Question Regarding Coin Photo Sizes And Uploading

You can post whatever size pic you like as long as you host it somewhere and then link to the hosted image. 90k limit is for uploaded photos that the forum hosts. Problem with external hosting is that if you delete or move the image, the pic no longer displays. Note that the forum software is also fairly "smart" and won't allow a full size image to display if it is too large, and instead will down-size it until if fits on the screen. I haven't figured out what the max pixel count is yet, but I expect it's something like 640 wide. If the image is wider than 640 pixels, the forum software resizes it automatically. Anyone know the actual limit?

I use photobucket for my hosting. Once you upload the photo to photobucket, you link to it with html image tags. This allows you to go beyond the 90k limit but you have to have someone to host for you.

ResizedPx = YourWindowWidthPx / 1.8

Let's try presenting the same image a few different ways. I am curious how this will turn out!

This dime image was taken at original 4928 x 3264 resolution.

This is resized to 1232 x 816, and saved at highest quality. Size is ~360kB. Hosted at Photobucket:


Here is same image, 1232 x 816, and saved at highest compression. Size is ~88kB. Hosted at Photobucket


And here is the same 88kB image, hosted on CCF server:


Here is the same image, resized to 616 x 408, saved at highest quality, 196kB, hosted at Photobucket


And finally, the same image, 616 x 408, saved at 2nd highest quality, ~82kB, hosted on CCF server:

The optimizer does a pretty good job. However, the original can still be clicked on to get a larger image, so there is definitely an advantage to external hosting if you want to make a large image available. But if you put the image on the CCF server, it's not going to go anywhere or disappear, or change over time, or ...

I'll chime in just because it works for me. I use imageshack (same thing as photobucket) and use the "Direct Link" provided by them. I just do this because I like to keep an empty memory card on the camera. Not that I need to with an 8 gig card, but it's habit...

Anyway imageshack has an option that will let you auto size your images for web postings (I think it's 800x600 or to scale) which makes it really easy as well. I just resize mine to 800 wide in my editing program and let it scale. Usually makes them a pretty good KB size at that point too. Hope this helps

Good looking picture. Why ISO 80? I'd crank it up to 800-2000 to get the exposure time down. 1sec exposure is a potential problem due to vibration, etc.

Ahhh, I was thinking DSLR world. I would personally still worry about even 1/2sec due to low freq vibrations. In DSLR's there is a "long exposure noise reduction" function that reduces the effects due to LF vibrations. Not sure where it kicks in, but I've never had good results even with my rock solid microscope stands below 1/10sec, corresponding to 10Hz vibration frequency. I suppose the best compromise is a balance between LF vibrations and high ISO gain noise, but I think it's likely that ISO80 is nowhere near the limiting ISO for noise.