views: 4,986
Are there? According to The New World Atlas of Artificial Sky Brightness | CIRES, the west coast of the Highlands is really the closest there is. But then you need to be lucky to have a clear view of the sky from the Hebrides.
Forum: Mini-Challenges, Games, and Photo Stories 07-07-2021, 05:59 AM  
Thematic Single in July 2021
Posted By JensE
Replies: 141
Views: 4,986
Thanks, I'll get something in the size of the HN-1 - I found a rangefinder-style one in my bin, which is OK but not as good as a closed one.


Using a filter to block the Sodium D-Line(s) is of course an option - if you have it with you. I have an Astronomic CLS one that goes (yuck!) into the K-1 mirror box for astro shots, but intended to get a threaded one in addition anyway, while they still make sense.
Forum: Mini-Challenges, Games, and Photo Stories 07-04-2021, 11:15 AM  
Thematic Single in July 2021
Posted By JensE
Replies: 141
Views: 4,986
Congrats! Easy to get a sluggish one when you pay ten times as much. Even with a bit of manual help for the AF sometimes, I really enjoyed the SIC in June with it, both on APS-C and FF.
Forum: Mini-Challenges, Games, and Photo Stories 07-04-2021, 01:09 AM  
Thematic Single in July 2021
Posted By JensE
Replies: 141
Views: 4,986
Does anybody have a recommendation for a hood for the A24mm/2.8 for use on a K-1? It looks like contrast could benefit quite a bit. I tried a petal-shaped one, which is mounted on a screw-in adapter. But the adapter vignettes on FF, even though the hood itself is fine and a nice solution for the KP. I can likely find some 58mm collapsible rubber hood to use on a step-up ring, maybe that is wide enough for the K-1, but also somewhat bulky.
Forum: Welcomes and Introductions 07-02-2021, 11:28 AM  
Scientific and Macrophotography
Posted By JensE
Replies: 17
Views: 691
Even for 'natural objects' such as insects, I prefer to use the ring flash as fill only, especially from the underside. My main light is either a speedlight mounted on a bracket, with a diffuser (mini-octobox) close to the lens, or a flash with umbrella on a light stand, because that often allows to also illuminate the background. A ring flash is hard to beat for quick documentary shots, to capture a rare sight like a hard to find species with good confidence in the light setup and good detail in the main subject - when the overall composition and light is secondary.
Forum: Mini-Challenges, Games, and Photo Stories 07-02-2021, 01:33 AM  
Thematic Single in July 2021
Posted By JensE
Replies: 141
Views: 4,986
As you can see from the shot, I'm in with another A24/2.8. And it's been well past midnight again, but i hope I can stay on track this time.


The first short made me aware of quite a bit of distortion. It anybody aware of a FF lens profile that I could use with Rawtherapee or do I need to create one?
Forum: Welcomes and Introductions 07-02-2021, 01:18 AM  
Scientific and Macrophotography
Posted By JensE
Replies: 17
Views: 691
The only dedicated flashes supporting PTTL that I'm aware of are the excellent but expensive and long discontinued Pentax AF160 FC and the Sigma EM-140 Pentax (not sure if there was a Metz in PTTL). But as pointed out above, that may not be needed in your application. From a quality of light perspective, the Pentax seems a lot more even.

Mechanically, in conjunction with the DFA100WR, the AF160 FC is the only off-the-shelf solid solution, attaching to the lens barrel. I adapted that concept to a super inexpensive manual flash from Viltrox, which provides a comparatively good quality of light because it covers a large angle with its two tube sections, much more than the Sigma and the twin-flash like Metz. But it developed a high voltage cable problem ... For older manual lenses with a solid lens tube, there shouldn't be an issue with the screw-in attachments of course and the generic flashes with two sections will all work fine.
Forum: Mini-Challenges, Games, and Photo Stories 07-01-2021, 05:13 PM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
A good point to weigh in here, I guess. Sorry to have flooded the group with my pictures from a whole week at one. An infection had knocked me down for a few days and I needed to catch up with a lot of other stuff first. I used the DA*55mm on the KP for the first half of the month and did not find it difficult to find matching subjects and perspectives, and it worked equally well on the K-1 from a field-of-view perspective. I noticed that the hood contributed a lot of the vignetting on FF. I need to think about a way to resolve that, even though I had no trouble shooting without a hood either.

