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Forum: Lens Clubs 22 Hours Ago  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
Even in raw, banding seems to be a sensor-dependent issue, and one that seems not to be related merely to megapixels. With the 20MP sensor in the K-S1 I can hardly make any adjustments to a cloudy sky at all before I start getting banding and posterisation. But with the 10MP sensor in the GX-10(K10D) I can easily pull a cloudy sky by three stops without problems. I assume (or at least hope) that newer and better CMOS sensors than the one in the K-S1, especially ones with 14 bit raw, won't have the same problem.


Is it possible that even the raw files from some cameras have been put through lossy compression?
Forum: Pentax DSLR Discussion 22 Hours Ago  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
:lol::lol::lol::lol::lol:

The average yacht has more responsive steering.
Forum: Pentax DSLR Discussion 1 Day Ago  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
Great photos of some awesome cars, Ray. I love the almost wet paint look. Did you use a polariser, or is that just the CCD doing its thing?





Yep, I learnt to drive in one back around 1980, although it was nowhere near the class of the one in Ray's photos. Ours was a beaten up old 72 model, and here she is on our driveway on Long Island: Big Bertha herself. (Apologies for the non-K10D photo. Hope I haven't already posted this one before.)
Forum: Lens Clubs 4 Days Ago  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
I completely agree, Ray. It's outrageous that Australia only gets an easily missed wall plaque nearby.

The truth is, Plymouth has missed a massive open goal in what it has done with the Barbican quayside. The old fish market is right next to the spot in my photo, and it's a beautiful Victorian cast iron structure in itself. When it closed down back in the nineties they should have turned it into a museum/visitor centre that could have made Plymouth an attractive destination for both Australian and American visitors to the UK. It probably would have brought the lucrative cruise ship market to the city too. But instead they turned it into slightly tacky glass-blowing place that has nothing at all to do with Plymouth's long and fascinating history.

Next time I'm in Plymouth, I'll leave a little Australian flag at the spot on your behalf.
Forum: Pentax DSLR Discussion 5 Days Ago  
The Six-Megapixel Club
Posted By Dartmoor Dave
Replies: 412
Views: 22,762
Smeaton's Tower on Plymouth Hoe with the DL2 and Takumar 17mm fisheye. I was amazed how close I was able to stand to the tower and still get the whole thing in the frame.

Smeaton's Tower by David Holland, on Flickr

EDIT: I decided to add a colour corrected version, because the original looks like it has a colour cast.

Smeaton's Tower (colour corrected) by David Holland, on Flickr
Forum: Lens Clubs 5 Days Ago  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
I had to be in Plymouth yesterday, but I managed to get time for a walk on the Hoe and Barbican, so that's fine. Here's a shot of Smeaton's Tower on Plymouth Hoe in the winter afternoon light. with the 17mm in full fisheye mode:

Smeaton's Tower by David Holland, on Flickr

EDIT: I decided that the light in the tower shot gives too much of a colour cast, so here's a colour corrected version:

Smeaton's Tower (colour corrected) by David Holland, on Flickr

This next one is more of a snapshot, but I think it has some historical interest. It's the Mayflower Steps on Plymouth's Barbican, which commemorates the place where the Pilgrim Fathers (and Pilgrim Mothers and kids) boarded the Mayflower to sail to the new world. The quayside has been extended by about thirty feet since then, so nobody really knows where the actual spot was, but this is close enough. And there's another country that also has its origins on this quayside: it's the place from where the first convict ship sailed to what eventually became Australia. Lots of weight of history resting on this little place. The photo is also with the 17mm, but this time defished.

The Mayflower Steps by David Holland, on Flickr
Forum: General Talk 6 Days Ago  
What music are you currently listening to?
Posted By Dartmoor Dave
Replies: 3,439
Views: 283,723
My cousin Joanie's band Madonnatron have been getting themselves some great reviews for their first album this year. (Maybe a parental advisory is. . . um, advisable. Although I think we're all grown-ups here.)



















You Tube



Forum: Lens Clubs 12-06-2017, 03:11 AM  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
I can't remember the last time I used my 20mm at anything other than f/11. I know that I used f/4.5 for a shot in heavy fog in late 2016, but for that one I was aiming for softness. I might have used f/8 once or twice in the meantime and forgotten about it, but on the whole I treat it as effectively a fixed f/11. I think it's a lens that has quite different characteristics at different apertures, not just in terms of sharpness but rendering too, and I seem to get the best tonality at f/11.

It's also a lens that seems to hate overexposure and love underexposure. I always shoot at least a stop below what any camera's built-in meter would recommend, and I regularly go two or even three stops under.
Forum: General Talk 12-06-2017, 02:57 AM  
A little rant: Talking Head videos on Youtube
Posted By Dartmoor Dave
Replies: 35
Views: 1,181
More and more often, when I need to look up some minor thing online, almost the entire first page of Google results is clogged up with videos that would take ten minutes to tell me something that I could read in thirty seconds. Meanwhile, I've decided just this week to give up on Facebook because of its insistence on prioritising videos that I'm not interested in over the things that my friends and family are writing on their timelines. The powers-that-be in Silicon Valley seem determined to take us back to an age where reading and writing are the special magic of the chosen few.

