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Author Topic: Will Pentax go for Full Frame DSLR?  (Read 5438 times)
dch
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« on: January 05, 2007, 04:05:09 PM »

I am wondering, will Pentax go for Full Frame DSLR? Currently, Canon and Nikon have such model on the market.
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KhoKing
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« Reply #1 on: January 05, 2007, 04:32:37 PM »

I don't think this will happen in the near future...not within 2007 for "sure"... Grin

Pentax is quite keen in producing DA lenses now...so I think they will stick to APS-C sensor for a long. I don't really want a FF sensor, but more keen in having a solid metal built DSLR with great image quality at high ISO (envy Canon EOS 5D photo quality).
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faber
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« Reply #2 on: January 05, 2007, 04:36:22 PM »

I am wondering, will Pentax go for Full Frame DSLR? Currently, Canon and Nikon have such model on the market.

Nikon? Which model?

Anyway, I've tried a DA lens on my KX and it does not show vignetting above 21mm. it means that the FF is covered also with the DA lenses. Could be interesting to know which is the covering circle on the DAs. Because they will can be probably used also on a FF sensor. At least with an applied crop on the FF sensor.

Bye!
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tcom
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« Reply #3 on: January 05, 2007, 04:52:50 PM »

With SR, the APS-C sensor moves quite a bit inside the body. Would the DA lenses just fit the APS-C image circle, in body SR would not be possible. The DA lenses have to cover more.

So a full frame DSLR with SR would need a whole new bunch of lenses, the FA lenses will probably not cover enough.

I think Pentax developped too many DA lenses now to switch soon to FF. My guess is that Pentax will stay for quite a while with the APS-C sensor for amateur and semi-pro DSLRs and will have the MF for the pros.
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faber
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« Reply #4 on: January 05, 2007, 04:59:47 PM »

Just wondering... maybe Pentax can use the 645 lens for FF ?

Smiley
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KhoKing
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« Reply #5 on: January 05, 2007, 09:35:41 PM »

Nikon? Which model?

Anyway, I've tried a DA lens on my KX and it does not show vignetting above 21mm. it means that the FF is covered also with the DA lenses. Could be interesting to know which is the covering circle on the DAs. Because they will can be probably used also on a FF sensor. At least with an applied crop on the FF sensor.

Bye!

I think Nikon user has the option of Kodak 14N...though a failure camera that has made Kodak closed their DSLR market Tongue

Nikon users are everyday dreaming for a FF Nikon DSLR...I believe Nikon will come out with one in 2008 Smiley
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Huato
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« Reply #6 on: January 06, 2007, 01:36:54 AM »

Why go for FF?

Since Pentax lens like 10-17mm on Pentax DSLR can cover 180 degree (on spec) while 10-22mm from Canon only got 107 degree... , correct me if I'm wrong.  Wink
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KhoKing
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« Reply #7 on: January 06, 2007, 01:53:06 AM »

Huato,

The 10-17mm lens from Pentax is a fisheye lens...the Canon 10-22mm isn't Smiley
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Huato
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« Reply #8 on: January 06, 2007, 02:20:38 AM »

The 10-17mm lens from Pentax is a fisheye lens...the Canon 10-22mm isn't Smiley
OIC... So what is Canon's fisheye? How come Pentax can achieve fisheye on 10-17, why Canon can't?
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Joshua Hakin
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« Reply #9 on: January 06, 2007, 05:09:05 AM »

I was wondering, some people say they want a FF because they can use all their wide angle lenses and wont have to invest in new DA lenses.
How good do you think the current "film" lenses would look on a FF sensor? I've heard that the 5D really shows the flaws in cheaper lenses and you need to use top quality lenses on it.
I wonder if we'd have to buy all new lenses anyway just get the best quality out of a FF body. Huh
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KhoKing
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« Reply #10 on: January 07, 2007, 01:54:52 AM »

OIC... So what is Canon's fisheye? How come Pentax can achieve fisheye on 10-17, why Canon can't?
Pentax 10-17mm fisheye zoom lens is the first in the world! There is no zoom fisheye before.

I am not so sure about Canon system, but Nikon does has a 10.5mm fisheye which is very nice as well Smiley
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KhoKing
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« Reply #11 on: January 07, 2007, 01:55:58 AM »

I was wondering, some people say they want a FF because they can use all their wide angle lenses and wont have to invest in new DA lenses.
How good do you think the current "film" lenses would look on a FF sensor? I've heard that the 5D really shows the flaws in cheaper lenses and you need to use top quality lenses on it.
I wonder if we'd have to buy all new lenses anyway just get the best quality out of a FF body. Huh

Good point. I remember there was a debate among Nikon and Canon users where Nikon users claimed that their DX lenses at wide angle shows less vignetting and distortion than the Canon full frame lens equivalent Cheesy

With more and more photosites cramped into a sensor, a FF sensor will definitely have more rooms for a larger photosite hence able to give better quality per photosite... Smiley
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KevTeoh
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« Reply #12 on: January 16, 2007, 12:21:38 AM »

OIC... So what is Canon's fisheye? How come Pentax can achieve fisheye on 10-17, why Canon can't?
Pentax 10-17mm fisheye zoom lens is the first in the world! There is no zoom fisheye before.

I am not so sure about Canon system, but Nikon does has a 10.5mm fisheye which is very nice as well Smiley

Actually Pentax had a zoom fisheye previously, The F 17-28/3.5-4.5 Smiley

For Pentax, I suppose the 645D will be the bigger format DSLR above APS-C. There's a lot of mention that the sensor size for that is just slightly bigger than a full frame sensor.
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starkillerz
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« Reply #13 on: January 17, 2007, 12:26:02 PM »

Since Pentax invested so much in the APS-C sized sensor and lenses, they will probably not be coming out with a FF sensor anytime soon.

The advantage of a full frame sensor (besides the lens ratio and the support for the older lenses) is that the small light captors are not as close on the chip than in a APS-C sensor of the same number of megapixel. The fact that the light captors are not as close reduce the noise coming from the other nearby captors. My feeling is that as technology improves the noise issue will reduce more and more making the full frame sensor just able to handle more captors (more megapixel). And as we already know, how much megapixel do we need? Usually 10 MP is great even if you crop pictures.

Also, I might be wrong, but on the factory side I think it is almost easier for the companies to find the factories for chips with very close captors because many chips factories are already calibrated for the very small CPU chips.
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dayalan86
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« Reply #14 on: January 24, 2007, 08:02:41 PM »

If APS-C is small enough of a sensor, just look at Olympus 4/3rd system which utilises a much smaller sensor than the APS-C.

Looking at the way Pentax is going ( supply cant outgrow the demand), I strongly doubt that Pentax will go FF soon.

The 645D is different is a medium format body which will be compatible with the screw mount lenses.
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