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<blockquote data-quote="jim.londos" data-source="post: 138442" data-attributes="member: 13790">Hi folks,I am not too sure if I can put it down correctly, but I will try:My D5100 + AF-S 35mm/1.8, when in P mode and with the flash activated, indoors with moderate light, uses a strange mix of settings (Auto ISO, 3200 maximum and minimum speed at 1/125 selected in the menu settings).Results: an aperture around f6.3-f7.1, a speed of 1/125 and ISO 3200, all this leading to underexposure, indicated by the camera itself, before shooting.The strange things are:1. The lens can perform brighter than that (up to f1.8), still the camera chooses a smaller aperture (f6.3-7.1) and with the above settings, the image is underexposed.2. I tested other Nikon cameras (e.g. D5200, D3000, even another D5100 body) and they show the same behavior.3. I tested the Nikon D90 and it DOESN'T show this behaviour. Meaning, that it will choose a wider aperture setting, so that the picture doesn't get underexposed AND the sensitivity drops to more reasonable ISO values.4. I brought my D5100 to Nikon, where the testing machine found the camera within Nikon's specs.So, any smart ideas why this is happening? Is this a bug or a feature?</blockquote>

[QUOTE="jim.londos, post: 138442, member: 13790"] Hi folks, I am not too sure if I can put it down correctly, but I will try: My D5100 + AF-S 35mm/1.8, when in P mode and with the flash activated, indoors with moderate light, uses a strange mix of settings (Auto ISO, 3200 maximum and minimum speed at 1/125 selected in the menu settings). Results: an aperture around f6.3-f7.1, a speed of 1/125 and ISO 3200, all this leading to [B]underexposure[/B], indicated by the camera itself, before shooting. The strange things are: 1. The lens can perform brighter than that (up to f1.8), still the camera chooses a smaller aperture (f6.3-7.1) and with the above settings, the image is underexposed. 2. I tested other Nikon cameras (e.g. D5200, D3000, even another D5100 body) and they show the same behavior. 3. I tested the Nikon D90 and it [B]DOESN'T[/B] show this behaviour. Meaning, that it will choose a wider aperture setting, so that the picture doesn't get underexposed AND the sensitivity drops to more reasonable ISO values. 4. I brought my D5100 to Nikon, where the testing machine found the camera within Nikon's specs. So, any smart ideas why this is happening? Is this a bug or a feature? [/QUOTE]

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