This leaves me with an awful vision of a future in which online photography forums have become nothing more than page after page of little talking head videos, with never a written word to be seen. And somewhere in another dimension, Ray Bradbury will be chuckling.
Forum: General Photography 12-04-2017, 12:15 PM  
Lensculture street photography awards
Posted By Dartmoor Dave
Replies: 19
Views: 624
I get the feeling that what we're seeing now is the series as Simsek originally intended it. My guess is that he switched in some other shots that he thought might suit the competition better, but has now reverted. Although that's pure speculation on my part, of course.

I'm glad to see that my favourites from the series are still there. It's the third to the tenth that appeal to me the most, and I can't help thinking that the new photographs at the beginning and end are a bit too obvious in their birth-life-death message. It's still a memorable series though, and the man with the hat and glasses will stay with me for a long time -- it looks like a Magritte reimagined by Francis Bacon.

I have no intention of trying to tell anyone else what they should and shouldn't like, but I'll happily say that the photographs in Hakan Simsek's winning set appeal to me immensely. I liked Dougie Wallace's set even better, admittedly, but then I already loved his work. His "Harrodsburg" project blew my mind when I first saw it, and still does.
Forum: General Photography 12-02-2017, 02:53 AM  
Lensculture street photography awards
Posted By Dartmoor Dave
Replies: 19
Views: 624
I think the newspaper chose to represent the winning series with the photo from the set that I personally find the weakest, and their chosen quotation from the photographer doesn't help. But after clicking through to look at the full set, I think it's a magnificent series of photographs and a worthy winner. There are some of the most memorable photographs in that set that I've seen for a long time.

Some of the others looked like frankly clichés though, of the sort that get to the top of Flickr explore. Asian person looking out of a vehicle window in the rain (Steve McCurry style)? Check. Geometric building shapes with a lone figure walking through a patch of sunlight (LFI Gallery anyone)? Check. Old person scaring up a flock of pigeons (we've ALL done that one)? Check.

The winning series is the one for me, and also Dougie Wallace's wonderful work in his trademark confrontational style.
Forum: Pentax DSLR Discussion 12-01-2017, 01:24 AM  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
Well obviously I love that one!
Forum: Lens Clubs 12-01-2017, 01:18 AM  
20 mm Lens Club.
Posted By Dartmoor Dave
Replies: 566
Views: 60,654
I think it's a great photograph exactly as it is, and it's the crazy angles that make it work so well. A more "correct" composition with everything neat and rectangular would probably look boring in comparison.
Forum: Lens Clubs 12-01-2017, 01:09 AM  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
I think "smooth sharpness" is a good way of putting it. It's something that was very visible when I compared the 35mm/3.5 with the 1st version 35mm/2.0. At first glance the 3.5 looked much sharper because it gave higher contrast edges, but when I looked closer I could see that the 2.0 had more "real" sharpness and more detail. My personal feeling is that I want my photos to look about as sharp as the real world looks and no sharper, and so that "smooth sharpness" effect is exactly what I like in a lens.
Forum: General Photography 11-29-2017, 06:51 AM  
Harmless fun: suggestions for new cameras etc. to be available 1 April 2018.
Posted By Dartmoor Dave
Replies: 53
Views: 1,209
Didn't even have to think about it: the K1000D. An exact digital clone of the K1000, with all the same manual controls in all the same places. . . right down to a shutter that you have to cock by throwing the thumb wind. No autofocus and no LCD screen on the back either: raw only, with the white balance set to daylight and no option to change it. Basically a Pentax equivalent of that special edition digital M that Leica made a couple of years back.
Forum: Lens Clubs 11-29-2017, 06:39 AM  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
I think you've definitely got the Tak 20 look going on with that one, Paul. It's one of those things that I can't define in any objective way. . . but I know it when I see it.





And Ray, you've definitely got the characteristic Tak 24 look with that one. It's amazing how the 20mm and 24mm can have such different characters when they are both Taks and their focal lengths are so close, but they really do. The 20mm is all mystical and dreamy, and the 24mm is all detail and bite. The 24mm is my go-to lens for snaps with family and friends, and the 20mm is my "mysterious Dartmoor" specialist.
Forum: Lens Clubs 11-27-2017, 04:18 AM  
20 mm Lens Club.
Posted By Dartmoor Dave
Replies: 566
Views: 60,654
This morning I've been looking back at some of this year's snaps with the Super Takumar 20mm.

Organic Lawnmower by David Holland, on Flickr

Ponies on Feather Tor B&W by David Holland, on Flickr

You-Know-Where. . . by David Holland, on Flickr

Full Gallop by David Holland, on Flickr
Forum: Pentax DSLR Discussion 11-27-2017, 03:08 AM  
The Six-Megapixel Club
Posted By Dartmoor Dave
Replies: 412
Views: 22,762
Beautiful light in that one, Joey. Definitely worth clicking through to Flickr to appreciate the photo full screen.
Forum: Lens Clubs 11-27-2017, 02:59 AM  
Takumar club
Posted By Dartmoor Dave
Replies: 15,314
Views: 2,655,970
When I saw that 20mm in the marketplace and noticed that you'd sent the seller a pm, I hoped that you were going to end up with the lens. I think it'll suit your style perfectly. I know that the *ist is your main M42 camera, and I know that the 20mm can give great results with the 6MP sensor, but trust me on this one: once you've tried the 20mm on your K10D you will never want to take it off again.





