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02-08-2015, 07:30 PM   #436
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This relates to an area guaranteed to cause virtual fist-fights over terminology ... so if someone here disagrees with my wording, please don't take it out on me, a mere messenger.

If you mount a 100mm lens on a "crop sensor" APS-C camera, like a K-3, the view you have, either thru the viewfinder or on the resulting picture, is the same as you would get with a 150mm lens on a 35mm or full frame sensor camera, so people will sometimes talk about that being a "150mm 35mm equivalence", in other words, you multiply the actual value by 1.5. So Adorama is providing those numbers for someone who would buy the lens now, before the full frame camera is available, and use it on a K-3 or similar camera.

02-09-2015, 01:49 AM - 1 Like   #437
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Did you all see konraDarnok's FF image:



Very cool!

Source: https://www.pentaxforums.com/forums/169-pentax-full-frame/287872-now-lets-tal...ml#post3150854
02-09-2015, 03:28 AM   #438
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Vanilla TTL (whether with analog or digital protocols i.e. SuperA era or Z/MZ era) needed another sensor just for that purpose.
In Pentax case it was a very simple CW mesure type.
Ditching a sensor, allowing more features and reusing the normal metering sensor (which means flash is better too each time you update the usual sensor) means all OEMs ditched it pretty quickly.

The only digital slr cameras compatible with vanilla TTL are the ist-D (including the embedded flash) and istDS/DS2 (but NOT the embedded one).
All other digital SLRs are PTTL only (but AFAIK still understand analog/digital signaling from earlier flashes so they commit to XSync etc automatically, ready led in the VF...)
02-09-2015, 03:35 AM   #439
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QuoteOriginally posted by thibs Quote
Vanilla TTL (whether with analog or digital protocols i.e. SuperA era or Z/MZ era) needed another sensor just for that purpose.
In Pentax case it was a very simple CW mesure type.
Ditching a sensor, allowing more features and reusing the normal metering sensor (which means flash is better too each time you update the usual sensor) means all OEMs ditched it pretty quickly.

The only digital slr cameras compatible with vanilla TTL are the ist-D (including the embedded flash) and istDS/DS2 (but NOT the embedded one).
All other digital SLRs are PTTL only (but AFAIK still understand analog/digital signaling from earlier flashes so they commit to XSync etc automatically, ready led in the VF...)
Thanks for the explanation, Thibs!

Did TTL tend to overexpose when the ambient light was high and shutter speed low?

02-09-2015, 03:43 AM   #440
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QuoteOriginally posted by clackers Quote
Thanks for the explanation, Thibs!

Did TTL tend to overexpose when the ambient light was high?
Either over or under, depending on, the specific case, I believe.
My own experience was overexposure, indeed.
Also, there was no High Speed mode and no pre-flash meant: Fill-in was hard if not impossible.
Which is why auto computer mode was (and still is) very useful: trick the aperture and bingo

Bread and butter was and still is: Metz Flash (Pentax compatible either with SCA or dedicated) with auto mode: use the flash sensor BUT get all exposure parameters from the camera:
* ISO
* aperture
* focal length
Nothing to dial
02-09-2015, 02:35 PM   #441
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flash seems like just too much complication if you're not working with a leaf shutter
02-09-2015, 03:13 PM   #442
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QuoteOriginally posted by clackers Quote
Well, I am still puzzled, Blue. In such a controlled environment (this is extreme macro, not a birthday party, right?) , isn't manual flash much more controllable?
Actually, no. Its not a "controlled environment" so to speak. Its more of a microcosm. Cameras have a lot of features that many people don't use. TTL wouldn't ad anything to the cost of the firmware. TTL allows for fully automated flash photography with any lens, extension tubes and bellows.There are a lot of people that like using there Takumar lenses for example.



Last edited by Blue; 02-09-2015 at 03:20 PM.
02-09-2015, 03:39 PM   #443
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TTL flash would definitely add to the cost of the firmware, hardware (dedicated sensor needed) and testing to make it work (which failed in the previous attempt)

02-09-2015, 03:49 PM   #444
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QuoteOriginally posted by Kunzite Quote
TTL flash would definitely add to the cost of the firmware, hardware (dedicated sensor needed) and testing to make it work (which failed in the previous attempt)
I would not be so categoric as calling previous attempts "failed".
It worked for a lot of people.
Well, in 95% of the case, automatic works at well or better and cost almost nothing so it is clear why they removed support. Still, in such case as macro works: it sucks
02-09-2015, 03:54 PM   #445
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I remember many people complained about it consistently failing. Not that P-TTL was much better...
02-10-2015, 02:32 AM   #446
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QuoteOriginally posted by Tesla Quote
Looking good! Can anyone with mad Photoshop skills add the hammertone finish and rubber grip texture?
02-12-2015, 12:02 AM   #447
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A picture of the 24x36 Pentax camera mock-up taken at CP+ and posted by Digital Camera Watch:

htttp://dc.watch.impress.co.jp/docs/news/20150212_687872.html

02-12-2015, 12:28 AM   #448
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QuoteOriginally posted by Mistral75 Quote
A picture of the 24x36 Pentax camera mock-up taken at CP+ and posted by Digital Camera Watch:

htttp://dc.watch.impress.co.jp/docs/news/20150212_687872.html
And in the other thread, we can see the back too and its huuuuge screen. : )
02-23-2015, 08:49 AM   #449
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I don't know if this has already been posted: Ricoh Shows Lump of Plastic, Pentaxicans Overjoyed. | New Camera News

It's quite hilarious, but sadly true.
02-23-2015, 09:00 AM   #450
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QuoteOriginally posted by Clavius Quote
I don't know if this has already been posted: Ricoh Shows Lump of Plastic, Pentaxicans Overjoyed. | New Camera News

It's quite hilarious, but sadly true.
one lump of plastic to rule them all.
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