09-28-2017 05:58 AM
31 12
  1. Crasstoe's Avatar
    Crasstoe, could you maybe post links to the product pages of the adapter and macro filters? Maybe a tiny mini-guide for us non-knowledgeable? :)
    Okay people, mini guide on DIY DOF adapter is here. If I am patronising at all I apologise - it's been a long day at work.

    The reason you would use a DOF (Depth of Field) adapter with the beast grip is so you can attach SLR lenses to your phone, simple really. A DOF adapter works by giving the SLR lens something to "project" it's image onto, and you then focus your phones camera to the screen. The downside to this is the more you put between the SLR lens and your camera the darker the image gets, so this isn't really ideal for low light stuff without long exposure times.

    The first thing you need to do is decide what fitment lenses you are going to use. This is paramount as this affects the whole adapter. I chose to go with M42 (42mm screw fit) lenses, this would allow me to use some very cheap but well reviewed lenses that are readily available. The mount you choose to go with affects the FFD (Flange focal distance) of your lenses, and this is how far you need your "screen" from your lens mount, and this is the first part of the DOF adapter that we will make. FYI, the FFD of an M42 lens is 45.5mm (near enough!), and a guide to mounts and their FFDs can be found here Flange focal distance - Wikipedia, the free encyclopedia

    So you know how far your screen needs to be from your lens, "what's next" you ask, well you need a screen! This is also known as the GG (Ground Glass), and this can be made from almost any translucent material. Some people use CD cases, some use plastic film, most however will use the Focusing Screen from an SLR. I opted for the screen from an old 35mm camera that I found on eBay.


    Okay so you have a screen and lens, now for a tube to hold them at the right distance together. You want an object called a Macro Tube. Now, the size of macro tube you go for is dictated by the size of your Focusing Screen. My screen corner to corner comes in at 41.5mm, meaning as long as my macro tube is bigger than this I am all good. I went for a 42mm macro tube as this is the same size as the M42 lens I have chosen (meaning less step up rings). The macro tube I went with can be found here; Macro Extension Tube Ring Set M42 | eBay

    I ordered 2, as I wanted tube 2 and 3 together to go between the focusing screen and the lens (comes to 46mm), and I would need a tube to go the other side to connect to the BeastGrip.

    Now the problem with the 1020 is the focusing distance, it can only focus further than 15cm, a pain. This can be corrected with Macro Filters or Close Up Lenses (many names). This means the 1020 can focus closer than before. This takes a little trial and error. I went with a 37mm set of 4 that can be found here Digital Concepts 1 2 4 10 Close-Up Macro Filter Set with Pouch (37mm) | eBay

    The benefit of these lenses is they can be stacked to magnify further. Seeing I want the DOF adapter to be as short as possible I want to magnify as much as possible without causing a Vignette effect (this is where you can see the edge of the lens in frame). I stacked the 10x, 4x and 2x lens on top of another (one more would be too many). I then attached the spare 20mm macro tube from the second set I picked up, between the macro lenses and the DOF adapter, this turned out to be perfect.

    Now I need to attach this contraption to the BeastGrip, this is easily done with a 37mm -42mm adapter that can be found here 37mm-42mm 37-42 mm 37 to 42 Step Up Ring Filter Adapter | eBay
    Obviously this is dependant on the size of the macro tube you go for.

    Now I had a CPL (Circular Polarizing Lens) from an old camera that I fancy being able to use, so researching the lens I have chosen I found it has a 49mm filter fitment, and my filter was 62mm, so a simple step up ring was needed, which can be found here 49mm to 62mm 49-62mm 49mm-62mm 49-62 Stepping Step Up Filter Ring Adapter | eBay

    So you want to know what this thing looks like? Here are some pictures;

    The duct tape is so I know which ring to mount the Focusing Screen to (It is currently held in with blutac to see if I had everything right). Here is a photo sample, it's a bit poor due to low light and the focusing screen not being straight, and I didn't zoom in to make the screen full size, but you get the idea;

    Now the image you see on your phone will be upside down, it's just the way lenses work. On iPhones there is an app (nearlySLR or something like that) which allows you to "flip" your viewfinder which rectifys this issue, on WP we simply have to live with it. I have contacted Nokia asking for this feature to be added to Nokia Camera but we shall see if it gets through.

    I will post an update on mounting the Focusing Screen properly soon, and will post some pictures showing how it works in decent light and once all the lenses have been properly cleaned, they are filthy at the minute! Getting excited about how this is going to turn out!

