I've just got around to printing up a macro shot and I'm a little disappointed as it is not as sharp as it ought to be.
Equipment - Mamiya C330 with 80mm lens
Exposure 2s @ f:22
film Ilford delta 400, dev in X-tol 1:1
Naturally the set up was properly supported on a good tripod.
My question is - by using the small f:22 stop to increase depth of field did I inadvertently introduce a noticeable diffraction effect sufficient to to take the edge of the sharpness? Would the image have been sharper had I used f:8?
Thanks for any feedback.
Simple answer = YES
The amount of diffraction will be related to your calculated relative aperture from your 'bellows extension', so your f22 was really much smaller.