Well I love a good sourdough, but I'm going to have to consider the advisability of sesame seeds for a while before making any firm judgment. I'll have to tentatively raise the question with my local artisan baker down at the market, but it could end up with me being chased out of town by peasants with pitchforks and flaming torches.:lol:
Forum: Pentax DSLR Discussion 11-26-2017, 04:35 AM  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
Oh well, that idea didn't really work out. Turns out that to fill the frame as a supplementary lens it needs to go on something like my SMC Takumar 105mm/2.8, and to get anything beyond about 6 feet in focus I'd have to adjust the Takumar to focus slightly beyond infinity, which I don't want to do. Especially since my guess is that the end result would only be something with about the same field of view as a poor quality 28mm.

So I think I'm going to call time on this particular round of experimentation. Thanks to everyone for the comments and likes. I definitely feel like I've got my money's worth out of the £5 that I paid for the zoom.:D
Forum: Pentax DSLR Discussion 11-25-2017, 04:13 PM  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
Your wish is my command, Ray:lol:. I think I can get rid of the circular effect by reversing a couple of elements and using the bits taken from the old zoom as a screw-on supplementary lens to attach to maybe a 35mm or 55mm. I'm not sure how much of a wide angle effect will be left, but I'm willing to give it a try. I've just bodged the bits together with a de-glassed 49mm UV filter ring, some old M42 extension tubes, and some superglue. But since it's past 11pm on Saturday night here as I type this, and I'm several glasses into a very pleasant bottle of Aussie merlot, it'll have to wait until tomorrow to see if it works.

In the meantime, let's all enjoy Paul's photographs of the Spitfire. That Merlin engine is a thing of beauty in itself.
Forum: Pentax DSLR Discussion 11-24-2017, 11:02 AM  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
Go for it! I bet there's all kinds of fun stuff you could do with the elements out of that lens.

So now for Part 2 of the Miranda 70-210mm lens element rearranging fiasco. I made a bit more progress with getting the middle group of elements reorganised to work as an ultra-wide, although as you can see from these test shots there's still some way to go. I had to crop these, because they were nowhere near to filling the frame, but I actually quite like the circular effect. The scenes are actually much wider angle than they look, because somehow this contraption makes ultra-wide look not that wide at all.

SG109027 by David Holland, on Flickr

SG109032 by David Holland, on Flickr

SG109046 by David Holland, on Flickr
Forum: Pentax DSLR Discussion 11-23-2017, 12:21 PM  
The K10D Club!
Posted By Dartmoor Dave
Replies: 3,347
Views: 308,585
I've had an unloved and unwanted old Miranda 70-210mm zoom lying around the place for a while, and it occurred to me to take it apart to see if I could do anything interesting with any of the bits of glass inside. These are test shots using just one lens element only: the front element of the zoom, reversed and stuck on a focusing helical, with an aperture disc made from a washer. I think the centre is actually sharper than when it was part of the whole zoom, but the edges. . . well, you're never going to get sharp corners from one element all on its own.

I also played around with some of the elements from the zoom's middle group, which suggested the possibility of making a really good little ultra-wide out of them, but I can't get the flange length right to work on a DSLR. What's really needed for this sort of lens hacking is a mirrorless, so I think I might have to look around for a cheap K-01.

Single Lens Element Test by David Holland, on Flickr

Single Lens Element Test by David Holland, on Flickr

Single Lens Element Test by David Holland, on Flickr
Forum: Pentax DSLR Discussion 11-23-2017, 01:19 AM  
The Six-Megapixel Club
Posted By Dartmoor Dave
Replies: 412
Views: 22,762
I completely agree with Mike. Paul, that second shot with the dog is really very special and magical. 99% of modern digital photographers would have gone for maximum depth of field and ended up with something very ordinary, but you didn't. You turned it into something really extraordinary and beautiful just by making a better choice about where to focus. A photo that you can look at again and again and discover more each time.
Forum: Lens Clubs 11-22-2017, 02:50 AM  
Radioactive Lens Club- We proudly glow in the dark.
Posted By Dartmoor Dave
Replies: 61
Views: 9,129
I was surprised to look back at page 3 of this thread and see how much my opinion of the Takumar 50mm/1.4 has changed since then. Back in January 2016 I was saying that it was giving great results after de-yellowing, but in fact as time went on I started to feel that I never should have de-yellowed it at all. The more neutral colour rendering started to bore me, producing results that were sharp but without character, and I found that I was always using the Super Takumar 55mm instead of the 50mm. So in the end the 50mm/1.4 had to go (made a small profit though because the glass was now clear).

I guess the moral of the story is to think very carefully before de-yellowing. What if it's the yellowing itself that made you like the lens in the first place? It certainly turned out to be that way for me.
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