Intrepid 4x5 mk4 camera and wide angle lenses

[dpaqu]

Website says 80mm is the widest lens that works. I'm wondering if anyone has any thoughts on what the widest practical setup is. Between focal to flange difference, recessed lens boards, bellows compression, and the risk of getting the bedplate in the photo I'm a little nervous about buying a lens that won't work. I'm hoping someone has experience using something wider than 90mm.

[paulbarden]

I use a Kodak Wide Field Ektar on my Intrepid 4x5 and it works nicely, but barely covers the format. No room for movements, but neither does it require a recessed board. It’s also remarkably tiny, but so sharp and capable!

[dpaqu]

That's a 100mm lens right?

[Kiwi7475]

Back a while ago, I used the mk3 successfully with a 90mm lens in a recessed board (I think 17mm). I also tried with a 75mm (also recessed) but I wasn’t able to focus at a few meters away (let alone infinity). I think 90mm (I don’t have any lens between 75 and 90mm) may be the practical limit.

[dpaqu]

Back a while ago, I used the mk3 successfully with a 90mm lens in a recessed board (I think 17mm). I also tried with a 75mm (also recessed) but I wasn’t able to focus at a few meters away (let alone infinity). I think 90mm (I don’t have any lens between 75 and 90mm) may be the practical limit.
Did you have any room for movements with the 90 and recessed lens board?

[Kiwi7475]

Did you have any room for movements with the 90 and recessed lens board?

Honestly the few times I used it, I didn’t have to use any movements, except for a bit of front rise, which was fine. Looking at my notes from back then, I didn’t write down how much rise, though, so probably it was small (0.5” maybe?); if it’s 1” or more I usually write it down.

[paulbarden]

That's a 100mm lens right?

Correct.

[dpaqu]

Noticed this video indicating that wide angle lenses (80- 90mm?) don't work without tilting the bed.
https://youtu.be/7HB7rzgED1M
Looks pretty annoying if it's true. I ordered my camera in February and have been told it should ship this month. I've bought the needed center filter and lensboard to utilize the Schneider 80mm lens so I really hope it works.

[KarlT]

A lot has been said about adding an additional front standard fixing point behind the existing ones to get the front and rear standard closer together. Unfortunately I don't think Intrepid offer a bag bellows option yet so bellows compression may be a problem, also if you have an amount of base board out the front you will reach a point where the camera may show in shot.

[lassethomas]

203839
203840
I did this little extension.
I've even succeeded to get the Super Angulon 47mm XL to work with a 15mm recessed board. Not recommended though. Very finicky to work with and to adjust the shutter and aperture.
But for my Super Angulon 75mm it works like a charm.

[lcpr]

Noticed this video indicating that wide angle lenses (80- 90mm?) don't work without tilting the bed.
https://youtu.be/7HB7rzgED1M
Looks pretty annoying if it's true. I ordered my camera in February and have been told it should ship this month. I've bought the needed center filter and lensboard to utilize the Schneider 80mm lens so I really hope it works.

The bed doesn't show at all with a 90mm (using my black MkIV and a Nikkor 90/8 on a flat board) in either landscape or portrait orientation. My Linhof's bed does show with a 90mm in portrait orientation but it's a simple matter of adding some slight front rise to clear the bed. You should be good with your 80mm, on my 90mm @ infinity I still have a fair amount of thread left on the focusing screw. A recessed board will probably help you get some more flexibility out of the bellows though.

[dpaqu]

203839
203840
I did this little extension.
I've even succeeded to get the Super Angulon 47mm XL to work with a 15mm recessed board. Not recommended though. Very finicky to work with and to adjust the shutter and aperture.
But for my Super Angulon 75mm it works like a charm.

That's ingenious sir. Btw I love your 6x12 color work.

[lassethomas]

That's ingenious sir. Btw I love your 6x12 color work.

Many thanks

[mclellanphoto]

Many thanks

Hi, looking to do this with my intrepid, I presumed that the front standard fastener was a 1/4"-20 bolt (it wasn't). Curious to know what bolt you used (Is it an M6? and threaded insert). Best, John

[lassethomas]

Hi, looking to do this with my intrepid, I presumed that the front standard fastener was a 1/4"-20 bolt (it wasn't). Curious to know what bolt you used (Is it an M6? and threaded insert). Best, John

I presumed the same, and made a special order (Sweden is very metric), to no avail. Now I have a lot of extra bolts for my tripods.
Turned out hat M6 was fine.

A bolt and a insert for $2 did it.

[mclellanphoto]

I presumed the same, and made a special order (Sweden is very metric), to no avail. Now I have a lot of extra bolts for my tripods.
Turned out hat M6 was fine.

A bolt and a insert for $2 did it.

Thanks! Being in the US myself I need to order out for the metric fittings. So it goes! I'll post when I get it all put together. (I also now have a bunch of bolts and inserts... must be something to make with them). Cheers

[rfesk]

Many local hardware stores in the US (Ace, Tru-Value etc.) have a specialty screw section. No problem finding the items even in a small town.

[mclellanphoto]

Many local hardware stores in the US (Ace, Tru-Value etc.) have a specialty screw section. No problem finding the items even in a small town.

