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Forum: Pentax News and Rumors 1 Day Ago  
DxO score for Pentax 645Z: 101!
Posted By kwb
Replies: 123
Views: 9,188
I was amused enough to actually read dxomark Pentax 645Z sensor review as well as Hasselblad X1D-50c sensor review. I didn't know about this until now, unfortunately I know now, it's all your fault

Anyhow, 645Z review is much more nitpickier, the difference in the way words are chosen is striking. I don't bother to list everything but here's one example.

Look at color depth comments in 645Z sensor review, where Hassy (26.2 bits), 645Z (26.0 bits) and D850 (26.4 bits) are compared:
OK. But in Hasselblad X1D-50c sensor review, where Sony AR7 II (26.0 bits), the camera with exactly the same color depth score with 645Z, fights instead of 645Z, they say this:
Exact same set of scores, but in one report, D850 is the one to go and X1D-50c is slightly above 645Z, that's important enough for them that they needed to highlight the difference using one whole paragraph, in another report the same difference is indiscernible in the real world and they needed to highlight that these are all basically the same.

Sad, I was thinking about switching to dxo from adobe lightroom.
Forum: Pentax Q 2 Days Ago  
Show us some bokeh - BoQeh? - from your Q!
Posted By kwb
Replies: 26
Views: 1,126
Q7 and Wollensak Cine Raptar 25.4mm f/2.8 lens and a 10mm spacer, 3.5 inches (~90mm) or so from the flower, I cannot remember the aperture but at least f/5.6, maybe stopped down more.

Tiny flowers (it's springtime!) by k kwb, on Flickr
Forum: Pentax Compact Cameras 2 Days Ago  
Point and Shoot Competition #118 - Shadows
Posted By kwb
Replies: 22
Views: 978
OK, though the number of photos entered was probably smaller than previous contests (it should have been a tough theme!), that didn't make my job as a judge easy, as there are many pictures I wanted to promote and I can only choose three...

Without further ado, here are the winners!

#3, On the pier in Nieuwpoort, a frosty day by Bart, for parallel curves formed by light, shadows, frost and of course the rails eventually converging into a point. Great job highlighting both the light and shadows!


#2, (no title) by barondla, for using an interesting shadow repetition as a great compositional element. The man adds some kind of suspense, being pushed away to the left due to shadow pressure or something, I feel as if the picture is about to tell me some story though I cannot tell what that is. Making it B/W was also a great idea!


And finally, (drum roll....)

#1, Morning Shadows by John,
for the contrast between organic-shaped shadows and geometric lines of the building, and also that gorgeous blackness of the darkest part of the building entrance. Great job on PP too!


Thank you all for your entries and comments, congraturations to winners, and good luck John for the next round of competition! See you all there!
Forum: Pentax Q 3 Days Ago  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Thanks Phenix jc, I love jumping spiders, too! Using Q7, when they're walking it's almost impossible, so my routine is to chase and wait untill they stop. It's a good manual focus practice.
You may not have many of these spiders but you certainly have the sky of great dramatic color!

---------- Post added 11-20-17 at 01:03 AM ----------


Terrific!
Forum: Pentax Compact Cameras 3 Days Ago  
Point and Shoot Competition #118 - Shadows
Posted By kwb
Replies: 22
Views: 978
All, I didn't want to leave this thread alone till the end, but I totally underestimated how busy this month was going to be for my job as well as at home! I'm not yet back to normal but it's sort of slowing down.

Anyway, I didn't come to the forum for a month or so and I'm delighted to find what I'm seeing here! Thank you all for great entries, you're making my job as a judge difficult. I'll make up my mind by tomorrow night, but in the mean time, I'd like to comment on your entries.

John, great contrast of the organic tree shadows over geometric patterns of the building. I also like the tone of the picture. I don't know what you did with PP, but whatever you did, you didn't overdo, it looks pleasing and very tasteful to my eyes.


chemtech, cool shadow pattern on takin's body. From your picture it looked like some kind of lean cattle but I didn't have any idea for sure, googled it, and wikipedia says it's goat-antelope! There are still many things to learn in this world.


