Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-23-2016, 08:15 AM   #256
Veteran Member
MJKoski's Avatar

Join Date: Aug 2016
Posts: 761
Probably so. Well, such long term investments anyway and not that I would be able to purchase FF Z2 if it comes around :]

Z is coming to "affordable" price range these days. Will be interesting to see Fuji prices.

09-23-2016, 08:19 AM   #257
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 2,861
QuoteOriginally posted by photoptimist Quote
Then you're not going to like the Fuji GFX lenses which are almost certainly optimized the 645 crop frame image circle.
...nor the XD lenses of the Hasselblad X1D-50c, which are also limited to the 33x44 crop format. So is the Hasselblad X mount, by the way, and the Fujifilm G mount too.
09-23-2016, 08:34 AM   #258
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,000
Exactly, at least there will be no image circle lens fail with those crop sensor systems....
Or the fail is sensor-size conceptual.

---------- Post added 23-09-16 at 08:38 ----------

QuoteOriginally posted by MJKoski Quote
Probably so. Well, such long term investments anyway and not that I would be able to purchase FF Z2 if it comes around :]

Z is coming to "affordable" price range these days. Will be interesting to see Fuji prices.
It has already been hinted that the Fuji body would cost around USD 10,000
So Pentax should keep the price advantage.
09-23-2016, 09:04 AM   #259
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,667
QuoteOriginally posted by Mistral75 Quote
...nor the XD lenses of the Hasselblad X1D-50c, which are also limited to the 33x44 crop format. So is the Hasselblad X mount, by the way, and the Fujifilm G mount too.
Size maybe makes the difference. The 645z is a large beast compared to the fujifilm and hasselblad for having the same sensor.

09-23-2016, 09:10 AM   #260
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 2,861
QuoteOriginally posted by Zygonyx Quote
(...)
It has already been hinted that the Fuji body would cost around USD 10,000
So Pentax should keep the price advantage.
More precisely, (much) less than USD 10,000 with viewfinder and 63mm f/2.8 standard lens. So more on less on par with 645Z + 55mm f/2.8
09-23-2016, 05:39 PM   #261
Pentaxian




Join Date: Sep 2013
Location: Pasadena, CA
Photos: Albums
Posts: 1,113
If they introduced a mirrorless with a kind of AF that Olympus has (i.e. accurate and fast), it would probably answer all my troubles with Pentax.
I hope if it is a new mount, it will be able to accept K-mount with a fully functional adapter.
09-23-2016, 06:27 PM   #262
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Kirkwood (St. Louis) MO
Photos: Gallery | Albums
Posts: 19,965
QuoteOriginally posted by D1N0 Quote
It needs a complete redesign of the MF body. Larger sensor, larger shutter, larger mirror, larger mirrorbox, larger pentaprism. I am not sure if Ricoh can stomach that.
Starting with the 67 body . . . ??
09-23-2016, 08:43 PM   #263
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,114
For studio work - the size of camera has no any difference.

There are only two places where the size is important for mirorrless MF cameras. Street shooting and travel to extreme places, where the weight is serious problem.
But smaller size and smaller weight = weaker battery. Mirrorless needs more energy and more batteries for travel.

Small size, if your arms are big, is not comfortable too. There are many factors.

---------- Post added 09-23-2016 at 08:47 PM ----------

QuoteOriginally posted by photoptimist Quote
Then you're not going to like the Fuji GFX lenses which are almost certainly optimized the 645 crop frame image circle.
By the way, Leica S lenses could not cover 56*41.5 mm sensor too.
645 system from Pentax has advantage


Last edited by ogl; 09-24-2016 at 06:08 AM.
09-23-2016, 10:44 PM   #264
Site Supporter
RGlasel's Avatar

Join Date: Sep 2013
Location: Saskatoon
Photos: Gallery | Albums
Posts: 1,301
QuoteOriginally posted by Simen1 Quote
645FF with 100 Mp, at 20K$
At that price it better have a name badge with more cachet than Pentax or Ricoh. As long as a MF camera has more MP than a 24mm x 36mm sensor camera, it doesn't matter if it has 50 or 100, professionals will spend money on glass, aspirational buyers will spend money on a brand name. Ricoh found a sweet spot in the MF market with the 645Z in terms of price and performance, the next steps will be to get money from 645 owners for new glass or flash systems.
09-24-2016, 01:32 AM   #265
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,211
QuoteOriginally posted by Mistral75 Quote
If the D FA645 28-45mm were to cover the full 645 image circle, which it does not, it would be equivalent, in terms of field of view, to a 17-28mm on a 24x36 camera. Quite an odd combination. As other have pointed out, covering the full 645 image circle would have made the lens much bigger and more expensive (as if you asked a 16-50mm f/2.8 to cover the 24x36 image circle and not only the APS-C format).
The D FA645 28-45mm is non existant lens, you're talking about the DA645. As any DA, it is cropped lens (and you know that of course).
There's no surprise at all. Why even anyone would question that ?
09-24-2016, 01:40 AM   #266
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 2,861
QuoteOriginally posted by thibs Quote
The D FA645 28-45mm is non existant lens, you're talking about the DA645. As any DA, it is cropped lens (and you know that of course).
There's no surprise at all. Why even anyone would question that ?
Indeed, its name is DA645 28-45mm, my mistake. Otherwise, we say the same thing.
09-24-2016, 01:41 AM   #267
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,211
He's wrong but so are you AFAICT:

