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benjamin
Guest
I have this difficulty getting the whole newt in focus, any tips would be welcome, here are some examples of what I mean:
Your first sentence agrees with what I said. The reason compacts have such huge depth of field for their f number is that the sensor is tiny. It's a physics thing and I can't remember the indepth explanation of it. Your Canon doesn't have f/32, the lens does. And the largest f number is dependent on each lens. Try doing a search for hyperfocal distance on google.I find that in point and shoots, you have a much greater DOF, since most of them only go from like f2.8 to 4 something. I have a canon 350d, and the largest Fstop is 32. Which, of course is a really slow shutter speed, but it can be done.
Yes, ISO's a fine thing, but if you're taking macro photos, detail is very important and so the noise conferred in higher ISOs can only really be avoided by shooting in low ISOs with a good flash. Most recent digital SLRs give quite acceptable noise up to about ISO 800. But in macro, detail is key and I find noise is easier to notice.I agree with everything that youve said. Definitely need more light, definitely need a higher f-stop [smaller aperture] One of the things, that wasnt mentioned is ISO. If you have no intent to print out your pictures, a high ISO can be used. It helps you to sacrifice light for a faster shutter speed.
Yes aperture mode is generally the way to go, or full manual if you have a nice flashgun.I would recommend shooting in the aperture priority mode [looks like Av on the dial] so when you click the wheel left and right, to set the F stop, it automatically compensates the shutter speed so you get the correct exposure. Another idea, is to step down the exposure, if you let it take pictures slightly darker, its something that is fairly easy to correct in photoshop.
They can kill your sharpness and contrast though. All of these shortcuts bring compromises.There are lens attachments that you can get on EBAY, they are called 10+ zoom lens, and they screw on to the front of your lens, and magnify your subject, along with shortening how far away from your subject you have to be to focus. With that you also sacrifice DOF [at F8, itll look like F4] but you can get some pretty cool abstract macros.