[mysterick]

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I have misplaced the screw-in part on the DA 40 that screws into the shade. Any ideas where I can find one? Is it called a lens cap? I have been inserting an ilford film canister lid for easy access, and so I wouldn't lose the original. Go figure!

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Last edited by mysterick; 01-05-2019 at 10:42 AM.

[aslyfox]

I have misplaced the screw-in part on the DA 40 that screws into the shade. Any ideas where I can find one? Is it called a lens cap? I have been inserting an ilford film canister lid for easy access, and so I would lose the original. Go figure!

are you looking for the item for the 40mm XS ?

I spent a long time looking for one

https://www.pentaxforums.com/forums/81-expired-listings/365645-wanted-expire...ml#post4274155

then UncleVanya suggested a simple solution:

get a 27mm screw in filter and permanently attach the commonly available press on cap making one " cap "

it works for me, when I don't want the cap, I just unscrew the filter and cap unit

[mysterick]

(aslyfox):

This is an original(?) cap for the SMC 40mm Limitd. It's in two parts: the MH-RC 49mm hood and the screw in cap. Very classy (if you have one that is!).

[aslyfox]

(aslyfox):

This is an original(?) cap for the SMC 40mm Limitd. It's in two parts: hood and screw in cap. Very classy (if you have one that is!).

there are 3 DA 40 mms

the " best in its class " XS


the 2 limiteds, SMC and HD

I have both the XS and SMC variant

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the opening in the hood of the SMC and HD I believe is 30.5m:


The lens hood has a 30.5 mm filter thread allowing for smaller filters when the hood is mounted.

Read more at: HD Pentax-DA 40mm F2.8 Limited Reviews - DA Prime Lenses - Pentax Lens Reviews & Lens Database


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The lens hood has a 30.5 mm filter thread allowing for smaller filters when the hood is mounted.

Read more at: HD Pentax-DA 40mm F2.8 Limited Reviews - DA Prime Lenses - Pentax Lens Reviews & Lens Database

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so the idea would work if you can find an appropriate size filter ??

good luck

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Last edited by aslyfox; 01-05-2019 at 10:55 AM.

[Merv-O]

are you looking for the item for the 40mm XS ?

I spent a long time looking for one

https://www.pentaxforums.com/forums/81-expired-listings/365645-wanted-expire...ml#post4274155

then UncleVanya suggested a simple solution:

get a 27mm screw in filter and permanently attach the commonly available press on cap making one " cap "

it works for me, when I don't want the cap, I just unscrew the filter and cap unit

Exactly....bought a 27mm promoter uv filter and it works well...

[Hornet]

The plastic cap for Fuji film canisters fits perfectly.

[Merv-O]

The plastic cap for Fuji film canisters fits perfectly.

That's a great hack !

[aslyfox]

yes it is but the OP wants another solution other than the film cannister cap

[Pentax Syntax]

I think you want this:

Pentax Front Lens Cap for DA 40mm f/2.8 Lens - Black 31493

The original may be best; still available

[mysterick]

The plastic cap for Fuji film canisters fits perfectly.

Maybe it is Fuji, not Ilford; it's been so long!

[Merv-O]

I think you want this:

Pentax Front Lens Cap for DA 40mm f/2.8 Lens - Black 31493

The original may be best; still available

I don't think that will fit the 40mm f2.8 XS...See photo below the ADORAMA cap is the 49mm cap for the HD version. that has the scale and aperture on it. the XS version is a strict 27mm cap. In my photo the lens has a promaster 27mm filter.

Make sure we know which version he has....

[Merv-O]

This may be an effective inexpensive fix....

[Pentax Syntax]

I don't think that will fit the 40mm f2.8 XS...See photo below the ADORAMA cap is the 49mm cap for the HD version. that has the scale and aperture on it. the XS version is a strict 27mm cap. In my photo the lens has a promaster 27mm filter.

Make sure we know which version he has....

Yep. If it’s the XS lens it this cap:

amazon.com : Pentax O-LC27 27mm Front Lens Cap for -DA 40mm f/2.8 XS Lens : Camera Lens Caps : Camera & Photo?tag=pentaxforums-20&

Bought one of these for my son. OP specified DA 40. Hard to tell which he needed; both are available

[yucatanPentax]

Im not sure which one is being looked for. This seems to be the one for the XS lens.

NEW Pentax 27 mm front cover from JAPAN Freeshipping 4549212215292 | eBay

This is the one for the DA (non-XS) lens (hood with dedicated 30.5mm cap):

https://www.ebay.com/itm/Pentax-MH-RC49mm-hood-for-DA-40mm-Limited/233078888...LYCE:rk:5:pf:0

And here's a 30.5mm screw in metal cap:

https://www.ebay.com/itm/30-5mm-Metal-Screw-in-Front-Lens-Cap-Fits-Filter-Sa...Oxl-:rk:5:pf:0

[jumbleview]

I found screw cap non-convenient. I put in into the bag and in the field use plastic 30.5 cap. I do not remember which one exactly I bought but it something like this:
ProOPTIC 30.5mm Plastic Snap-on Lens Cap PROCLSO305