Web Analytics RiceHigh's Pentax Blog: 2020

Saturday, August 01, 2020

When the X-T4 and GFX 100 Produced Images Look the Same




I am afraid that same case applies for the Pentax K-New Vs the 645Z, which they have exactly the same APS-C and 44x33mm sensors respectively and that the final conclusion drawn would possibly be the same. :-P

Dimensions and Wireless+Power Info of the K-New

https://twitter.com/nokishita_c/status/1289117575759032320
(in Japanese)


Wi-Fi(11b/g/n) with Bluetooth; Dimensions: 134.5mm W x 103.5mm H x 73.5mm D without protruding parts (138.5mm W x 103.6mm H x 80.4mm D maximum), i.e., a little bit larger than the K-3/II but with less depth; Power: D-LI90 with optional vertical grip D-BG8.

Btw, the previous secret unmarked button is just the lock button. :-(

Sunday, July 26, 2020

What is the LCD Screen Size of the K-New?

Since Pentax (Ricoh) has yet not told us more specs of the K-new, in order to estimate the rear LCD screen size of the K-new, which they told us that it was "huge", I took a much similarly angled picture of my KP and then measured the dimensions of the same different parts.



In particular, I measured the dimensions of the rear wheel/dial openings, and then the diagonal lengths of the screens, calculated and got the ratio for each camera and then calculated again the ratio between the two ratios. :-)

It is found that the K-new's screen is about 1.13X diagonally larger than that of the KP. Hence, since the KP's screen is in 3 inches, it is estimated that the K-new's rear LCD screen should be in about 3.4", case closed.


Read Also:  100% Bingo! I Derived Exactly Correctly for the 645D Actual Sensor Size!

Monday, July 20, 2020

PetaPixel Supports the DSLR Niche Strategy of Pentax/Ricoh

https://petapixel.com/2020/07/18/why-pentax-is-making-the-right-call-in-sticking-with-dslrs/

The author may have a point. But the market trend is towards interchangeable lens Mirrorless, especially Full Frame ones. Who will jump boat to the Pentax brand because of Reflex? Is it just the wishful thinking of Pentax/Ricoh themselves? :-o After all, the reverse may be true.

Thursday, July 16, 2020

New Video about the New APS-C Flagship, on July 22



Again at 1900 hours Japanese time. Congrats to Pentax/Ricoh for becoming a YouTuber or a KOL online!

Tuesday, July 14, 2020

Shootout of D FA* 85 Vs FA* 85 Vs A* 85 on K-1 II




http://pentaxfans.net/thread-164447-1-1.html
(in Traditional Chinese)

The posted test pictures with simple captions are self-explanatory. For the comments made by the tester, the Google-translated English page could be viewed. After all, I do agree with him for most of his comments and observations.

Direct Comparison of D FA*85/1.4 against Zeiss Otus 85/1.4 (Tested in the Field)

A Pentax user at the Chinese Xitek Pentax forum shares his friend's sample photos for a direct side-by-side comparison made between the Pentax D FA* lens (put on a K-1 body) and the Zeiss Otus 85/1.4 lens (put on a Panasonic S1R). Here we go:

(Left: Pana+Zeiss, Right: Pentax; Click to Enlarge in around 2000 to 3000 pixels in width)












EXIF data are partially preserved in the original samples in the original post. Despite that the Pentax pics tend to be darker (and the tester also made some exposure adjustment by himself for some pics) and that the Pana pics tend to be over-exposed a bit, the resolution of the Pentax lens seems to be better when the lenses are wide-opened but yet the Pentax Star lens does exhibit some obvious purple fringing at large apertures, however.

Btw, I prefer the colour rendition of the Pentax gear over the Zeiss on Pana combo. :-)

For other standalone samples of the D FA* lens (with key EXIF), they can be found in this post in the same forum thread. I just downloaded them all and have re-uploaded them here for fast and easy viewing:

(Click to Enlarge to around 2000 to 3000 pixels for the longer side, without EXIF)

Monday, July 13, 2020

What is the Value of Pentax Cameras in Future?

Ricoh Imaging Japan writes at Twitter that they will put online a video on 16 July (at 1900 hrs Japanese time, or 1000 hrs UTC) for briefing us about the future of Pentax cameras and their value. So, stay tuned.

p.s. They haven't published the URL of their upcoming video, though. Please look at their above twitter page or official Japanese website by then.

