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Do you have any examples of this? I've been interested in building this Pi camera using a lens with a shallow depth of field, but it's very hard to figure out a

Do you have any examples of this? I've been interested in building this Pi camera using a lens with a shallow depth of field, but it's very hard to figure out a lens to get that will work with the Pi, look right if mounted from around 2 to 3 feet away, and have a decent quality picture. After spending a bunch of time researching, I got this feeling if I pursue this project I'll end up with hundreds of dollars of bad lenses and just wish I would have bought a real DSLR or mirrorless camera that connects via USB.

geerlingguy 6y ago
If you really just want that bokeh, it's going to be much easier and look a lot better with a DSLR air mirrorless. I typically use my Sony a6000 with a 30mm f/1.4 lens at f/2.0. You won't be able to get the same kind of background separation using the tiny sensor on the HQ camera. I bought a Tamron 1.4 8mm lens that gives a similar effect to what my Sigma 30mm E mount lens gives at f/4 or so, if it's positioned about 2' away.
bmurphy1976 6y ago
>it's very hard to figure out a lens to get that will work with the Pi, look right if mounted from around 2 to 3 feet away This is why I purchased a Commonlands lens instead of a variety of others (including Arducam). The owner has gone through the trouble of taking a consistent photo of the imatest pattern for each lens they are selling, i.e. this: https://cdn.shopify.com/s/files/1/0273/9273/7398/products/cellphone-4-2mm-m12-lens-14641003233398.jpg?v=1601414029 https://cdn.shopify.com/s/files/1/0273/9273/7398/products/ce... and measuring the amount of distortion and listing it as part of the specs. That gave me a really good idea what the picture was going to be like before I purchased the lens, and the product I received accurately reflects what was shown in the image. It also showed me that even a small amount of distortion (2%) was too much for my use case.

geerlingguy 6y ago

If you really just want that bokeh, it's going to be much easier and look a lot better with a DSLR air mirrorless. I typically use my Sony a6000 with a 30mm f/1.4 lens at f/2.0. You won't be able to get the same kind of background separation using the tiny sensor on the HQ camera. I bought a Tamron 1.4 8mm lens that gives a similar effect to what my Sigma 30mm E mount lens gives at f/4 or so, if it's positioned about 2' away.

bmurphy1976 6y ago

>it's very hard to figure out a lens to get that will work with the Pi, look right if mounted from around 2 to 3 feet away This is why I purchased a Commonlands lens instead of a variety of others (including Arducam). The owner has gone through the trouble of taking a consistent photo of the imatest pattern for each lens they are selling, i.e. this: https://cdn.shopify.com/s/files/1/0273/9273/7398/products/cellphone-4-2mm-m12-lens-14641003233398.jpg?v=1601414029 https://cdn.shopify.com/s/files/1/0273/9273/7398/products/ce... and measuring the amount of distortion and listing it as part of the specs. That gave me a really good idea what the picture was going to be like before I purchased the lens, and the product I received accurately reflects what was shown in the image. It also showed me that even a small amount of distortion (2%) was too much for my use case.