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Forum: Pentax Full Frame 07-23-2020, 09:59 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
If I can weigh in on the mechanics aspect, I suspect the battery grip is merely changing the perception of shutter slap.

Try this activity. Take one hand under lens, one hand on the side grip. Support camera with both hands partially. With shutter speeds if 1/125s, you might perceive the shutter actuation.

Remove the hand under the lens, hold it only with the side grip, and actuate again. The feeling should be distinctly lower.

Can you replicate this result or not? With the 28-105 kit lens?

If yes, then battery grip merely causes the hand to not feel shutter slap anymore because vibrations die out.by the time they reach the hand via the battery grip.
Forum: Mini-Challenges, Games, and Photo Stories 07-14-2020, 10:21 AM  
Game Single In July 2020
Posted By brainwave
Replies: 245
Views: 7,560
What is an explore, if I may ask?
Forum: Pentax DSLR Discussion 07-13-2020, 10:17 AM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
Thanks for your response. It is not just the big image size.

I tested it. 15 MP files of K-1 in APS-C mode, 12-bit RAW take longer to write than 24.2MP files of 14-bit RAW on D5300. That is around twice the data almost. After shooting 5 images, the K-1 takes a further 4-5 seconds to write and clear the buffer whereas in the D5300 it is 1s delay and camera is ready for 5 shots again. Therefore, somewhere in the firmware or the hardware level the K-1 had a bout of bad engineering, no reason a 7 year old camera should best a 4 year old camera thats around 8 times the price. My gripe is that the K-1 ii had the same issue continue even though it was released two years later.

Hope Ricoh fixes it in the upcoming APS-C flagship, given how its already excellent in areas such as image quality and weather resistance.

---------- Post added 07-13-20 at 10:21 AM ----------



Hi Leekil, thanks for your comment. Unfortunately, it seems to be much more than the image size.

In 14-Bit Raw mode, 24.2 MP resolution files of D5300 clear up the 5 image buffer in barely over 1 second. In 12-bit raw (only mode on k-1), 15 MP APS-C resolution, the K-1 ii takes around 4 seconds to process a 5 image buffer. Therefore, it seems to me that something under the hood is unoptimized.

Hope to see some improvements in upcoming cameras.
Forum: Pentax DSLR Discussion 07-11-2020, 04:01 PM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
Thank you for the tips. This would make sense, as the speed shown on card is different from sustained write speeds. The San Disk Extreme Pro series with 95 MB/s can sustain writes of around 30-35 MB/s, and the ones rated only 30 MB/s might be sustaining a write speed of 10-12 MB/s. That might be why faster SD cards are faster. This doesn't explain why Pentax is slower to write images than my Nikon, but this information helps a bit. I have since ordered an Extreme Pro card for inserting into my Pentax K-1.



This can be possibly be explained by the way storage onto cards is handled internally. The SD card is essentially many individual 'cells', each cell being able to hold 1 piece of information. However, there are only so many times data can be stored and erased from a cell, before it turns faulty / leaky. Since people only partially fill up the cards all the time, in order to maximize SD card lifespans and minimize failures, the SD cards come equipped with a controller. The controller evens out the wear by spreading the data and storing it on the card. Over time, the controller spends more and more time searching for unused cells. when you do a thorough wipe it resets the state, giving controller full freedom to store anywhere since all cells are roughly equivalent.
Forum: Digital Processing, Software, and Printing 07-11-2020, 04:04 AM  
The Squirrel Mafia's new & improved RawTherapee thread!
Posted By brainwave
Replies: 163
Views: 19,119
Thank you for this work. It is great to see life being made easy for Pentax raw processing as well. Thank you so much!
Forum: Pentax DSLR Discussion 07-10-2020, 09:56 PM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
Thanks for the insightful answer. The metering and exposure settings for smaller image and noise reduction processing affecting camera responsiveness is new information for me. I'll try out out, thank you!

