Lens cap for DA 40mm 2.8 Limited ?

tokyoso · 01-30-2010, 05:33 AM

I got suckered into LBA, and got a DA 40mm 2.8 ltd. Ok, not really suckered, it was a good advise as I loved the lens.

It came with screw on cap and hood. What should I best do? get a 49mm lens cap? or 30.5 opening?

I've already screwed on a 49mm filter, but do I really need it? the filter is like 1/3 the size of the lens.

thanks in advance

Last edited by tokyoso; 01-30-2010 at 05:55 AM.

ll_coffee_lP · 01-30-2010, 06:02 AM

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/76417-great-le...m-limited.html

Forum thread with some great info for you.

c[_]

jeffrey r · 01-30-2010, 06:25 AM

Those 30mm caps are what I have been using for some time with my DA 40. Work great.

tokyoso · 01-30-2010, 06:55 AM

cool thanks. looks just like the one I have on my M 50 1.4

Marc Sabatella · 01-30-2010, 01:16 PM

You need the filter if if it's a polarizer and you're tryig to reduce reflections, or it's a ND filter and you're trying to reduce the amount of light, or if it's an orange filter and you're looking to correct a color cast. If it's just a UV "dealer profit protecting" filter, you don't need it.

As for lens caps, what's wrong with the one the lens came with? I prefer it over the alternatives I've tried. But some like using a Fuji film canister cap. I find it too fiddly. Mostly, I leave the cap off the lens, as the hood itself provides a decent mount of protection.

tokyoso · 01-30-2010, 06:52 PM

Marc,

There isn't anything wrong with the lens cap that came with. It's quite nicely built actually, but it's a screw on so it takes a screwing to put it on/off. clip ons are faster to use for me.

I have a UV filter on but the lens itself is actually quite tiny in diameter. I think i'll try leave the hood on and do without UV filter, as you suggest. I have UV filter on my other lens all the time so I dont touch the lens, since I'm kind of clumsy..

pdo · 01-30-2010, 07:01 PM

I recommend the Fuji film canister. That lens cap is so small that it's so easy to lose

tokyoso · 01-30-2010, 07:03 PM

Originally posted by pdo

I recommend the Fuji film canister. That lens cap is so small that it's so easy to lose

thanks, will try that too. i think i have one in a box somewhere.

01-30-2010, 05:33 AM	#1
tokyoso Veteran Member Join Date: Jan 2010 Location: Tokyo Photos: Albums Posts: 723	Lens cap for DA 40mm 2.8 Limited ? I got suckered into LBA, and got a DA 40mm 2.8 ltd. Ok, not really suckered, it was a good advise as I loved the lens. It came with screw on cap and hood. What should I best do? get a 49mm lens cap? or 30.5 opening? I've already screwed on a 49mm filter, but do I really need it? the filter is like 1/3 the size of the lens. thanks in advance Last edited by tokyoso; 01-30-2010 at 05:55 AM.

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01-30-2010, 06:02 AM	#2
ll_coffee_lP Inactive Account Join Date: Jan 2008 Location: Ontario, Canada Posts: 1,972	https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/76417-great-le...m-limited.html Forum thread with some great info for you. c[_]

01-30-2010, 06:25 AM	#3
jeffrey r Veteran Member Join Date: Sep 2008 Location: New Jersey, USA Posts: 337	Those 30mm caps are what I have been using for some time with my DA 40. Work great.

01-30-2010, 06:55 AM	#4
tokyoso Veteran Member Join Date: Jan 2010 Location: Tokyo Photos: Albums Posts: 723 Original Poster	cool thanks. looks just like the one I have on my M 50 1.4

01-30-2010, 01:16 PM	#5
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	You need the filter if if it's a polarizer and you're tryig to reduce reflections, or it's a ND filter and you're trying to reduce the amount of light, or if it's an orange filter and you're looking to correct a color cast. If it's just a UV "dealer profit protecting" filter, you don't need it. As for lens caps, what's wrong with the one the lens came with? I prefer it over the alternatives I've tried. But some like using a Fuji film canister cap. I find it too fiddly. Mostly, I leave the cap off the lens, as the hood itself provides a decent mount of protection.

01-30-2010, 06:52 PM	#6
tokyoso Veteran Member Join Date: Jan 2010 Location: Tokyo Photos: Albums Posts: 723 Original Poster	Marc, There isn't anything wrong with the lens cap that came with. It's quite nicely built actually, but it's a screw on so it takes a screwing to put it on/off. clip ons are faster to use for me. I have a UV filter on but the lens itself is actually quite tiny in diameter. I think i'll try leave the hood on and do without UV filter, as you suggest. I have UV filter on my other lens all the time so I dont touch the lens, since I'm kind of clumsy..

01-30-2010, 07:01 PM	#7
pdo Senior Member Join Date: Sep 2008 Location: Westminster CA Posts: 264	I recommend the Fuji film canister. That lens cap is so small that it's so easy to lose

01-30-2010, 07:03 PM	#8
tokyoso Veteran Member Join Date: Jan 2010 Location: Tokyo Photos: Albums Posts: 723 Original Poster	Originally posted by pdo I recommend the Fuji film canister. That lens cap is so small that it's so easy to lose thanks, will try that too. i think i have one in a box somewhere.