Barbara, I also like the idea of shadow-selfie but I haven't made anything that I really like myself yet. I like the eerie atmosphere of your #3!


Bart, I like the composition of #2. In addition, it makes me visualize the slow motion of the sun probably setting to the left of the frame because of the way the frost is left to the left of the shadows.


Dogs know that shadows are cool! Handsome dog!



Titia, nice colors, lighting and shadows, indeed no light no shadows!


David, I don't know what this is (concrete wall? wooden deck?) but this certainly is a great abstract piece!


Todd, I really respect your ability to see these scenes this way. I might have passed without noticing the shadow/light interplay like these, I'll try to pay more attention in the future.


balondla, great composition, and if I squint, the shadows look like a jaw of a huge monster that is about to attack the unsuspecting man!:)

Thank you again everybody, I'll come back tomorrow night to announce the winner!
Forum: Pentax Q 10-23-2017, 12:53 AM  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Abbazz, thank you for these tests!

Phenix jc, false and nice ;)

John, great urban landscape.

08 wide zoom at 3.8mm.

After sunset by k kwb, on Flickr

SMC PENTAX-M MACRO 1:4 50mm with genuine Pentax Q-K adapter.

I'm gonna press this key for you. by k kwb, on Flickr

02 Standard Zoom at 5.1mm, f/4, ISO 100, ND filter ON, 0.4 sec.

Men in red by k kwb, on Flickr
Forum: Pentax Compact Cameras 10-23-2017, 12:28 AM  
Point and Shoot Competition #118 - Shadows
Posted By kwb
Replies: 22
Views: 978
To me it looks like a cool alternative world! Interesting contrast of vertical shadow of the legs VS diagonal edges/beams/rails.
Thank you David for a great start!
Forum: Pentax Compact Cameras 10-21-2017, 08:11 AM  
Point and Shoot Competition #117 - Geometry
Posted By kwb
Replies: 44
Views: 1,800
All, sorry it took for a while, but here it is.
Point and Shoot Competition #118 - Shadows - PentaxForums.com

I hope many will participate, see you in that thread!
Forum: Pentax Compact Cameras 10-21-2017, 08:05 AM  
Point and Shoot Competition #118 - Shadows
Posted By kwb
Replies: 22
Views: 978
It took me for a while to choose the theme, but here it is, this time it's "Shadows".
Show me what you can do with shadows. Sharp one or soft one. Subtle gradation of darkness or solid black patch of underexposure. Straight, curved, organic, really anything.
Show off your creative use of shadows (and let me steal your idea :p).
Let your creativity dictate, not the spec of the camera!

Rules:
1. Always have fun!

2. Cameras:

No cameras with sensors larger than 1" (some exceptions below).
No large format or camera typically requiring a tripod to use.
No interchangeable lens cameras (some exceptions below).
No 35mm (D)SLRs or any camera weighing over 1kg.

Cameras permitted (cameras listed as acceptable here supersede rules above):
Mobile phones, old and new, iPods, tablets, toy cameras.
Fixed-lens 35mm and smaller-format film and digital cameras (Fuji X100 and GR OK).
Interchangeable or fixed-lens 110film SLRs and Pentax Q.

ANY CAMERA BRAND ALLOWED.

3. Entries will close November 20, 2017 00:00:00 GMT.

4. Maximum image dimensions are 1024x768 (ish) pixels.

5. List camera brand and model with entry for all to see, and exposure data would be nice.

6. No restrictions on when the entries were taken.

7. Contest winner determines the rules, selects theme, sets closing date and judges the next competition.

8. Enter up to three images, however you may change your entries as many times as you like up to the contest closing date/time.
Forum: Pentax Compact Cameras 10-18-2017, 08:51 PM  
Point and Shoot Competition #117 - Geometry
Posted By kwb
Replies: 44
Views: 1,800
Wow, thank you all for wonderful entries, and congratulations Jacquot and paulh! I thoroughly enjoyed your pictures, and learned so much. I'm ready to borrow your composition ideas haha!