Friday, July 03, 2020

CIPA Reveals that Total Shipments of DCs and ILCs are Only 27.4% of Those in 2019

CIPA has published figures about the digital camera shipments, which are both only 27.4% of the quantities in 2019, as in May 2020, for both Interchangeable Lens Cameras (ILCs) and Digital Still Cameras (DSCs).



After all, in view of the rather poor sales of cameras in this year, would it be really wise (or unwise) for Pentax (Ricoh) to launch their new flagship in September as rumoured? :-(

Monday, June 29, 2020

Pentax Aperture Block Problem Class Action Lawsuit

https://topclassactions.com/lawsuit-settlements/consumer-products/electronics/pentax-camera-class-action-alleges-aperture-defect/

"A camera owner has filed a class action lawsuit against Ricoh USA Inc. over claims that the company’s line of Pentax camera products are defective in a way that causes them to produce useless, almost completely dark photographs."

Tuesday, June 23, 2020

Unofficial: French D FA* 85/1.4 Special Gallery

https://pentaxklub.com/galerie-en-special-d-fa-%E2%98%85-85-f-1-4/
(in French)

With both scenery and portrait samples. Unofficial.

Official: D FA* 85mm F1.4 Special Gallery

http://www.ricoh-imaging.co.jp/japan/products/star_lens/special/sp_dfa85-14/specialgallery/

(in Japanese)

No full or larger size of the photos are available nor those small-sized samples can be downloaded. For that small size of the samples, the image quality of the lens cannot be judged, sad. :-(

A D FA 70-210 F4 Practical Test


http://pentaxfans.net/thread-164343-1-1.html

Article/Post in Traditional Chinese, but the captions in test photos and crops are self-explanatory.

Sunday, June 07, 2020

New Lens Patent 70-300 F4.5-5.6 with In-lens SR


https://ipforce.jp/patent-jp-A-2020-86357
(in Japanese)

A few key highlights are as follows (Google Translated):

[Name or name] Ricoh Co., Ltd.

[0008]
However, in the zoom lens system of Patent Document 1, since the second lens group 2b, which is the image blur correction lens group, is close to the stop on the long focal length end side (tele end side), the long focal length end side (tele end is set at the time of image blur correction). The eccentric coma aberration generated on the side) tends to be large. Therefore, the second b group, which is the image blur correction lens group, is composed of three or more lenses, and there remains a problem in weight reduction of the image blur correction lens group.

(Table 5)
Short focal length end Medium focal length Long focal length end
Focal length 72.2 135.0 293.2

F number 4.43 4.88 5.34

(Table 8)
Short focal length end Medium focal length Long focal length end
Focal length 72.0 135.1 293.6

F number 4.59 4.96 5.52

A list of variants of the same design gene are patented. While the focal ranges are almost the same, the maximum apertures could vary a bit but the variations are insignificant.

FA*85 Vs D FA*85 Size Comparison


Tuesday, June 02, 2020

Possible New Optical Designs of the DA*16-50 F2.8 PLM


I recall the old post by the Pentax Rumors about the various new DA 16-50/2.8 lens designs and patent(s) for improved performance, one of which (amongst 10 nos.) would be selected by Pentax for this new lens. Which will they use finally? 16 elements in 13 groups (5 designs), 17 elements in 13 groups (3 designs), 15 elements in 12 groups (two designs)? We shall know by the next year of 2021. :-)



Monday, June 01, 2020

Review of 21mm Full Frame Lens Optical Designs


Pentax DA 21mm F3.2 (APS-C)

Norton 21mm F1.4

 
Skopar 21mm F4
 
 Ultron 21mm F1.8

Voigtlander 21mm F1.4

Carl Zeiss 21mm F2.8

Friday, May 29, 2020

Prediction: What New Features of the K-New Would Have?

