GF 30 vs 32-64

Started 5 months ago | Discussions thread
norjens Regular Member • Posts: 392

left eye wrote:

The 32-64 has a major curved plane of focus.

Jim acknowledged that via the similarity between the lenses in question was only possible by using edge/corner AF focus when he tested the edge sharpness of the zoom.

In real-world use you normally focus close to the centre - and hope the edges will be sharp-ish! With the 32-64 they are not, with the 30 they are.

Enuf said.

For environmental portraits the zoom is great, defocusing edges while keeping your central subject sharp, yet bringing in really close details at the corners, magic if that's what you're after, otherwise the 30 is more predicable and overall far better ...if you only need to shoot wide without lens changes.

The zoom is sharp in the corners but ONLY much closer than the central-ish focus plane, otherwise the corners and sides will be poor.

Certanly the 30mm is far better than you might gather elsewhere compared to the 32mm end of the zoom. Just as the GF 50mm is a wonder compared to 50mm in the zoom.

I still don't see how this is a negative in general. Sometimes I'd prefer my plane of focus to be flat and angled to the left or right, sometimes I'd prefer it to be curved away from me, sometimes flat and straight, etc. Some of those don't exist, but point is that in real life use I never have the perfect focus plane for my shot, and no particular shape is always better aligned.

If there's some repeating use case, one can be better. Like if you're scanning papers or paintings, you want a flat plane of focus. Same if you're testing lenses on standardized scenes, it's faster with a flat plane if your scene is flat. Alternatively if you're taking large group photos of people in a semi-circle so that everyone's the same size in the frame, you'd want a plane that is similarly equidistant; curving towards you.

@fkaphotoblogger indicated that it's for street and hiking photos, in which case the subjects can be anywhere in relation to each other. In that case the plane of focus might as well be shaped like a saddle for all I'd care.

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