Thank you very much savoche for this great theme and for picking my picture. Among so many worthy contenders, I feel extremely honored. And this is a personal thing, but you made an announcement on the same day many scientists around the world (including me) made a big announcement (see e.g. the link below), and I think that my picture is kind-of-sort-of fitting. You made me doubly happy, thank you!
Gravitational waves just showed us something even cooler than black holes | Popular Science

I'll think about the new theme and post it soon, stay tuned!
Forum: Pentax Q 09-29-2017, 08:19 PM  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Oh, thank you er1kksen for kind words!! But the truth is that it's Lightroom programmers who got it right as far as the stitching goes, not me.
I didn't think that my Q7 can do in-camera panorama but I could be wrong.

As for the focal length it could be all over the place as it's mostly dictated by how tall I'd like the image to be (i.e. the vertical angle of view), but it seems like I have more pano shots with 5mm than 15mm. I just take multiple shots paying attention to the grid line on screen (I often try to keep the horizon aligned with the bottom 1/3 line) as well as electronic levels. I think I try to keep at least 60% overlap between shots (maybe more). Then I feed them to Lightroom, select "merge" or some such and then "panorama" and voila! Then PP.

Hope this helps!
Forum: Pentax Q 09-28-2017, 07:46 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
Another thing I forgot to mention is that SiklyPix doesn't auto-stretch to 4000x3000 even when it auto-crops. It just takes a smaller area.
Far better than Adobe products' behavior to auto-crop and auto-stretch at the same time IMHO.
Forum: Pentax Q 09-27-2017, 10:51 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
I checked today and SilkyPix auto-crops when loading DNG, but you can revert it back.
Click "trim" button (scissors icon at the top), then press "Enable all data including invalid area in RAW data" button at the bottom right of "Setting for trimming" window.
Forum: Pentax Q 09-25-2017, 08:31 PM  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Another 02 lens shot, this is a four-shot stitch.


Morning by k kwb, on Flickr
Forum: Pentax Q 09-23-2017, 09:15 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
Thank you.:)
Forum: Pentax Q 09-23-2017, 09:12 PM  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Phenix jc, I like the color of your pictures.



I agree with both of you. It's not a sharp-wide-open-corner-to-corner kind of lens, but it's still a good useful lens which produces nice results.


Sunset on the roof by k kwb, on Flickr

Another good thing about the 02 is that you can get closer than 01, 06 or 08.

Ready for launching by k kwb, on Flickr
Forum: Pentax Compact Cameras 09-23-2017, 04:50 PM  
Point and Shoot Competition #117 - Geometry
Posted By kwb
Replies: 44
Views: 1,800
Hi all, another great theme and great entries!

Stanford Memorial Church, CA, USA. Pentax Q7, 08 wide zoom at 5.9mm, f/5, 1/25 sec, ISO 200.

Numbers by k kwb, on Flickr

New Haven Union Station, CT, USA. Cellphone picture (HTC 10).

Corridor by k kwb, on Flickr

The fall guard around the ladder looks like some black hole geometry cartoon. Pentax Q7, 02 standard zoom at 5mm, f/4, 30 sec, ISO 1600.

Falling into the Milky Way (a shooting star crossed Cygnus) by k kwb, on Flickr
Forum: Pentax Q 09-23-2017, 12:17 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
Hmm, I was quite sure that the DNG file contains all pixels without cropping from my experience with RawTherapee some time ago, but nowadays I use Lightroom, I looked at one of my files and sure enough, it seems to be auto-cropped. But using RawTherapee it's not.

Attached are screen shots of embedded jpeg, Lightroom and RawTherapee in this order.

