New Ricoh Lens Patent (24mm F2 APS-C)

http://egami.blog.so-net.ne.jp/2014-02-14
(in Japanese)

Pentax FF? Ricoh: "We Cannot Talk about It" !?

http://www.pentaxforums.com/news/cp-2014-interview-with-pentax-japan.html

Question 18: Does Ricoh Imaging plan to tackle the full-frame / professional DSLR market, and do you see cameras with full-frame sensors as something that would fit into your product lineup? Are you still developing this type of product?

Research and development into full-frame is still ongoing. We cannot talk about it yet.

Official Information of the "New" HD DA 1.4X Teleconverter

http://www.ricoh-imaging.co.jp/japan/products/lens/k/converter/lc-1_4x-aw/

The official on-sales date in the Japanese home-market will be March 7th. A full list of compatible Pentax K-mount digial lenses is provided, note that not every DA lens of Pentax/Ricoh is compatible.

Besides, it does look very familiar for its appearance specs including the physical parameters, many things are just too close to my ancient "Tamron" Pz (Power Zoom) TC 1.4X Model MC-4 that I purchased 14 years ago, which is yet believed to be original manufactured by Kenko!

For more information of the Tamron 1.4X MC4, look here:

http://www.ebay.co.uk/itm/Tamron-F-AF-Tele-Converter-1-4X-Pz-AF-MC4-with-box-and-papers-/121171067435



Well, even the lens release lever looks exactly the same, what a "co-incidence"! :-o ;-)

But I just wonder, why it takes so long for Pentax to release such an OEM product, if it really is, which has been delayed for so many years since it was first announced back to 2008!?!

Nonetheless, my prolonged experience for that adapter is that it is great for APS-C cropped image circle but is just fair to rather mediocre optically when it works with Full Frame, no matter film or digial. Enough said! :-(

BTW, for real photo samples for how the "Tamron" 1.4X MC4 performs optically, here you will find some samples of mine:

K-5D Mark III: DA 18-55 II Converted to a 24-80 FULL FRAME Lens!

My Pentax Lenses are Given Completely New Lives! :-D

Everything starts with a new Full Frame body for the K-mount! :-D



Below are *some* (10 models) of my Full Frame Pentax lenses on the K-7R: ;-p


F 17-28/3.5-4.5 Fish-Eye


FAJ 18-35/4-5.6 AL


FA 24-90/3.5-4.5 AL [IF]


FA 28/2.8 AL


DA 35/2.4 AL


F 35-70/3.5-4.5


FA 43/1.9 Limited


A 50/2


DA 70/2.4 Limited


D FA 100/2.8 Macro

Size Comparison Re-visited: 5D3 Vs D800/E Vs 645D Vs A7/R

1. 5D3 Vs D800E:

http://camerasize.com/compare/#312,291

2. 645D Vs D800E:

http://camerasize.com/compare/#211,291

3. 645D Vs A7R:

http://camerasize.com/compare/#211,488

4. 5D3 Vs A7R:

http://camerasize.com/compare/#312,488

645D II is Coming! :-o

And also with a new 645 digital lens, an ultra-wide angle zoom:



Via: Photo Rumors.

As for the sensor, it will not be a CCD one anymore. This is a good news for me, as I may be able to get an old and "useless" 645D I cheaply, to use my old 645 film glasses! :-D


Related:

I've Cropped My Pentax 645 Lenses Myself, in 1.6X! :-o

The PENTAX Name is Gone! >:-[

Via Photo Rumors.

Ephotozine HD20-40 Review w/ Samples

http://www.ephotozine.com/article/hd-pentax-da-20-40mm-f-2-8-4-limited-dc-wr-lens-review-23898