---------- Post added 07-10-20 at 09:58 PM ----------


Ah, the dial usage to change crop is a nifty tip, I'll do that too. Thanks!
Forum: Pentax DSLR Discussion 07-10-2020, 04:18 PM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
Hi Dave

Hopefully the morning coffee will improve your mood, you seem upset at my threads pointing out some possible deficiencies with the camera system I own :D

The Nikon was my first DSLR purchase and entry to photography - in July of 2019. I do consider it very fondly, but cameras are to me merely tools to make a picture so I try to be objective rather than emotional while thinking about them. I came by some money so jumped the ship to Pentax, and its a camera I enjoy using very much minus the gripes.

The reason behind these posts are to get other pentaxian's experience on how they handle it. Both threads set a context to explain where I am coming from, and then end with clear questions seeking advice. As to the critical nature of the threads I have been starting - I hope it doesn't bother you too much. The more I use my camera, the more advice I shall seek from forum users on how to work around the issues I notice.

If you wish to see some positive posts of mine, you could checkout my Flickr or the Single In posts, which should be ample cheerful/thoughtful! At the moment I am not considering selling the equipment, there is more fun to be had first. Rest assured I shall reach out to you with an offer should I decide to sell it.

Wish you a good day,
Brahm
Forum: Pentax DSLR Discussion 07-10-2020, 01:02 PM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
I was wrong, I must have misread the SD Card 1 slot on the camera specs - it is only UHS-1 certified. Thank you for pointing out. I have already disabled all processing in my customized "fast mode", it definitely has helped me to maintain the "flow" of shooting since the camera doesn't lock up.

---------- Post added 07-10-20 at 01:05 PM ----------


I am aware, that is why I cited the D5300 as an example for cost not being a factor in having good write speeds. I do think they could have done a better job over at Ricoh, at least making the SD Card writes less painful.
Forum: Pentax DSLR Discussion 07-10-2020, 11:20 AM  
The K-1 ii deserved a faster write to SD card, UHS-II speeds are simply not accurate
Posted By brainwave
Replies: 25
Views: 1,526
EDIT : I was wrong about UHS-II certification, must have confused with another system. The K-1 has UHS-1 certification only.

I have a gripe with my otherwise beloved K-1 ii, I am interested in knowing how you guys are managing it.

The writing of images to SD card on K-1 ii is painfully slow. Sure the RAW files are large, but even compared to my friends Nikon D810 with similar megapixel sensor the writing speed is slow. My 2013 model of Nikon D5300 writes SD card Raw + JPEG files in 2 - 3 seconds after filling up a buffer of 5 RAW shots. My Pentax K1 takes over 10-11 seconds to write 11 RAW shots! Essentially this means both are writing at around 30 MB/s speed, despite having been built half a decade apart, with the D5300 taking the lead at times. I purchased the D5300 with 18-55 mm and 70-300 mm lens for $250 locally, which is evidence that the tech used to make the Nikon is quite cheap by now. Surely a premium camera deserves better SD card write hardware?

And if I wish to also copy the images onto SD card slot 2 as a safety measure against sudden card failure, that adds 30-40% more wait time because there is simply no parallel write between two slots. This was silly. Today I missed a shot of the bird flying because it took an unexpected turn, and by the time camera was done writing but bird was out of view.

As in 2016 the SD card write speed of of k1 was already considered one of its weaker points, I really wish pentax had heard and engineered a faster write speed for the K-1 ii refresh. It is a limiting aspect of this camera in high activity situations. The UHS-II certification of SD card slot 1 is also a gimmick - the writing is nowhere near UHS-II write speeds. Such a delight to use otherwise, why do this Ricoh!

I have resorted to shooting JPEG only in high action situations (programmed as a user mode) to keep the buffer length longer, and miss fewer shots.

- How are you guys managing the long write times to SD card?
- Are there any particular SD cards that offer better experience?
- Would you shoot 15 MP RAW or 36 MP JPEG, to increase the buffer depth and reduce the writing time of the K-1 beyond what it offers for 36 MP raw?

