Or just how much detail do you want to see or show? Or perhaps, you want to test how much your system can resolve?
Link to larger file -> K20D-Techpan-ISO12233 Reschart
I am sure most of you already have an idea that every film type have different resolutions. I have tested a few and I can confirm that.
As pointed out earlier, we may be able to pick the film but we cannot always control the scene, camera settings and conditions which can result in less then ideal resolution.
- In the test results below, I used a X wide by 4 high arrangement of ISO12233 res charts shown in the bottom left. I then cropped and provided 100% of the center portions using very low compression. All results are therefore multiplied by 4.
- Second image up is the crop from my 14.6MP K20D + manual focus Pentax M 50mm F4 macro lens + Pentax auto bellows from the full frame shot of 35mm Kodak Techpan shot at ISO 25 and processed in Technidol.
- Third image up is the crop from my 14.6MP K20D + manual focus Pentax M 50mm F4 macro lens shot of the 4 X 4 chart arrangement. It is pretty much the same as DPREVIEW K20D resolution results of about 2400LPH. Testing of all my Pentax lenses maxes out the K20D's sensor.
- Fourth image up is the Coolscan 9000 scan of the center portion of the shot made on 35mm Kodak Techpan shot at ISO 25 and processed in Technidol using the Pentax LX + the same Pentax M 50mm F4 macro lens. As you can see, it clearly resolves much more than the 14.6MP K20D sensor. However there are two different resolutions - Vertical of 4000LPH and Horizontal of 3200LPH. For comparison, a 24.6MP Sony A900 is rated at 3700LPH.
- The image on the right is a 4.5 optical magnification of the center portion of the full frame shot of 35mm Kodak Techpan shot at ISO 25 and processed in Technidol using my K20D and Pentax autobellows. This is 12.5 X 4 = 5000LPH. By comparison, the 36.3MP Nikon D800 tops the reschart at 3800LPH. The unfiltered D800E surpasses the 4000LPH chart used so we can't say where it reaches.
I am sure most of you already have an idea that every film type have different resolutions. I have tested a few and I can confirm that.
As pointed out earlier, we may be able to pick the film but we cannot always control the scene, camera settings and conditions which can result in less then ideal resolution.
