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  • Give it Your Best Shot • Re: Flowers 2015 May 26, 2015
    Holy macro (no pun intended). I have not posted on that forum in ages. I like your solution much better, JB. I have been yearing for that gemfor a while now. May be I should sell 24/f2 and get that 135. This one is a 64 image overlay in 2 rows. I do need to […]
    sury
  • Give it Your Best Shot • Re: Flowers 2015 May 26, 2015
    Never heard of a culset. Googled it and look at what I found:http://www.dpreview.com/forums/post/26785843My short answer is that I shrink MFD by using the 135mm. Statistics: Posted by jbtaylor — Tue May 26, 2015 8:16 pm
    jbtaylor
  • Give it Your Best Shot • Re: Tiny sensor revenge gallery thread! May 26, 2015
    Yeah, those big ones on buildings are just like the ones in Madrid I mentioned earlier -- except they were in Spanish. I haven't seen any iphone posters here in Budapest though.Statistics: Posted by bakubo — Tue May 26, 2015 8:02 pm
    bakubo
  • Give it Your Best Shot • Re: Flowers 2015 May 26, 2015
    That is a fantastic bokeh. What is the MFD on that beauty? Have you tried "cutting it short" by using a culset? I did precisely that recently on Rokinon and here is how it looks. Nothing compared to your shots but then... No one can take away my right to be dumb right? I was […]
    sury
  • Give it Your Best Shot • Re: Landscape 2015 May 26, 2015
    Thanks Andy and Sury.Statistics: Posted by the_hefay — Tue May 26, 2015 7:46 pm
    the_hefay

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Pentax Q up to battle it out with NEX and Ricoh

Although it’s not Alpha, this product announcement – embargoed until 5am UK time, 23rd June, though no doubt by adhering to the embargo we will be a day later than hundreds of websites breaking it – speaks volumes for the impact of Sony’s Alpha system, its interformat lens compatibility, and the future of non-SLR systems.

Kenko, a Hoya group company like Pentax, showed a C-mount digital camera body in February, as a prototype planned for release this summer. Nothing more has been heard of this project. It looked rather like the Pentax in a way.

But Pentax Q is not a NEX competitor as it uses a tiny lens mount and a tiny sensor. It’s more like today’s equivalent of the Pentax 110 SLR system. Only Ricoh currently uses such small sensors in a nominally ‘interchangeable lens’ (not really) camera format. And our own testing of the Fujifilm F550 EXR, with a similar back-illuminated CMOS sensor, indicated that the gap between such microformats and the APS-C subformat is massive.

Just as your first dust spot will be… the anti-dust system is going to have to be 100% efficient, as a single dust bunny landing on a 1/2.3″ sensor will be disaster.

The lens throat is approximately 38mm diameter, very slightly smaller than Leica screw. The back focus is around 9mm, or half the thickness of the NEX body from sensor surface to flange. This will present the anti-shake, anti-dust vibration mounted sensor (on a magnetic carriage) in a fairly exposed ‘well’. The high speed limitation of 1/2,000th is unexpected, but the camera does not use a focal plane or electronic gating; instead it uses leaf-shutter lenses, which due to the small aperture size, can achieve this fast speed. But they can still only manage 1/250th flash sync, when it would be expected that a leaf shutter on this scale could achieve 1/1,000th.

Here is the Pentax Q system, due to go on sale in the Autumn (press release with comments).

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