Nikon P5000
I just purchased the P5000 as my first digital camera. I consider myself a prosumer and have a Nikon F3HP and a FM2. I selected the P5000 based on it's specs. With regard to the camera's performance, I am disappointed. The camera is advertised as a 10 MP, but in fact the camera will only store images as JPEGS and then only as 2.5 MP files. There is no way that I have found to fully use the 10 MP sensor.

(This assumes two way communication between the camera and the download software.) I have a 2 GB card, and I understand that larger capacity cards are or soon will be available. So the ability to store and use larger files should be a no brainer. It makes no sense to me to advertise the camera as 10 MP when the camera delivers only 2.5 MP...

Comments (6)

You are obviously challenged with your understanding of resolution / compression / and image size. P5000 delivers JPG images at 3 compression levels - you're set at fine with 4 to 1 leaving you the jpg size of 2.5MP Open the file and look at attributes - you will see the full size listed at 10MP..

Comment #1

I have prosumer level film Nikons, and in my history I made more than pocket change using them. So I believe that qualifies me as a prosumer, although photography is no longer my prime hobby. I indicated that I do not have digital experience, as I indicated that this camera purchase was to become familiar with digital.

I know that the minimum compression of 4:1 is what I am using with the camera's "fine" setting. So I guess the question is...if the "full size" is listed as 10 MP, how can I access this uncompressed file in order to use it? (If each image is compressed and saved at about 2.5 MP, can you tell me how that differs from the image saved by a camera advertised as 2-5 or 3 MP?) I actually read the instruction book and also took test images for exposure, depth of field, white balance, etc etc. The book makes no mention re how to access and use a 10 MP file, and does not indicate any setting above "fine"...

Comment #2

Tom, I think you're confusing MP (megapixels) with MB (megabytes). I am sure if you open your images in an editor and look at the number of pixels reported, it will be ~10MP (3648 x 2736 pixels), unless you've selected a lower resolution. An uncompressed 24-bit color 10MP image file would be 10MP x 3 bytes per pixel = ~30MB! This gets compressed down to about a 2-6MB JPEG file, mostly by throwing away redundant information, especially tiny differences in color that are imperceptible to the human eye. JPEG file size will vary, depending on scene complexity, and compression ratio (fine, normal, basic). The P5000, like most cameras in it's class, has no uncompressed mode (TIFF or RAW). The 4:1 minimum compression when the fine setting is used is actually quite good. I doubt *anyone* would be able to see the difference when compared to uncompressed at *any* print size, especially from these small sensors, which are inherently more noisy than a DSLR sensor, where uncompressed modes are ubiquitous...

Comment #3

I guess that the bottom line is that I thought that there would be no compression with this camera, given it's published range of capabilities and it's 10 MP sensor. I have several "Kodak Photo CD's" that consist of scanned images that were scanned in the early 1990's, ages ago by digital standards. Each RAW image is 2048x3072, and has a file size of 18.4 MB. I have worked these in Photoshop and that size is great for the purpose.

I was hopeful that I could extend the use of the P5000 to also include action shots, but the shutter lag is severe and any cropping of the compressed image degrades overall sharpness, since any in camera cropping changes the setting from "fine" to "normal" as a default. Even a 1:2 compression would be better than the 1:4 that the camera has now. It's too bad that the software does not permit a save and open of the uncompressed file....RAW,if possible.

So, despite it's range of settings, it is just a point and shoot, and an expensive one at that. My opinion.........

Comment #4

The bottom line is that is obvious that it is the first time you have used a digital camera, you shold invest in one of those Digital Cameras for Dummy's Book's, or take a look at this website guides.

Dont blame the camera, blame the user

Comment #5

Your Kodak Photo CD "RAW" images sound like 24-bit TIFF files. 2048 x 3072 = 6.3MP. 6.3MP x 24-bits/pixel = 18.4MB. RAW files are smaller, as they don't contain color information. That's interpolated by the RAW converter software. RAW files from my 6MP Nikon DSLR are ~5MB, but they have some compression applied too.

Then compare the images and file sizes. Feel free to post some crops showing the loss in resolution. I doubt you will find any. Sounds like what you want is a DSLR. It'll give you low shutter lag, true RAW format, and a decent burst cycle time even in RAW mode.

And, you may need to do some noise reduction on them as well, as these small, high resolution sensors are inherently noisy, especially above ISO 200. I shoot RAW mode with my DSLR, but not because of resolution (there really is very little lost in compression at the fine setting). I shoot RAW mainly because it lets me adjust white-balance and tweak exposure easily, and it lets me decide how much sharpening to apply...

Comment #6

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This question was taken from a support group/message board and re-posted here so others can learn from it.


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