    Here is a quick drawing (plan?) of the parts I have used;

    I am going to try and source another 10x macro filter to replace the 2x and 4x to try and bring the screen closer to the camera meaning less digital zoom, less glass between the screen and camera (meaning less glare) and to help shorten the DOF adapter, but if I can find something stronger I will.

    Let me know what you think guys!
    Last edited by Crasstoe; 01-30-2014 at 05:07 PM.
    01-30-2014 04:45 PM
  2. jenesuispasbavard's Avatar
    This is great! Photo samples please.
    Crasstoe likes this.
    01-30-2014 09:01 PM
  3. Crasstoe's Avatar
    Photo samples coming soon, still isn't finished! One of the questions that crops up is why not use a larger diameter macro tube. The answer, weight. They are heavier and the lens and focus screen wont benefit in anyway from a wider tube. The only thing that may benefit is the close up lenses being bigger mean less vignetting but only if you are stacking alot of them!

    Sent from my RM-875_eu_euro1_211 using Tapatalk
    01-31-2014 02:30 AM
  4. Crasstoe's Avatar
    I am a happy man, very happy.

    Used some thick cardboard as a mount for the GG (focusing screen) and the results are great!

    I placed a spare piece of the macro tube onto the card and traced around so I knew the size the cardboard needed to be, I then placed the GG on top of the traced circle and traced around that, so I knew what area of the cardboard mount needed to be removed to show the screen. I then cut this out with a stanley knife, and fitted the screen between the macro tube thread and cardboard using a hot glue gun (set to low - DO NOT USE SUPERGLUE, THIS WILL PERMANENTLY FROST UP YOUR SCREEN). I'll get photos up as soon as I can tomorrow, my phone died during testing.

    I have an additional set of 37mm macro close up lenses on the way (I want the +10) to help magnify further, as a lot of cropping was needed to get the photo to fill the frame. The end result from cropping the 34MP photo in photoshop is around 5MP, but you can judge for yourself what you think. These were taken in VERY low light with my LED lamp on the hot shoe mount, white diffuser attached and the CPL filter removed.

    Shot freehand, ISO 400, 1/10 second Exposure

    Resting on table, ISO 100, 1/2 second Exposure

    Resting on table, ISO 100, 1/3 second Exposure

    As soon as I have some decent sunlight I am taking this outside to see what it can do!

    Don't get me wrong, a modern Ground Glass Focusing Screen which is without imperfections and marks would give better results, but TBH this gives a lovely classic character to the photos without any nasty fake filters from Instagram-type apps!

    Your thoughts people?
    01-31-2014 05:38 PM
  5. Crasstoe's Avatar
    Pictures of how GG is held in;

    The complete setup;

    And now some sample shots;

    More can be found here; Willen Lake w/ DIY DOF Adapter Mk1 - a set on Flickr

    I am very happy with the results... however I cannot wait for the additional macro set to arrive, meaning I don't have to crop so much. I am also toying with the idea of fabricating my own Ground Glass, which would remove the focus markers and imperfections on the current glass, and I could use a round 42mm piece of glass, meaning no cropping necessary if the Macro rings are strong enough!
    darthhen likes this.
    02-01-2014 09:27 AM
  6. Crasstoe's Avatar
    A few more shots from today. After some more practice with how to hold the lens properly I can now adjust the aperture and focus rings with my index and middle finger on my left hand whilst supporting the lens from beneath with the palm of my hand. I also found that setting the brightness on the 1020 to -0.7+ stopped the photo from being blown out.

    shkshaka likes this.
    02-02-2014 07:27 AM
  7. shkshaka's Avatar
    Just a question... All pics you shoot with the DOF adapter, get this "thing" (I don't know it's name... newbie here :p) in the center of the pic? Can't remove it if I'd like to take someone's pic?
    02-04-2014 06:15 AM
  8. Crasstoe's Avatar
    That would be the focusing screen center marker, a pair of brackets [ ]

    It's etched onto the actual Ground Glass/Focusing Screen that I used to build the DOF adapter. I am waiting on some bits to arrive to have a go at making my own Ground Glass which would mean the focusing screen wouldn't have the center marker and it wouldnt be on the shots.
    shkshaka likes this.
    02-04-2014 10:04 AM
  9. shkshaka's Avatar
    Ic... Dude, Im really interested on doing something like this, but I'm really affraid of wasting money since I dont know how to do some things you've done...
    Is it hard to at least use something as it shows at the kickstarter...
    the last one, for example...

