This is from inside a pub (Wirtshaus) with dull daylight coming in through the windows. The ISO is set to ISO 3200 and the exposure time was 1/30 sec. The dimensions have been halved. Naturally, the image looks grainy, but even at this high ISO speed, the details are quite crisp and the colours are well rendered. There is good detail for the writing on the beer mat. This is a fairly wide angle so the f-stop of the lens might be worse than its competitors but it is doing a good job in the circumstances and hopefully showing you that at ISO 3200 for a reduced size photo, the grain might be acceptable if you really wanted that indoors photo. Certainly, it beats ISO 800 colour film in a 35mm film camera, if we care to remember back that far.