QuoteOriginally posted by photoptimist Quote
You remind me of the president of the scanner engineering company I once worked for. Everything was easy to him. But:

1. Semiconductor sensors are thicker and bigger than film: that pushes the shutter toward the lens, intruding into the space required for the focusing screen and mirror box
Quite dubious. It pushes electronics behind the sensor (toward the screen on the back). No way the other way around. IMO.

QuoteOriginally posted by photoptimist Quote
2. Even if there is an off-the-shelf 645-size focal plane shutter, it's almost certainly a different shape which likely changes the mirror box design (the old 645N shutter is obsolete with a 1/60 sec synch speed)
Why would anyone even think about keeping every little piece of the 645N is beyond me. That's your point I know.
Of course it should be changed. I see no real difficulties but of course it should fit and and such imposes redesign. Agreed (basically).

QuoteOriginally posted by photoptimist Quote
3. The 645N had only a 3-point AF system: if that's not good enough, the new camera needs a redesigned secondary mirror and mirror reflex mechanism.
Hum, Pentax proved 2 times already that the re-used APS AF modules. So no, no redesign needed (would be nice though).

QuoteOriginally posted by photoptimist Quote
4. Is the 645N's 6-segment light meter competitive: if not, then parts of the prism need redesigning
See AF point.

QuoteOriginally posted by photoptimist Quote
5. Is the 645N's viewfinder information display competitive: if not, then parts of the prism need redesigning
See AF point. Again.

QuoteOriginally posted by photoptimist Quote
Maybe the outward shape of the 645FF might look like the 645N but almost everything inside it will need to be designed from the ground up. That's especially true if the 645FF needs to offer competitive features in AF, metering, and OVF information displays.
No, not from the ground up. In the end though, just taking a 645N and changing a few bits here and there is not gonna happen (that was your point I think). But no, everything does not need to be a complete redesign.
09-24-2016, 01:43 AM   #268
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,211
QuoteOriginally posted by Mistral75 Quote
Indeed, its name is DA645 28-45mm, my mistake. Otherwise, we say the same thing.
Absolutely, I meant, it was (IMO) useless to discuss this right from the beginning (not targeted at you, you did not start this).
09-24-2016, 02:23 AM   #269
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,000
I don't agree : who knows the exact image circle of DA 645 28-45mm ? It could (schrewdly) be covering 40x54mm, whilst not covering 120/220 DFA / film sensor size.... hence not limited to 33x44mm sensor size...
09-24-2016, 02:39 AM - 1 Like   #270
Senior Member




Join Date: Dec 2015
Posts: 172
Original Poster
QuoteOriginally posted by Zygonyx Quote
I don't agree : who knows the exact image circle of DA 645 28-45mm ? It could (schrewdly) be covering 40x54mm, whilst not covering 120/220 DFA / film sensor size.... hence not limited to 33x44mm sensor size...
The patent show is only cover 33*44
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
adapter, aps-c, bunch, camera, comment, company, doubt, evf, fa, ff, ff and apsc, flange, fuji, k1, lens, lenses, line, mirrorless, money, nx, pentax, pentax news, pentax rumors, ricoh, rumors, samsung, sensor, sensors
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Day New Rumor FF Slide (no rice) D1N0 Pentax News and Rumors 129 10-18-2015 06:15 AM
Rumor: Pentax FF new Limited lenses coming soon? Stavri Pentax News and Rumors 253 09-27-2015 10:40 AM
Top 5 lens pick for a Pentax APSC and FF shooter AtitG Pentax SLR Lens Discussion 36 03-02-2015 12:20 PM
Pentax FF Mirrorless Rumor Winder Pentax Full Frame 37 05-04-2013 11:01 PM
After Nikon D600 rumor, Canon entry level FF camera rumor ... LFLee Non-Pentax Cameras: Canon, Nikon, etc. 17 05-16-2012 08:41 PM



All times are GMT -7. The time now is 10:14 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top