Any tips are welcome, and thanks for your response in advance!
Forum: Pentax Full Frame 07-07-2020, 06:36 AM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
I just saw that the 28-105 lens is the only D-FA lens not welcome in Ricoh's own Best Photo Contest. Why the special treatment to this lens if its that excellent?
Forum: Monthly Photo Contests 07-07-2020, 06:14 AM  
Red October
Posted By brainwave
Replies: 24
Views: 272
Excellent perspective, well spotted, nicely composed, well shot.
Forum: Photo Critique 07-06-2020, 11:33 PM  
Macro Moth
Posted By brainwave
Replies: 4
Views: 631
Thanks for your critique, I agree. The beast was near the limit of what I could reach as it was too high, which forced this perspective. But you're very right - if I could have somehow aligned the beast along the focus zone it would have been perfect.
Forum: Pentax Full Frame 07-06-2020, 02:05 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
Is the sharpness and color rendition comparable to modern D-FA lenses, once these manual lenses are stepped down?
Forum: Pentax Full Frame 07-06-2020, 02:00 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
The moth shot was made using the kit lens with a cheap $10 macro filter + 2 close up filters (to get really, really close). The shot was also made hand held at a depth of field of a few hairs so I wouldn't blame the autofocus even if the auto-focus was missed, I was pleasently surprised I got away with that much to be honest :D

EDIT - I checked and it is simply the super-limited depth of field from having to use 1 macro + 2 close up filters to picture the tiny moth, the autofocus worked perfectly once I put it in "spot" mode.
Forum: Pentax Full Frame 07-06-2020, 01:54 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
Its great to hear that stepped down the lens is right up there in image quality (I take most of my shots stepped down anyway). That was my only real concern, whether I am losing out by restricting to one lens.
Forum: Pentax Full Frame 07-06-2020, 01:52 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
I was only curious to know if I am losing out by using only the 28-105. I no longer have the 24-70, it is just out of memory at this point but I do remember it to have a different color rendition (which I liked more). If I am not losing out on sharpness or color rendition by using only the 28-105, then I guess I just need a 100 macro for portraits and I am golden.

It is great to know that these many lenses make great pairings with the K-1, it will certainly help me have some other affordable lenses for a little variety.
Forum: Pentax Full Frame 07-06-2020, 01:12 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
This is true specifically for India, and only for the 35mm and 50mm bracket. I did check the Nikon lenses for 70-200 f/2.8 and boy its as expensive as Pentax lenses, don't know if it is weather sealed to go with.

Do you happen to know if there any difference in color rendition between 28-105 and the 24-70 f/2.8?

In any case, here is my flickr for reference, all images are with the K-1 and the kit lens (sometimes adding a screw-on macro filter for some close up shots).
Forum: Pentax Full Frame 07-06-2020, 12:58 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
Thanks a lot for this response, I think I am going to hunt for these lenses used on ebay/Pentax Forums and pay the 30% premium to import them to India after the COVID-19 situation ends and shipping routes open up. Thank you, this really opens up a lot of options.
Forum: Pentax Full Frame 07-06-2020, 12:47 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
The color science part I am still not sure - since I also switched my "processing" from lightroom to Raw Therapee, and I do not yet know how to use Raw Therapee properly. So you're saying that both - the kit lens and the 24-70 should have nearly identical renderings in color around F/6.3 or F/8? If someone has both - the kit lens and the D-FA 24-70 lens, it would be great to know for sure.
Forum: Pentax Full Frame 07-06-2020, 12:37 PM  
Pentax K-1 Mark ii user, feeling frustrated about being stuck with only the kit lens
Posted By brainwave
Replies: 84
Views: 3,835
EDIT 2 : I just saw that the 28-105 lens is the only D-FA lens not welcome in Ricoh's own Best Photo Contest. Why the special treatment to this lens if its that excellent?


Hi All. I recently joined Pentax forums and its been a fun ride. This post will be a little bit of a rant, but I would like your inputs on certain things I have on my mind.

I purchased the K-1 ii with the 28-105 kit lens from Europe last year. Given the 1:80 conversion ratio between Indian currency and the Euro, it was an expensive purchase but I was able to afford it thanks to a small sustainance allowance I received when I was working there (coupled with my savings from my job in India, it was enough). The kit lens produces decent images particularly stepped down to f/8 and lower. Maybe stepping it down lesser will also work, I have just stepped down to f/8 whenever I needed sharpness as it was a guaranteed hit. However, I have borrowed and used a D-FA 24-70 f/2.8 lens during my Europe stay and that lens seemed at a different level altogether. The colors popped a lot more, the sharpness seemed much more, bokeh was possible. The color science also seemed different altogether! I don't seem to be able to replicate the results with my kit-lens. I never had the chance to compare them side by side however, so this is only out of my memory.

