Guy Mancuso
Administrator, Instructor
I think I want the 9 micron sensor
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Yes - the Aptus 65S is at 7.2, the P30, P21 and H3DII-31 are at 6.8. Leaf does still offer 22MP solutions at 9 microns - Valeo 22, Aptus 22, Aptus 54S.right, i am sorry. it has 7.2 micron pixels, large enough to get away without microlenses. 22-megapixel backs (not leaf), however, have 9-micron cells.
I hear what's you're saying. MFDB's need better high ISO performance than 35mm DSLRs due to having slower lenses, in general, or at least the fact that they need to use smaller apertures to achieve the same DOF. This is the one thing I would really like to see being improved in the next generation of MFDBs.The one thing i really need is good noise or very little at ISO 400. This part makes me lean to the P30. i am trying to avoid buying a whole Profoto system just to pick up a stop or two . If i can squeeze a great file at 400 than i think i will be just fine
no need for profoto, just get contax 645, or rollei with 2/80The one thing i really need is good noise or very little at ISO 400. This part makes me lean to the P30. i am trying to avoid buying a whole Profoto system just to pick up a stop or two . If i can squeeze a great file at 400 than i think i will be just fine
You don't always want such narrow DOFno need for profoto, just get contax 645, or rollei with 2/80
Victor, there is no such thing as telephoto advantage. You may as well just crop an image from a larger sensor for an identical resultthe P25 is 9 micron, but the advantage of lower noise may not translate completely, since those were older backs. The lowest noise I believe is in the P30 or P30+
also with the crop, the P30 has a telephoto advantage, that is, since MF is generally more WA than 35mm for same FL, the crop actually put more pixels out at a distance. It is all depending on what you want.
Victor
Good advice -Victor, there is no such thing as telephoto advantage. You may as well just crop an image from a larger sensor for an identical result
To me the main concern is not in noise, but with narrower dynamic range and consequent inability to capture strong and especially specular highlights.
I said, - "try overexposing a stop and then pull 1EV, just like with negative colour film". First Marc did not believe me. That until he tried
No need Tom that looks very very clean. ImpressedGuy, I have the full file of this cropped and lightly processed pic, P30+. ISO 400. If you would like it and can tell me how to do so, I will allow you to download the full file.
Concur - after much trial and effort and $$ on DSLR side, have finally come to conclusion that, for me, the best IQ comes from a reasonable number of big fat (ideally in and around 9um) photocells.I think I want the 9 micron sensor
Victor, there is no such thing as telephoto advantage. You may as well just crop an image from a larger sensor for an identical result
oh, i see. theoretically you are right, but in reality 22mp sensors are larger than 31mp sensors in physical dimensions, not the other way around. i wish 22mp square sensor with 1.3 crop were available...Well, maybe you misunderstood my point, but there is a definite advantage when a sensor with the SAME pixel count is used as crop or FF sensor. It's WHERE you put you pixels. ( and one should ALWAYS be careful where they put their pixels :ROTFL: )
With a crop factor 22MP sensor (say 1.3) a 180 lens could be effectively a 22MP 250mm lens (as long as the glass resolution holds out ).
If you crop a 22MP sensor that is FF then you will only have say 16 MP to work with in the center area that you indirectly 'blow up' to the 250mm FOV.
That's all I meant
regards
Victor
I believe Canon has used this technique in their latest dslr sensors. They put more and larger pixels in the same area by decreasing the space between pixels.Guys, just don't forget that pixel spacing is not the whole story. 9 micron spacing might mean that the photosites are 5 microns wide with a 4 micron gap until the next photosite. Therefore it would be possible for a new sensor to have smaller spacing, e.g. 7 micron, and have photosites which are 6 microns wide. That means more pixels AND larger photosites. I believe this surface efficiency is called 'fill factor'.
Very true. Comes down to whether you talking/quoting cell SIZE vs PITCH, more often than not the two terms get used interchangeably , which as you point out can be misleading.Guys, just don't forget that pixel spacing is not the whole story. 9 micron spacing might mean that the photosites are 5 microns wide with a 4 micron gap until the next photosite. Therefore it would be possible for a new sensor to have smaller spacing, e.g. 7 micron, and have photosites which are 6 microns wide. That means more pixels AND larger photosites. I believe this surface efficiency is called 'fill factor'.