Recent content by David

Thanks, it would appear that with a 60mm lens at 5ft with f/11, I would get around 0.88ft, which is about right for what I'm seeing. I think things are finally starting to fall into place. So further back = slightly better DoF and also higher stop number = better DoF. Anything else, from...

Ok thanks :) I'm just checking out that Helicon focus, but I can't see any mention of it accepting 40D RAW files.

Thanks pxl8, What would be the drawbacks of using f22, are there any if I'm using a tripod and the subject isn't moving? Just reading about focus stacking - I was thinking a similar thing by taking a shot with the focus point being the top and one in the middle and blend in photoshop. I was...

Hi, I've been pondering again. Lets say that I was shooting a subject that is about the size of a PC motherboard (bit bigger than an a4 sheet of paper) at this kind of angle. (thats not my pic by the way). With the gear I have, I'm struggling to get all of the item in focus. I have...

Thanks for the replies - contacts are clean, there are a couple of specs of dust inside the lens that came factory fitted. Seems to be softer, even mid way through the zoom range. Yes, sorry, it's the EF-S 17-55mm IS f2.8. I'll get the pics done now :) Yes

Hi Stewart, Yes, I could do some pics tomorrow, no problem there. What I was trying to say was that if I sit my camera on a tripod and aim it at something with the 17-55mm fitted, then swap the lens for another one (55-250mm) and then compare the shots at the same focal length, the 17-55mm is...

Hi, Apologies if this is a really obvious question, but I'm not sure what to do. My 17-55mm appears to be developing a fault, in so much as it is getting softer and softer and I'm seeing more and more noise in my raw files. If I swap lenses, I can get decent shots. I'm admittedly a...

Thanks Chaps! Looks like I've got some thinking to do then :)

I have the 9371 tripod and 7302 ball head and I'm really impressed by both of them. They are solidly built, everything fits together nicely and there is no sag/creep (or whatever you call it) from the ball head, even with a 580EX + 17-55 lens fitted sideways. Also on the head part, the knobs...

Thanks for the replies. I had a feeling it might be a little optimistic, but it was worth a shot. What about if I lower my sights slightly, and still keep the IS and sharpness, but lose the wide angle and go for something in the 50-100 region? So, just out of curiosity, these uber...

Hi folks, First post here, but I have been a lurker for a while. I already have a 40D, EF-S 60mm and EF-S 17-55 IS. I love the 60mm, but I really miss the IS, and my 17-55 isn't any where near as sharp, so I was wondering if anyone can recommend a good solid lens that is as sharp, or...