All Forum Comments
Comment by Lubbyman posted on Take Your PIck at 29/06/2020 - 22:06
3 to 5 obviously opportunist shots
Steve
Comment by Lubbyman posted on An unexpected bonus! at 29/06/2020 - 20:33
I must admit that user manual isn't as clear as it should be re User 1, 2 and 3. The seem a bit of an afterthough by Pentax, extra functionality but not as well integrated as they could be.
I no longer use quick dial myself, shoot DNG and do everything in post processing seems easier and safer. But then I've never been tempted by fancy things like the toy camera look.
Good luck!
Steve
Comment by Lubbyman posted on Is my Q faulty ? Mode Dial help needed. at 29/06/2020 - 20:26
Steve
Comment by Lubbyman posted on Is my Q faulty ? Mode Dial help needed. at 29/06/2020 - 17:38
Steve
Comment by Lubbyman posted on Is my Q faulty ? Mode Dial help needed. at 29/06/2020 - 16:41
Steve
Comment by Lubbyman posted on An unexpected bonus! at 29/06/2020 - 11:33
Steve
Comment by Lubbyman posted on K3ii NOISE at 28/06/2020 - 10:59
And PP's readership? Bauer Media says:
On average aged 48 years old.
Are mostly male (With a 86% - 14% split).
Earn an average 34k per annum.
Combined, they spent £188 million on gear in the last year.
The average reader has had an interest in traditional photography for 18yrs, and Interested in digital photography for 4 years.
Anyone admit to being the average reader? Including spending £5K (15% of income) per year on gear?
Aren't numbers interesting!
Steve
Comment by Lubbyman posted on Practical Photography. at 28/06/2020 - 10:56
To help clarify further the effect of noise and noise reduction, do you have image 2 (at 1/400sec) but with the +4 stops added in camera (ISO 3200) for comparison?
Here is the base image. Noise much as in yesterday's base (allowing for overall brighter image).

Now underexposed by 4 stops with 4 stops added in post processing to bring the average brightnesss up to base level. Noise much as in yesterday's equivalent (allowing for overall brighter image).

Now increasing the in-camera sensitivity from ISO200 to ISO3200 to compensate for the reduced exposure time. And the result is (wait for it ... hushed expectancy ... big drum roll ...)

Yes, allowing for slight change in overall brightness due to slight change in light between shots, noise is essentially the same as when compensating for exposure in post processing. And that's as it should be, if my understanding of RAW and ISO is correct. Changing ISO doesn't change the output from the sensor so the ratio of noise to signal (light level) is unchanged. Increasing ISO affects downstream processing by amplifying the combination of noise and signal from the sensor, so the result should be the same whether done in camera or on computer. In fact, I'm not sure whether changing ISO actually changes RAW data or whether ISA is merely a number in the RAW file that is then used by post processing software to get the intended brightness. If the latter, it would be equivalent to me telling the software to increase exposure by 4 stops. Either way, the noise looks the same whether ISO is changed in camera or exposure is changed in post processing. Of course, this only applies if using RAW files, jpegs straight from camera will have lots of processing done already, including accounting for ISO.
As the saying goes, a picture is worth a thousand words.
Steve
Comment by Lubbyman posted on K3ii NOISE at 27/06/2020 - 21:35
Steve
Comment by Lubbyman posted on Unhinged at Low Hauxley at 27/06/2020 - 13:53


Steve