Raetherese wrote:.

I went to a rally last night and I had my ISO on my camera too high.Being a beginner, I am unsure how to rectify this problem and ifthere is any way to salvage these photos..

First ISO affects the digitization of data. That is, it alters the gain of the analog-to-digital conversion. This is a lossy process in so far as data can be lost both at the extremes (clipping at either extreme of brightness, and gradations), and cannot be perfectly reversed..

Highlights that are 'blown' to pure white clipped at the upper end are not recoverable..

Other effects of high ISO such as more noise, particularly in shadows may be somewhat ameliorated, although this will likely come at the cost of detail. And so forth..

Is there a way that I can post one or send to someone to take a lookat and see if there is anyway to fix them?.

See the Rules/Help link. Basically, host-and-post..

Find a image hosting service. There are a LOT of them, and many opinions have already been written on the most prominent ones. Upload image to it. Find the URL of the image *not* the URL of the web page containing the image and cut/paste that into a post. URL must end in .jpg or other blessed extensions, if there are any. Do NOT use tags like [image] or whatever...

There are many Noise reduction programs. Several have free demo-ware so you can try before you buy. They analyze your picture and attempt to remove the digital noise.Two that I know of are Neat Image and Noise Ninja. There are othersWarm regards,DOFThere is no satisfactory substitute for excellenceDr. Arnold O. Beckman..

Have photobucket , post multiple pics all the time.you have to belong/be part of a pic hosting site on the web..

I have IE7, so I simply have the photobucket web site up with my pics open on 1 web page, and the dpreview page I am replying to open on another page. write whatever you wish, go to photobucket(left click once on the pic's url link to make it blue, right click select copy), then on the reply page of dpreview position the blinking cursor where you wish, then right click and select paste, the copied url link will appear. if you want the link to the picture put a semicolon after the url, if you want the actual pic-no semicolon. hit enter, if pc, to move cursor to next line. for any additional pics simply repeat..

Also if iso was set too high the exposure should still have been ok, since it should have caused the shutter speed and/or fstop to compensate for the increased sensativity. then general brightness of the pic should still be ok. if the issue is too much noise from the high iso then you can use a noise reducing software. I use noise ninja and am satisfied; there are severl others available, they all work..

As was stated, try to post a couple of pics. you can then get suggestions as to cause and cure...

Leejay Wu wrote:.

First ISO affects the digitization of data. That is, it alters the gain of the >analog-to-digital conversion..

This is true.

This is a lossy process in so far as data can be lost both at the extremes >(clipping at either extreme of brightness, and gradations), and cannot be >perfectly reversed..

This is true, but is TOTALLY unrelated to High ISO images. If a high ISO is accidentally used, the main consequence is the injection of digital noise).

Clipping of data is related to a Dynamic Range that exceeds the sensor. When a high ISO is dialed in, the meter compensates for this (higher shutter speed, higher f/stop).

Highlights that are 'blown' to pure white clipped at the upper end are not recoverable..

Again, true, but unrelated to ISO.

Other effects of high ISO such as more noise, particularly inshadows may be somewhat ameliorated, although this will likelycome at the cost of detail. And so forth..

Yep..

Thank you so much for the quick responses. I am so new to this and using messages boards... I am quite the novice at everything..

I uploaded two to flickr. I think this will be the proper url you suggested..

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

Thanks again for you help, insight and patience ..

The 2 pics are properly exposed but you have noise coming out of your ears. get a noise reducing/eliminating program. I use noise ninja, and am satisfied. there are others. they all work...

I was looking at noise ninja. Is this is a free program or is it purchased? There seemed to be quite a few options to choose from on the site..

Thanks for taking the time to check them out. They are awfully noisy ..

Raetherese wrote:.

I was looking at noise ninja. Is this is a free program or is itpurchased? There seemed to be quite a few options to choose from onthe site..

Noise Ninja may be downloaded and installed free of charge. However, some features are restricted, and images are watermarked with a grid pattern when you save them, unless you purchase a license..

Neat Image has a DEMO mode, but IIRC JPEGs are saved at Medium quality (I think)..

As the other poster said, these are full of digital noise.You really need to post a larger image to run and NR (Noise Reduction) on it..

This is the largest size on flickr. Like this?.

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

I don't think I can say it enough.... thank you! I think I am going to enjoy this group to learn from. I have always been scared of message boards but you guys are great!..

