"Biggest flaw in D3100's Auto ISO settings."2.0 starson by kgvenky
Pros: 1. soft / cool colored pictures
2. Extra button for single, continues picture
3. Light weight
Cons: Apart from WORST AUTO ISO logic, which is making this camera useless for casual photographers,
1. Live View is OK. Very slow AF
2. Video is just OK, very difficult to use zoom. many time AF is not working, blur / out of focus videos
Summary: I recently purchased Nikon D3100 to replace my Nikon D60.
I did research for more than a month going through all the reviews in the Internet. Generally, review on this Camera is good. I purchased this Camera for its Full HD Video capability, Live View and SD-XC (up to 64 GB) memory card compatibility.
I am not a professional photographer, but have passion to photography, So, I bought this entry level D-SLR camera for better quality image than POINT-AND-SHOOT camera.
I have read lot of books on D-SLR settings like ISO, F-Number, Aperture, Exposure compensation etc, in actual shooting; I end up using AUTO mode.
THE PROBLEM WITH NIKON D3100 (I use with NIKON SB-600 External Flash Unit)
In AUTO mode, Nikon D3100 selects only "AUTO ISO SENSITIVITY"
WITH FLASH UNIT: In indoor shooting; it selects very high ISO Sensitivity (mostly ISO 3200). So the image quality is not good. In the same condition Nikon D60, selects ISO value of 200, whereas, Nikon D3100 selects ISO 3200. I mean, the Nikon D3100 is not considering the Flash Unit and is not adjusting the ISO accordingly.
WITHOUT FLASH IN CLOUDY MORNING TIME: Even in outdoor daylight shooting, Nikon D3100 uses wide variety of ISO sensitivity (100 to 1600) whereas D60 used between ISO 100 to 400, in the same lighting condition. The image quality of the D3100 is not good in AUTO mode and it is only comparable to any POINT-AND-SHOOT camera.
You can check this in dpreview site; in D3100 (in pg 14 of review) photo of the reviewer taken with built-in flash has ISO 3200, whereas for D60 (in pg 21 of review)photo of the reviewer taken with built-in flash has ISO 100. In the review they have not mentioned about this, but for curiosity, I downloaded the images and checked the EXIF information.
Even the reviewer in dpreview.com has not noticed this biggest flaw!!! It's actually a casual shot with built-in flash, the end result is grainy ISO 3200 picture.
Also, try with PASM mode, by setting SOME max ISO value. In flash mode with Auto ISO, it sets this MAX ISO. The only option we have with camera is setting ourselves an ISO value. D3100 selects high ISO values in AUTO ISO setting and the resulting in high grain pictures, which prevents you to use this entry level D-SLR for Casual photography.
I am just back from 15 days vacation, with more than 1500 pictures taken, out of which 90% taken in AUTO mode. only 3 pictures are in ISO 100. All other in ISO 400 to 1100 in daylight, and ISO - 1100 to 3200 in flash mode.
If you are owner of D3100, please check / review your own photos.
Nikon D3100 has biggest flaw in Auto ISO logic, which prevents you to use this entry level D-SLR for Casual photography. Also Live View and Video is not meeting expectations. My D60 is much better than D3100. I am going to sell D3100 and retain my D60. (If Nikon can fix this in firmware, I like to retain D3100, I have written to Nikon, awaiting reply)
If you want to buy an entry level D-SLR Camera to use like POINT-AND-SHOOT, Nikon D3100 is NOT the ONE.
(Nikon D3100 may produce excellent images with Pro Modes like P,S,A & M, but certainly not in AUTO mode)
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