    02-04-2014 01:04 PM
  10. Crasstoe's Avatar
    Ic... Dude, Im really interested on doing something like this, but I'm really affraid of wasting money since I dont know how to do some things you've done...
    Is it hard to at least use something as it shows at the kickstarter...
    the last one, for example...

    It isn't hard but definitely not easy! Remember you will have no physical shutter button when your phone is in the BeastGrip, so you will have to press the on screen button, I find your thumb is the easiest way to do it. I think that photo is recording video, that way you only have to hold the phone with your right hand and then you can adjust your focus on the SLR lens with your left hand.

    You will have no auto focus so will have to do everything by hand. Holding can be a little awkward until you get the hang of it. I'll do a small video explaining how it all works and will show how it can be used, hopefully it'll help.

    I definitely wouldn't recommend this unless you fancy some tinkering to get it right. As soon as the extra bits have arrived I will post results from the Mk2 adapter, and if it is all good then there is no reason I couldn't offer to build the DOF adapters for you.

    Do you have an SLR or camera lens already that you would like to use if you go ahead? Reason I ask is you need to know what lenses you want to use with Beast Grip. I will probably be making a second DOF adapter in the future when I want to use more modern lenses but for now the old M42 lenses are keeping me happy.
    Last edited by Crasstoe; 02-04-2014 at 01:42 PM.
    shkshaka likes this.
    02-04-2014 01:31 PM
  11. shkshaka's Avatar
    I see... too bad we can't use the physical shutter with the beast =(
    Pls, do that video... It will help for sure...
    I don't have a SLR neither Lenses... In fact Idk yet which lens I could use. I would use something like these 50mm lens... May you recommend any?
    The thing is, how will I plug it onto the Beastgrip?

    If there is no prob for you, could you give me some tips and informations about lens and DOF, etc?
    thanks in advance
    02-05-2014 08:11 AM
  12. Crasstoe's Avatar
    You can but almost any step up ring, this is the ring that changes the size of the fitment, e.g. 37mm - 50mm etc...

    The faster your lens the quicker it will be at taking shots in low light. So you want a lens with a low f rating.

    Just tried using some window frosting spray on some glass to make a cheap focusing screen, i wouldn't bother. Its so grainy, lets little light through and is just plane awful. Going to try and find a more suitable focusing screen.

    Sent from my RM-875_eu_euro1_211 using Tapatalk
    02-05-2014 08:26 AM
  13. shkshaka's Avatar
    these 50mm is low f rating? Is it good? I mean, I choosed this 50mm 'cause Ive been reading some articles and I wanted to know the "eye" mm view...
    I read about 35mm and 50mm, but mostly of them mention 50mm as "eye" lens... is it right?

    With this I would be able to focus right? I wanted something like the link I mentioned above, from the kickstarter... I think I want something like these.
    What you think?
    02-05-2014 09:02 AM
  14. Crasstoe's Avatar
    The 50mm you mention is the length of the lens correct? A 50mm lens is a pretty versatile size, but remember a fixed lens will have no zoom.

    f rating is independent of the lens length. For example, my CSZ 50mm lens goes from f2.8, but there are plenty of faster 50mm lenses with ratings from f1.4 etc...

    As for the mm equivalent of your eye, I have no idea.

    You keep mentioning "these lenses" and "like these", if you are linking in your posts none of them are coming through on the thread, can you try again please?
    02-05-2014 09:09 AM
  15. shkshaka's Avatar
    So, even using the 1020, I wouldnt be able to zoom in, in case I do use the lens?

    Lens like these...

    and about the "eye" I meant something like this article here
    The Top 8 Reasons Why I'm a Big Believer in 35mm Lens Photography
    02-05-2014 09:29 AM
  16. Crasstoe's Avatar
    You will be able to focus with all of these lenses without a DOF adapter, except for SLR lensesc these are those shown in the bottom photo.

    You can zoom with the other lenses attached, but when using a DOF adapter with prime lenses you focus the 1020 onto the screen in the DOF adapter and zoom in to fill the screen on the phone. Then you focus and zoom everything on your SLR lens where possible.

    As i said I'll do a video explaining it all - aiming to do it this weekend.