But, I'm no expert in Noise Removal  Perhaps some other member can help you..

IN THE FUTURE, always remember your WIFE (OK, I gather your a gal, but WIFE is the acronym we are stuck with).

Before you shoot any NEW scene, quickly recite to yourself WIFE, and then check these settings:.

W - White BalanceI - ISOF - Focus mode (AF/MF, AF-C, AF-S, etcE - Exposure mode/settingsWarm regards,DOF..

Thanks for the tips. I will try to figure out how to use those programs you guys suggested. I don't have photoshop and haven't had to fix pictures besides cropping so this will be interesting. Are they pretty easy to use programs or do have to have some knoweldge of this stuff for it to make sense?.

If only we could just send our bad pics to someone to fix right?  ..

(standalone version I don't have Photoshop or any other editor compatible with PS plug-ins).

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

There's a lot of noise in the original image, but the parts that are in areas which probably -should- be uniform (much of the backdrop) is easy to deal with. The noise on the faces, however, has overwhelmed much of the detail that should be there...

Rachel,.

You can use Nikon Capture NX to good effect. There is a 30 day trial with any Nikon DSLR but you can downloaded the trial and use it with any camera. I used it to good effect on noisy Oly jpegs. There are no restrictions on use:.

Having selected an image to work onClick on "Adjust" then "Noise Reduction"Set Sharpness to "10".

You will have to adjust Colour Noise Reduction to suit. Try 50% and work upwards (most photos only need about 20-30%).

You will find the higher the NR applied the more blurred/softened the image. So do this as a two stage process:.

1. As above then WHILE NR is still open click on the paint brush and minus and paint out Senator Clinton or whoever is the main subject of the photo (You can see where you have painted by clicking on "View" & "Show selection" (If you make a mistake change to "Plus and paint back in that bit)).

2. Apply NR again but this time use different settings and the PLUS brush so you apply NR only to Senator Clinton. Use less aggressive NR this time to preserve detail..

The above is a lot easier to do than it is to describe. It really is very easy. It works best with RAW images (NEFs) but works better than you would expect with JPEGs.You can change the brush size by Right clicking..

By way of a P.S. you can do the same sort of partial painting thing with Sharpening, Brightness, Colour Saturation etc etc. To illustrate I painted this with the Minus B & W brush leaving the main subjects colourised :.

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

Chris Elliott.

*Nikon* D Eighty + Fifty - Other equipment in Profile.

Http://PlacidoD.Zenfolio.com/..

If the issue is of noise, you can try Neat Image. I have used it and found very useful...If exposure is gone, I dont think you can do much...http://budding-nature-photographer.blogspot.com/..

Noise ninja is for purchase. it comes in 2 versions: one is a plugin for photoshop or pe while the other is a standalone. I ahve both. you can also obtain the noise profile that is made for your camera from the site. just follow their instructions to install. or there is a way to make your own profile.

The premade profile detects the iso the pic was shot with so it know exactly what the noise is...

Leejay Wu wrote:.

(standalone version I don't have Photoshop or any other editorcompatible with PS plug-ins).

Image control:Zoom outZoom 100%Zoom inExpand AllOpen in new window.

There's a lot of noise in the original image, but the parts that arein areas which probably -should- be uniform (much of the backdrop) iseasy to deal with. The noise on the faces, however, has overwhelmedmuch of the detail that should be there..

I tried tweaking the images as well. Wanting to impress the OP... .

I thought that all the noise was chroma, and Noise Ninja is great for that. Not this time. Not this time because a lot of the noise is from the luminince channel. Noiseware pro does a better job than Noise Ninjs for THIS image.

If the OP applys and gets rid of most of the noise (without getting carried away and reducing the image to plastic) most of this noise simply wont print. The printed image will look better than the one displayed on the net..

Dave..

Thanks so much for all the help and advice! I do really appreciate it..

I have an additional question. If I am going to an indoor event at an arena with funky lighting, is it best to still keep the ISO low or should I up it for that type of event? I'm still learning how to do that stuff with the ISO..

Thanks again for everything!..

Rachel:.

My rule of thumb is start low (100 or 200) and increase the ISO if needed to increase shutter speed..

Jerryhttp://jchoate.zenfolio.com/..

Raetherese wrote:.

Thanks!!!.

But what camera and what ISO was used for these images? I can't find any EXIF data..

Dave..