Overall, I'm fairly happy with the results from DA*55mm, the pictures have a beauty to them. I thought of buying the VL Nokton 58mm instead (you know it's never really instead), but when the AF of the DA* started to not lock on, which was a frequent problem, I remembered how I like to have AF in the first place. Phase detection AF was still working well most of the time, but contrast detection AF fails regularly even on contrasty subjects. I'll try an MF lens in July, joining in with another A24mm f/2.8.
Forum: Pentax News and Rumors 06-22-2021, 05:48 AM  
HD 77mm f/1.8 LTD!
Posted By JensE
Replies: 237
Views: 22,222
I don't think this would be the difficult part - in the end, the flange sits flush metal-on-metal defining the register distance. As far as I remember, none of the existing WR lenses have aperture rings though, which would therefore need an unprecedented new design.
Forum: Mini-Challenges, Games, and Photo Stories 06-18-2021, 02:52 PM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
I can't decide what to post for the last few days even after culling, so I did a little count for a break: It looks like on average, I took 30 exposures per day since I started with SIC in February. That's after initial culling, which I haven't been very effective with recently - my import backup only has 50% more ... With a bit of gymnastics, I could also count the SIC photos explicitly, but the vast majority are taken with the respective SIC lenses.

I have not imported the SIC photos into my darktable catalogs yet - I need to make up my mind on how I want to organize them, because a lot of them also have other relevance. Once imported, I find it difficult to organize stuff differently in darktable without messing up the catalog. So most of my post-processing in the SIC has been done with Rawtherapee, which doesn't maintain a catalog. I find tonal management easier with darktable, but I'm getting best details in Rawtherapee - which you however are only able to see on Flickr when I post deep crops.

So for now, it will continue to be RT and a daily folder, but I'll try to keep up with culling and posting in a more regular fashion. My attempt to just use out of camera JPEGs were OK and sure very quick, but I found it rather limiting.
Forum: Pentax DSLR Discussion 06-16-2021, 12:12 AM  
IR conversions
Posted By JensE
Replies: 50
Views: 2,175
Thanks, I'll get back to you once I am more confident with my judgements - which will require more experience and data points (wavelengths, cameras).
Forum: Pentax SLR Lens Discussion 06-15-2021, 09:46 AM  
Pentax FA 15-30mm or Sigma Art 18-35mm
Posted By JensE
Replies: 14
Views: 529
It's a very different angle of view between those two, because at 18mm, you'd have to crop the Sigma image significantly. So the question is also one of ultra-wide to moderately wide (15mm-30mm), vs. moderately wide to wide-normal (18mm-35mm, partially cropped). Having just used the ultra-wide daily for a month, I wouldn't agree that it's a joy to use it. It is an effort, but it does produce excellent images and was especially surprised by its close focus abilities.
Forum: Mini-Challenges, Games, and Photo Stories 06-15-2021, 09:33 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
Went out late last night to close the flight holes of some the hives out in the orchard, to bring them here in time for linden blossom. Then got up early morning to pick up a van and bring the hives here before it got too warm. Very likely no late night shot today - I still have to process and post lasy night's 1am shot.

To follow through with my plans to switch cameras, I should also clean my K-1 sensor, but maybe a wide open lens will have to do for today.
Forum: Mini-Challenges, Games, and Photo Stories 06-13-2021, 09:28 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
I like the idea, mine has not seen much use lately. Alternatively, the Elicar 90mm Macro, which I bought from him a while ago :)
Forum: Mini-Challenges, Games, and Photo Stories 06-13-2021, 02:46 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
My lens of the month, the DA*55, may need a little adjustment. When AF drives it to infinity, I cannot focus manually - neither by switching to MF (lens and/or camera) not by manual override. Workaround is to first have the AF drive it closer. MF still feels a little stiff ...
But I'll first finish the month. What do you think about switching cameras mid-month? So far, I've only used it on the KP, considering the K-1 for 2nd half. Or should I rather do a separate SIC? Same lens, but it will be different for sure ...
Forum: Pentax DSLR Discussion 06-10-2021, 02:52 AM  
IR conversions
Posted By JensE
Replies: 50
Views: 2,175
I found the Kolari list not necessarily reliable - as noted, the FA 31mm does produce a hotspot when stopped down. Maybe it's more useful to look at the 'poor performers' - I can confirm that the DA*55mm is only usable fairly wide open (720nm filter).