I always knew a zoom like the 24-70 f/2.8 was going to be super expensive, but I was hoping to use the cheaper primes. The sales guy also told me Pentax will be releasing more full-frame lenses and I took his word for it. As a bonus, I was hoping to use the older but more affordable lenses on my K-1 with slight loss in autofocus speed. What saddened me was that all new lenses released by Pentax were very expensive, made prohibitionally so by the fact that Indian salaries are quite low, there is a 1:80 conversion ratio between Euro and INR, and there is a 30% import premium on all imports (since Pentax is not available in India, I have to import it). And most affordable older lenses do not elicit the same quality from the K1, they just don't seem to have the optics for it. The limiteds such as 77 f/1.8 do have great optics, but even those are super expensive.

Comparing with competitors, Nikon and Canon have primes in 35mm, 50mm f/1.8 that are both sharp and affordable - albeit fragile. Fuji has a good footprint in India and affordable primes. Pentax has almost no presence in India - so no second hand local market either. As a last resort, I was hoping to buy used lenses and pay the 30% import premium in order to use my camera to the fullest. But turns out shipping to India is also a hassle and that route is also closed.

I really regret not doing my full research before jumping the ship to full-frame Pentax.

So, all things said and done, I now am stuck with a great camera but only the kit lens. This is likely going to be situation until 2027/2028. I hav three questions :
  1. How much am I missing out by using only the kit lens, and not being able to afford any of the newer Pentax released lenses?

  2. What used lens options are best in terms of bringing out great colors and sharpness, like the D-FA 24-70 f/2.8 did on the K1 body?

  3. What are the equivalents of affordable, but sharp 35mm f/1.8 from Nikon/Canon?


Eager to hear your thoughts, its making me restless that I have a great camera body but I will always draw only average results.

EDIT : Here is my flickr with image samples (not reference samples, all are post-processed as there were taken for the single-in challenge). Some images were taken with a flash and/or a 10$ screw-on macro filter. As advised, I will pull up the previous 24-70mm shots and post comparisions with my current 28-105 kit lens in a follow-up post.
Forum: Mini-Challenges, Games, and Photo Stories 07-02-2020, 03:02 PM  
Game Single In July 2020
Posted By brainwave
Replies: 245
Views: 7,560
Which lens is this?
Forum: Photo Critique 07-02-2020, 12:52 PM  
Macro Moth
Posted By brainwave
Replies: 4
Views: 631
Thank you!
Forum: Pentax K-1 07-02-2020, 04:41 AM  
Post your K-1 pictures!
Posted By brainwave
Replies: 30,476
Views: 2,740,868
Only including pictures of last few weeks as otherwise there'd be too many :

Below picture is called "Moth", and taken as apart of single-in july challenge


The below picture I call "Relapse", to showcase the struggles of an addict.


The below picture I call "Cabbage"


Below picture is called "Shower Lights"


Below picture is called "Humpty-Dumpty


Below picture is called "Bubbles"
[IMG]'https://drscdn.500px.org/photo/1017990343/m%3D900/v2?sig=760ff774562082b2af2e8d4f4ea673042d908eeaa59605e09b8932725102c899[/IMG]

And finally, last picture is captioned "Time is Money", taken as part of July single-in challenge


Critiques welcome!
Forum: Photo Critique 07-01-2020, 12:21 PM  
Macro Moth
Posted By brainwave
Replies: 4
Views: 631
Objective was to just take a compelling picture. What could I have done better?
IMGP3697 by bpmishra92, on Flickr
Forum: Monthly Photo Contests 06-29-2020, 01:20 PM  
Filament
Posted By brainwave
Replies: 3
Views: 142
The idea was to appreciate the filament of a tungsten light bulb. While normally closed, the filament heats up, expands, glows a mighty yellow - sheer brilliance. A very small depth of field was used for the shot as I wanted most of the filament to appear a continuous line, and showing the coils of the springs only on a very short area of the picture (my "subject", so to speak). At the back of the filament, one can find zig-zag lines, coils, and other industrial machinery looking components but rendered out of focus. Overall, it was very satisfying getting a foreground, subject, background out of a simple light bulb.
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