Fringing - CCD or lens technique?

So, i'm loving the plastic 35mm. Just amazing when you get the focus right. Thanks for all the advice everyone gave me

I bought this for low light situations but using it almost exclusively at the moment. As I still find the need for flash, I having been thinking of upgrading to KR, although a member here mentioned that the CCD can produce nicer results than the CMOS sensors. That seems to have open my eyes t whole debates over the web!

Anyway, I was gonna post these images and ask about the fringing you see across the rocks. Obviously something to do with the contrast between the rock and the whitewater. Is this sort of thing seen more with CCD than CMOS sensors?


@f2.4



@f8

Seems to make no difference changing the aperture, but swapping to the 18-55 kit lens reduces the fringing a lot but still just about visible.
Is it an effect of a sharp lens, and is this just a situation I should avoid?

Finally are CMOS sensors a little more 'clinical' out of the camera? I only ask as a friend has one of the entry level Canons and I really do not find the images at all exciting straight from the box, unlike my KM.

Thanks!

Complex issues, but the fringing is a combination of lens and sensor effects. Changing lenses will change the severity of the fault, and sometimes it can be virtually eliminated.

I wouldn't worry too much about differences between CCD and CMOS sensors - in any event later CMOS cameras produce better results.

I have found similarly that the plastic 35mm is a great lens, but I have also found that you can get purple fringing with high contrast areas. It is a lens issue I think rather than a sensor one. The junction between the edge of the rocks and the light sea behind is just such a high contrast area with PF potential. I would suggest zooming right in and seeing if the slight fringe is magenta or cyan (or similar) in colour. It can be easily removed in PSE by selecting that specific tone of magenta/cyan (use the 'dropper' to select a specific pixel) and then winding the saturation of that colour right down. As long as the pic doesn't have too many pixels those colours elsewhere then this makes for an easy fix...

Hope that helps?

Great photo's,
looks hazy....
i wouldn't worry to much...

Thanks Mat, I will give that a go in GIMP

RE noise I will see if I can shift my KM, but failing that I will have to get better a processing when using ISO800.

What ever I shoot with, taking pictures of the boy is just joy

I think you were referring to me Greg regarding CCD and CMOS! I can see a very distinct difference between pics taken with a CCD (K-m) and CMOS (K-x) sensor. Which is best depends on subjective opinion and the type of photo being taken. To my eyes, the CCD sensor is lovely for landscapes and gives a 'warmer' feeling than the CMOS sensor. The CMOS (K-x) is streets ahead when it comes to low light and high ISO pictures. I've taken some pics of Goldfinches at 1250 ISO with hardly a hint of noise; on the K-m these would be very noisy. I could not recommend one over the other but I suspect others on here will have strong opinions, especially those with the K10D which I understand has a CCD sensor and produces beautiful images.

Regards
David

CCD. CMOS. A comparison. link

Best regards

Very interesting technical comparison between CCD and CMOS which seems to imply that getting high quality images from CMOS is more difficult than with CCD. To my eyes, in Pentax cameras the CCD images are slightly superior, assuming that ISO is kept at a reasonable level. For high ISO the CMOS images (newer sensors?) are much better.

Hope we haven't started a major disagreement here but I suspect others will weigh in with their views! I sit on the fence because I have both CCD and CMOS sensor cameras and love them both!

Regards
David

I think it was Mike-P who described the difference as CCD looks like gloss and CMOS matt??

Kinda weird but it does intrigue, particularly as one looks for excuses to change up from the GX10/K10D.

OMG we've started something now!! I never even thought about it until I used my son's K-m (which is now mine as he has a K-x), but since seeing the images it produces I think CCD still has the edge, even if the pixel resolution is lower. 'Gloss' and 'Matt' sums it up nicely.

Regards
David