Thanks a lot, your recollection already helps to figure out which ones to try next.
Forum: Pentax DSLR Discussion 06-09-2021, 07:55 AM  
IR conversions
Posted By JensE
Replies: 50
Views: 2,175
Could you share which ones you tested? I have noticed a mild hotspot on the FA31mm with a 720mm filter on an unconverted K-1 and haven't tried others yet.
Forum: Mini-Challenges, Games, and Photo Stories 06-05-2021, 02:35 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
And here I am, wondering wether to skip after just three successive months. I did notice that I have less time or energy for other photographic ideas or projects. But altogether, I do get out more often, read up on a lot of things that I would otherwise never think about and have created some images that I'm happy with, mainly because their subject is very different from my usual ones. I cannot see myself doing that for years though.

So congrats to that long interesting journey with the SICs, I hope you'll enjoy whatever you will do instead.
Forum: Mini-Challenges, Games, and Photo Stories 06-01-2021, 01:17 AM  
Game Single in May 2021
Posted By JensE
Replies: 343
Views: 12,830
Maybe get one of the converters for another SIC:hmm:? I really enjoyed your images this month, which often had a nice spontaneous feel to hem.
Forum: Mini-Challenges, Games, and Photo Stories 05-31-2021, 04:21 PM  
Game Single in May 2021
Posted By JensE
Replies: 343
Views: 12,830
Your pictures almost make me want to buy that lens, even though my plan was to not invest further into APSC-only lenses. I guess I should try the FoV with my Color Scopar 20mm on the KP for a while.

I definitely realized this month how much I liked the KP with DA40 in April for a SIC. In contrast the K-1 + 15-30mm is heavy and bulky, it doesn't fit into any of my shoulder bags mounted and thus wasn't such a pleasure to use on 'ordinary' days, when I just like to throw the bag in my pannier when running errands. I most enjoyed the combo when I had dedicated time to go out just for the sole purpose of taking pictures. It does (just) fit my Mindshift Gear Rotation backpack, and paired with the 55-300PLM it actually made a decent hiking combo. I replaced the bigger tripod with just the Xiah Little Elephant for that day - a good decision, covered all my tripod needs. My biggest challenge was surprisingly focus: There is no usable distance scale beyond 1m and the hyperfocal distance is sometimes fairly far out if you want fine details to be preserved. Once I loosened up, accepted that despite all the bulk and heft it's just a lens with a nice range and good close focus, it became a really useful lens without major weaknesses, some of my favorites include, for different reasons:






Forum: Mini-Challenges, Games, and Photo Stories 05-31-2021, 01:47 AM  
Game Single in May 2021
Posted By JensE
Replies: 343
Views: 12,830
Same here, about 500 exposures on the weekend, lots of failed macro shots, but only ~20 for the SIC combined, so hope to be able catch up with posting and commenting today. Still no chance the test out the filters on the FA 15-30mm and today will be hockey practice (2nd time this year), so I'll be lucky if I get any shots in today.
Forum: Mini-Challenges, Games, and Photo Stories 05-27-2021, 08:51 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
The FA28 is available used occasionally here, as is the F28. The classic higher element count F28 is preferred by some over the lower element count, but aspherical, FA28 - likely a question of priorities. The F28 is a solid and sharp performer with generally pleasant rendering, astro-shots show its limitations though (high coma wide open).
Forum: Mini-Challenges, Games, and Photo Stories 05-27-2021, 08:44 AM  
Game Single in June 2021
Posted By JensE
Replies: 188
Views: 7,022
Same formula, but the lenses in the DA35/2.4 are a little smaller in diameter. Still has nice pop, the focus ring is a lot smoother and more usable than the FA's. It's said to even be a little brighter than the nominal 2.4, but it does not cover the full 35mm format wide open. Mechanically, the front element feels equally exposed as the FA one, which however comes with a nice bayonet hood that attaches to the barrel whereas on the DA you have to screw one into the filter thread - nothing I'd want to put into my bag without taking it off. I've seen a lot of rather inexpensive used FA's after the HD FA release lately.
Forum: Mini-Challenges, Games, and Photo Stories 05-26-2021, 02:52 PM  
Game Single in May 2021
Posted By JensE
Replies: 343
Views: 12,830
Neither can I. I have not even once mounted my filter holder on the 15-30mm yet ... (Yes, it did return along the 4th dimension.)
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