What's going on here seems to be that the DNG contains full pixels as well as cropping information, and Adobe products honor that to autocrop and stretch, but RawTherapee doesn't. I don't know how to bypass auto cropping in Lightroom, so if I want to get the full pixels maybe I also need to cover the contacts.
Forum: Pentax Q 09-22-2017, 11:48 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
Yes, interesting perspective indeed!
If you're post processing anyway, why shoot in jpeg? I guess that's why you need to cover contacts, to prevent Q7 to automatically crop a little when producing jpeg?
Forum: Pentax Q 09-21-2017, 11:41 PM  
The MaQro Qlub!
Posted By kwb
Replies: 106
Views: 21,400
Good sharpness and color, good job!

03 is the most closeup-friendly of the native Q lenses I own (03>02>08>06=01 in terms of maximum physical magnification).
Forum: Pentax Q 09-19-2017, 05:36 PM  
Tamron c-mount lens 75mm f3.9 on Pentax-Q7
Posted By kwb
Replies: 19
Views: 1,052
This is very good, nice color and details!
Forum: Pentax Compact Cameras 09-18-2017, 09:35 AM  
Point and Shoot Competition #116 - Summer evening
Posted By kwb
Replies: 45
Views: 2,417
Congrats Titia, Abbazz and Savoche!

And thank you very much Alayos92 for wonderful theme! This should have been a tough one to judge.
Forum: Pentax Q 09-16-2017, 02:09 PM  
Let's share shots with Q!
Posted By kwb
Replies: 5,683
Views: 772,864
Two macro shots with Q7, SMC PENTAX MACRO 1:4 50mm and PENTAX K-Q adapter. I already wrote this in the adapted lens thread, but I'm happy with the color this lens gives.
And I have to say that I'm really happy with the genuine K-Q adapter, too. For a long time I only used third party adapters, but the genuine one is much higher quality, black paint is really black (no need to paint anything), mechanical connection is solid, and of course 1/1000 to 30 seconds shutter speed. Even with flash.

The first one is a small weed flower in the sunset.
Roadside aster(?) in the evening by k kwb, on Flickr

Next one is a green moth on a dark blue door.

Wavy lined emerald moth(?) by k kwb, on Flickr
Forum: Pentax Q 09-16-2017, 01:37 PM  
Third party batteries degraded much faster than Pentax one. What's your experience?
Posted By kwb
Replies: 18
Views: 1,051
Thank you for your responses!

I was wondering if all batteries of the same type are expected to die at around the same age and/or charging cycles, and if I got lucky on Pentax, but based on your anecdotes it doesn't seem to be the case.



Same type of battery but different OEM, that's an interesting possibility. They're both available on amazon: Fujifilm NP-50, Kodak KLIC 7004.

When my DOT-01s become unusable I will probably buy one each of Pentax and Fuji just to see how Fuji goes. If it's more similar to Wasabi than Pentax it's no big deal, it will still give me more shots than I care to count anyway :)
Forum: Pentax Q 09-15-2017, 06:47 PM  
Third party batteries degraded much faster than Pentax one. What's your experience?
Posted By kwb
Replies: 18
Views: 1,051
In the past I bought four third party batteries (a pair of Wasabi Power first, and a pair of DOT-01 after Wasabi failed) and they degraded much faster than Pentax D-LI 68 which is still going OK after about 33 months.

After all, I don't expect that a product that costs me 1/6 to 1/7 of the OEM per piece works as well as the OEM, that's OK, but I'm curious to know your anecdote. Here's mine.

I've gone through a pair of Wasabi batteries in just 17 months.
They were OK at first, started losing the capacity after some months (maybe 6 months?), and finally started to swell/bulge to the point where it was hard to remove from the camera, so I stopped using them.

I've bought a pair of DOT-01 batteries after Wasabis failed.
Just like Wasabi, they started losing capacity after some months. Now after 14 months, they still work but my 33 months old Pentax gives me 1.3-1.5 times more shots per charge.

I strictly rotate between my batteries, e.g. Pentax, Wasabi 1, Wasabi 2, Pentax, Wasabi 1, Wasabi 2....
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