Of course, no issue finding an M6-25 but the head is hex and not finger friendly, much rather have a usable knob and after looking at local ace/home depot/rockler/lowes couldn't find what I wanted.

[Tin Can]

https://www.nbk1560.com/en-US/products/machine_element/knob/KNM/KNM-24-M6/KNM-24-M6-25/

I don't know if this works on that camera...

Of course, no issue finding an M6-25 but the head is hex and not finger friendly, much rather have a usable knob and after looking at local ace/home depot/rockler/lowes couldn't find what I wanted.

[G Benaim]

Is the 810 intrepid equally wide angle challenged?

[KarlT]

Is the 810 intrepid equally wide angle challenged?

On the web site it says minimum bellows extension on the 8x10 is 100mm but usable lenses are 180+. With a folded thickness of just 75mm there has got to be ability to probably get down to 150mm?

[mclellanphoto]

https://www.nbk1560.com/en-US/products/machine_element/knob/KNM/KNM-24-M6/KNM-24-M6-25/

I don't know if this works on that camera...

That'd be perfect; I went with a blackened finish knurled thumb screw from JW Winco (https://www.jwwinco.com/en-us/products/2.2-Tensioning-clamping-with-handles/Knurled-screws-nuts/DIN-464-Steel-Knurled-Thumb-Screws?gf-mat=2).


I presumed the same, and made a special order (Sweden is very metric), to no avail. Now I have a lot of extra bolts for my tripods.
Turned out hat M6 was fine.

A bolt and a insert for $2 did it.

214563214565http://mclellanphoto.com/wp-content/uploadsopen/2021/04/RM_9851B.jpg

I think it turned out okay.

[lassethomas]

That'd be perfect; I went with a blackened finish knurled thumb screw from JW Winco (https://www.jwwinco.com/en-us/products/2.2-Tensioning-clamping-with-handles/Knurled-screws-nuts/DIN-464-Steel-Knurled-Thumb-Screws?gf-mat=2).


214563214565http://mclellanphoto.com/wp-content/uploadsopen/2021/04/RM_9851B.jpg

I think it turned out okay.

Looks great. Much more stylish than mine

[Mathieu Gooodwin]

203839
203840
I did this little extension.
I've even succeeded to get the Super Angulon 47mm XL to work with a 15mm recessed board. Not recommended though. Very finicky to work with and to adjust the shutter and aperture.
But for my Super Angulon 75mm it works like a charm.

I was deep in the mental weeds seeking a solution, this is so elegant!

[Corran]

A bit of information I thought I'd add to this thread:

Using a recessed lens board, a 72mm XL works on the Intrepid, stock. In vertical orientation, you have to be cognizant of the front of the camera as it is possible to intrude into the image area with any fall.

I believe that is the widest lens possible to use on the Intrepid, without using one of the above ideas.

[Ben]

I'm trying to make a similar adapter. Could someone please help with the following info:

1) the length, width and height
2) Distance between the two holes
3) Diameter of each hole
4) Type of thread

To confirm the Knurled Knob is a DIN 464-M6-25?

[lassethomas]

I'm trying to make a similar adapter. Could someone please help with the following info:

1) the length, width and height
2) Distance between the two holes
3) Diameter of each hole
4) Type of thread

To confirm the Knurled Knob is a DIN 464-M6-25?

Mine is 50mm length, 90mm wide and 18mm high. None of them critical I think.
Distance between holes are 25mm. So that is what you gain in extension.
Diameter of front hole is 6,5 mm and of back to fit a M6 threaded insert. Depens on your insert but around 10mm
Thread is M6.

[Ben]

Thank you!
Confirming that the front screw size is DIN 464-M6-25?

[lassethomas]

Thank you!
Confirming that the front screw size is DIN 464-M6-25?

Don’t know. I just use an ordinary 25mm M6 hex screw

[lassethomas]

Formalized the Intrepid extension a little bit today by doing a 3D print and getting a nice knurled screw.

222636 222637

Did a flange to film measurement and got it to about 47mm. Little enough for any 4x5 lens I know about.
Movements are of course very limited since the bellow is very compressed. And there would be problems in portrait mode getting the rail in the picture, at least with a super wide.
But it works, and if you don't use a lot of fall on the front standard you can keep it on all the time.

This is the screw I got:
https://www.ebay.com/itm/164981595450?var=464521777930

Anyone who want to print themself can pm me for the stl file.

[lassethomas]

Formalized the Intrepid extension a little bit today by doing a 3D print and getting a nice knurled screw.

222636 222637

Did a flange to film measurement and got it to about 47mm. Little enough for any 4x5 lens I know about.
Movements are of course very limited since the bellow is very compressed. And there would be problems in portrait mode getting the rail in the picture, at least with a super wide.
But it works, and if you don't use a lot of fall on the front standard you can keep it on all the time.

This is the screw I got:
https://www.ebay.com/itm/164981595450?var=464521777930

Anyone who want to print themself can pm me for the stl file.

And now the file is up on Thingiverse for anyone who wants to print
https://www.thingiverse.com/thing:5739243

[dpaqu]

Christmas must be here. Fantastic.