    Sent from my RM-875_eu_euro1_211 using Tapatalk
    02-05-2014 09:48 AM
  17. shkshaka's Avatar
    In this pic, there are 1 dof adapter and 2 lens... so to use these lens i'll need a dof adapter, which is that you're teaching how to DIY the DOF?
    think Im getting it now :P
    and with the DOF, I can use not only these lens aside of it but advanced lens like u showed us here, right? All I need something else besides the DOF to advanced lens? I mean, any ring or anything else than the DOF to plug it onto the beast?
    02-05-2014 10:04 AM
  18. Crasstoe's Avatar
    You're getting it. I am showing in here how to make a DOF adapter. You can buy DOF adapters ready built but they aren't as cheap as making your own.

    I wouldn't use the term advanced lenses, not entirely sure what you mean, but any lens designed to be used with an SLR camera will need a DOF adapter.

    You will need a step up ring from 37mm (the BeastGrip thread) to the size thread of your DOF adapter (the macro tubes you are using to build it). You will then need an adapter to connect your DOF adapter to your lens (and your DOF adapter screen will need to be a certain distance from your lens and your phone).
    shkshaka likes this.
    02-05-2014 11:25 AM
  19. Crasstoe's Avatar
    New focusing screen arrived this morning, a Canon EE-A screen, it is much better, and there is now no center marker!

    Here is a screenshot to show what the viewfinder looks like when using this DOF adapter;

    And here is a video of me doing a very bad explaination of why you would use a DOF adapter and the adapter construction itself.

    EDIT: Video is no longer available. Flickr cut the video to 3 minutes long when it was 10 minutes long!
    Last edited by Crasstoe; 02-09-2014 at 05:16 AM.
    02-08-2014 10:15 AM
  20. shkshaka's Avatar
    seems nice now... when i shoot, does any pic get these "things" on the image?
    02-10-2014 07:37 AM
  21. Crasstoe's Avatar
    The close up lenses aren't strong enough to get the picture to fill the viewfinder on the 1020, meaning I have to use the digital zoom to get the picture the size you see.

    You can see the cardboard surround in the edge of the picture, this is removed by zooming in further, and there is a small hair on the focus screen which you can see in the corner (and a few dust specs) which I will remove when i get the chance.

    Sent from my Nokia Lumia 1020 using Tapatalk
    02-10-2014 07:47 AM
  22. Crasstoe's Avatar
    V3 of the adapter complete and much happier with it. I used the macro lens from a 37mm wide angle lens, and pressed it into one of the 42mm macro tubes (it wouldn't screw on but pressed in for a permanent fix).

    Here are some photos;

    And a short video showing the focusing on the lens itself;
    DIY DOF Adapter V3 Video Test | Flickr - Photo Sharing!
    02-15-2014 12:01 PM
  23. Crasstoe's Avatar
    Onto Mk4 of the adapter now - replaced with stronger diopters, meaning a shorter overall length and removal of the distracting circle effect on the bokeh. All taken with the Carl Zeiss Jena Tessar 50mm @ f/2.4 (wide open).

    DOF V4-2 by Crasstoe, on Flickr
    DOF V4-12 by Crasstoe, on Flickr
    DOF V4-13 by Crasstoe, on Flickr
    DOF V4-16 by Crasstoe, on Flickr
    DOF V4-19 by Crasstoe, on Flickr

    More can be found here; https://flic.kr/s/aHsk19zXPQ

    Mk5 is being planned currently and will likely see a replacement of the focusing screen (it's got a big scratch on the bottom corner) and I believe that a piece of rear projection screen may let more light through and with less desaturation.
    07-28-2014 02:23 PM
  24. Warren Manuel's Avatar
    Hi there! I must say this is some awesome stuff you have done here. Im sorry if I am increasing the ***** quotient of this post but here goes.
    As an amateur to photography I was considering a Cannon or Nikkor 18-55mm "All Purpose" lens kit. My question is with a DOF adapter will i be able to manually zoom? Furthermore ( I should have led with this...) I own a 1520. Will there be any changes i sgould expect?
    Thank you for your time
    08-05-2014 06:43 AM
  25. Crasstoe's Avatar
    If you were to attach a kit lens (one with adjustable length, giving adjustable zoom) then you would be able to zoom using the lens, and focus using the lens, as you would on a normal SLR.

    With the 1520 I couldn't comment but the principal is the same. You would need to work out how close you can focus with the camera, and adjust the length of the DOF adapter between the focusing screen and your phone to suit (obviously diopters will help make this shorter still).
    08-05-2014 06:54 AM
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