Presuming that they have the same APS-C sensor, and then going through the specs of that Sony sensor and then the set of features of the X-T4. Here we go, for the possible new features that had never been offered by Pentax before, in their upcoming new flagship:

- 26MP BSI CMOS sensor (for its high ISO performance, this sample at ISO 10000 may shed some light)

- 18.82 fps maximum frame rate with 12-bit RAW (which will be converted to 8-bit JPEG anyway, limit of the sensor for the read-out bit-depth and rate combinations)

- If 14-bit RAW is implemented (KP and K-1/II have 14-bit RAW), the frame rate for continuous shooting still picture will be in between 6.84 (for highest 16-bit readout of the whole picture) and 18.82 (as mentioned above) - the above brief marketing sheet of the sensor does not mention about the 14-bit readout modes and rates

- 10 fps is possible (considering that the XT-4 offers 15 fps continuous shooting with mechanical shutter, unless Pentax's latest mechanical engineering plus image processing speed are yet not up to there. And, the Pentax has a mirror but the Fuji does not. )

- 425 point on-sensor phase-matching AF in Live View mode, which the X-T4 has

- 10-bit full-frame 4k video in 30p (limit of sensor) or 12-bit 2k video at high frame rates (55 to 111 fps which is the limits of the sensor); Or 10-bit 4k video at 60 fps is possible with the 1.18x crop factor of the centre

- 4:2:0 colour sub-sampling for H.264 codec (which is a bit too much for the dropping of the colour data) and 4:2:2 for H.265 (Pentax may have a different codec and implementation, though)

But since that the K-new will not have any articulated screen / flipped monitor, the video capability of it will not be too strong anyway?

Other sample images of the production X-T4 in DPR's latest full review of the camera can be found here. Also, a quick glance with the comparometer at the DPR, it seems that the ISO performance will be improved from the KP's by one to two stop(s), and which will undoubtedly exceed the IQ of the K-1 II.

Yaotomi's YouTube Tests of the D FA* 85




Thursday, May 28, 2020

Comparing the Optics of the Contemporary Giant 85mm Lenses

1. Pentax DFA 85/1.4: 12 elements in 10 groups, 1255g (without hood), 82mm filter thread


2. Canon RF 85/1.2: 12 elements in 10 groups, 1195g, 82mm thread


3. Sigma Art 85/1.4: 14 elements in 12 groups, 1130g, 86mm thread


4. Zeiss Otus 85/1..4: 11 elements in 9 groups, 1200g, 86mm thread 


Well, whilst the new Pentax is similar to the Zeiss in design (but with one additional element), it wins in weight amongst the four, which is actually the heaviest 85mm prime ever made on Earth. Good! ;-P

D FA* 85 Official Special Site

Development Story: http://www.ricoh-imaging.co.jp/english/products/star_lens/special/sp_dfa85-14/interview/

Practical examples by three Japanese professional photographers:

http://www.ricoh-imaging.co.jp/english/products/star_lens/special/sp_dfa85-14/impression/

Enjoy!

Wednesday, May 27, 2020

Trick: Installing Pentax Digital Camera Utility Without the Software CD

Step 1: Find an USB drive;

Step 2: Download the Digital Camera Utility "software updater" from the below official link:

http://www.ricoh-imaging.co.jp/english/support/digital/dc_utility5_win.html

Step 3: Copy and save the file to the root of the USB drive;

Step 4: Rename the Label of the USB drive to S-SW140;

Step 5: Click and open the Zip file, choose the 32-bit or 64-bit folder and execute the Setup;

Step 6: Install the program as if it is just a normal Setup ad complete the installation in a moment.

I hope this trick helps and could be useful to any Pentax user just in case.

D FA* 85 Weight and Price

According to the latest post by Nokishita @ Twitter, the new lens weighs 1255g and will be sold at a price of 248,000 Japanese Yens including 10% tax. Hence, it would be at around US$2,075 without tax.

Furthermore, it is stated that the official launch (marketing) date of the new lens will be on June 26.

Monday, May 18, 2020

D FA 21 Limited Dimensions and Derived Speed



From this roughly to-scale drawing, putting aside the small perspective and other scaling errors, I do agree that the estimated filter thread is in 67mm. When compared to the FA 20 F2.8 lens which also had a 67mm front thread, the sensible guess of the maximum aperture of the new lens would be F2.8, too. It should not be a re-packaged FA 20 as the new lens is much longer, nonetheless. Good. ;-)

Friday, May 15, 2020

D FA* 85 F1.4 1st Samples

https://pentaxofficial.com/en/5548/

Looks good for the downsized pics, with EXIF for photos in the original link.