All Forum Comments
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 22:50
iceblinker wrote:
The K-7 only sucks at ISO 800+ when pixel peeping or when blowing up large.
The K7 and K10 are both APS C so I'm lost on this one.bretti_kivi wrote:
in the K7 over the K10D and when you compare like for like, the K7 simply sucks.
To compare the K-7 and K10D like for like, you have to reduce the size of the K-7's image to the K10D's. The K-7 doesn't suck then.in the K7 over the K10D and when you compare like for like, the K7 simply sucks.
The K-7 only sucks at ISO 800+ when pixel peeping or when blowing up large.
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 22:38
How many APS C lenses were available for the istD when it launched? I can't remeber.
No problem with Pentax staying with APS C, just need low noise, hi ISO, 300 and 400mm f/2.8 and a new 600mm f/4. At least match the competitions offering of glass.
I wonder what the market size is for the 645D? How many existing DMF users will switch? If they intend to attract new users, will similar issues be raised as with the SLR's?
Regards
No problem with Pentax staying with APS C, just need low noise, hi ISO, 300 and 400mm f/2.8 and a new 600mm f/4. At least match the competitions offering of glass.
I wonder what the market size is for the 645D? How many existing DMF users will switch? If they intend to attract new users, will similar issues be raised as with the SLR's?
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 22:36
iceblinker wrote:
Sorry, I don't understand your points, K10D.
I don't believe there is much (if any) advantage in a FF sensor over APS-C if you are going to crop it by a factor of 1.5 to blow up your pictures to make up for not having a longer lens.
Surely to take FULL advantage of FF, you need longer lenses?
Or are people prepared to have no/minimal advantage for telephoto (by not using longer lenses) in order to have an advantage for standard and wide angle?
I don't advocate cropping in with FF unless there is a reason or you want the image to look like APS C. My Nikon FF does both formats.Sorry, I don't understand your points, K10D.
I don't believe there is much (if any) advantage in a FF sensor over APS-C if you are going to crop it by a factor of 1.5 to blow up your pictures to make up for not having a longer lens.
Surely to take FULL advantage of FF, you need longer lenses?
Or are people prepared to have no/minimal advantage for telephoto (by not using longer lenses) in order to have an advantage for standard and wide angle?
I do use longer lenses rather than crop in. A Bigma 50-500 and 500, 650 and 1100 reflexs.
I'm not clear of your statement on the last paragraph.
I do shoot APS C and FF, the FF is very, very low noise with very good IQ, its a D700. Had Pentax brought out a FF last year, I would have bought that. Just as many others would have done or indeed may do, if a FF is released.
True native image magnification is the result of longer glass regardless of sensor size. A target in the image is the same size on either sensor but the FF sees more FOV so that can't be a bad thing?
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 21:12
Tried one and gave up. As John said, bulky and I also found it uncomfortable.
Regards
Regards
Comment by K10D posted on photo vest recommendations? at 23/01/2010 - 20:51
iceblinker wrote:
K10D, why do you think longer lenses are usually used with medium format than APS-C to get the same FOV?
We were not talking FOV but FL, and hence magnification.K10D, why do you think longer lenses are usually used with medium format than APS-C to get the same FOV?
This could go on for ever about FF, but let's remember the Canon 5D that set the standards so high so long ago and it uses FF glass from silly wide to extreme telephoto and speciality lenses.
Image quality and low noise are its benchmarks, very impressive stuff and that's from me, that does not like Canon.
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 20:39
iceblinker wrote:
The difficult question is do they still have an advantage when cropping the image to get the field of view as you get with a smaller format.
Yes it depends on the density and quality of the sensors, but let's compare like for like in terms of what's available for each format at the moment and in the near future.
Johns point is valid. Generally lower noise. Low pixel density, to date has been the way to achieve low noise. However, with the rapid growth in noise control, the smaller sensors are getting up their with higher res and low noise.K10D wrote:
Focal length does not change.
Yes I know, but the field of view is different when it's focussed on a different sensor format.Focal length does not change.
Quote:
If larger sensors are not an advantage I would ask why are Pentax launching a medium format digital?
Larger sensors clearly have an advantage when used with longer focal lengths to get the same field of view. That's the easy bit.If larger sensors are not an advantage I would ask why are Pentax launching a medium format digital?
The difficult question is do they still have an advantage when cropping the image to get the field of view as you get with a smaller format.
Yes it depends on the density and quality of the sensors, but let's compare like for like in terms of what's available for each format at the moment and in the near future.
As for the focal length on formats, the object image within the FOV is the same size on the sensor. Yes, you can crop into a FF image and enlarge, that is already done on the APS C sensor.
The DOF is generally more for the same FF lens when fitted to an APS C body, sometimes that can be an issue.
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 20:30
iceblinker wrote:
Ok, I don't HAVE to use a 450mm lens instead of a 300mm, but there's no advantage to FF if I'm going to crop every shot to APS-C. So therefore I will need longer lenses to take advantage of it for the same telephoto effect.
Focal length does not change. As per this link linkOk, I don't HAVE to use a 450mm lens instead of a 300mm, but there's no advantage to FF if I'm going to crop every shot to APS-C. So therefore I will need longer lenses to take advantage of it for the same telephoto effect.
I wonder how many 35mm film users ditched their cameras for APS format?
If larger sensors are not an advantage I would ask why are Pentax launching a medium format digital?
I use digital FF so my 14-24 is just that and not a 21-36 equiv. I don't own the Pentax 31mm but would buy it if Pentax release a FF DSLR.
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 20:07
iceblinker wrote:
Personally, I would find FF interesting, except I wouldn't be keen on having to use a 450mm lens instead of a 300mm!
So by using a Pentax 300mm f/4 lens on a cropped sensor, it's effective magnification is 9 and by seeing more of its image circle as with FF it's magnification reverts to 6? I always thought only the field of view changed? petemasty wrote:
does anyone have any more information regarding this.
No-one outside of Pentax has any info, and no-one inside Pentax is saying anything. So whatever you read was purely speculation.does anyone have any more information regarding this.
Personally, I would find FF interesting, except I wouldn't be keen on having to use a 450mm lens instead of a 300mm!
So it can be said then that we can change the fixed focal length by seeing less or more of the available image circle.
It would be nice to be able to use the 31mm ltd as a 31mm, just a thought.
Regards
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 19:47
Comment by K10D posted on Full Frame Pentax!!!!!!! at 23/01/2010 - 16:39
Regards