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Egg Salad · 03-31-2010, 10:06 AM

Assuming I'd have my Sigma lens line up completed I'd have the 28/1.8 Macro, 50/1.4 HSM and (already succeeded) 70-200.
So my question is: could I put the 50's hood on the 28mm lens and the 70-200's on the 50?
Reason is flare protection. These new lenses probably fare better than my "old" Asperical II but you can never have too much hood.

sterretje · 03-31-2010, 10:25 AM

In general: no.

The lens hood for a longer focal length lens is longer and will cause vignetting on a lens with shorter focal length. On all lenses that I have owned, the lens hoods are different.

**Lowell Goudge** · 03-31-2010, 10:48 AM

I think I understand where you are coming from. I have a sigma APO 70-200F2.8 EX (non DG Non Macro)

While I have never had an issue with flare, I don't shoot close to the sun, and I do know that this lens is a full frame lens.

I have often wondered why lens manufacturers of full frame lenses, don't offer options for ASP-C Hoods, which could be longer and allow shooting closer into the sun.

My tamron 28-75 F2.8 is in the same boat, as are all my K Mount lenses with standard hoods, and my SMC-FA-J 18-35.

All the hoods are designed for no vignetting with film (36x 24 mm frame) not ASP-C with a 24x 16mm frame.

Egg Salad · 03-31-2010, 11:27 AM

Yes, I know they are designed for full frame coverage which is the reason they are about 50% too short (to offer perfect length) when used on smaller sensors (such as Pentax').
So knowing that all of the mentioned lenses are designed for full frame (and also all having 77mm threads) their hoods also are. And with a 28mm lens giving the same FOV as a 43mm lens the 50/1.4 is close enough to make it logical to me to use its hood on this said 28/1.8 and the hood for the 70-200 on the 50/1.4 which by itself would offer the FOV of a ~75mm lens.
Still wouldn't have a perfect hood for the 70-200 but I would need to buy a 100-300 then and I won't go this far. But maybe I could find this only hood, too.

To let you know: Sigma will ship their newly developed 70-200 OS DG whatever with a 2-way hood - fitting both FF and APS-C. Don't know about their other new lenses.

EDIT: I think the Sigma 100-300 actually has a filter thread of 82mm so even if I'd mean that seriously I couldn't use its hood on my other lenses.

Last edited by Egg Salad; 03-31-2010 at 12:10 PM.

deadwolfbones · 03-31-2010, 02:19 PM

I know that on the Tamron side the hood for the APS-C 17-50/2.8 is identical (same part number and everything) to the hood for the FF 28-75/2.8.

...which makes sense since they're essentially the same FL's.

Blue · 03-31-2010, 02:40 PM

Originally posted by deadwolfbones

I know that on the Tamron side the hood for the APS-C 17-50/2.8 is identical (same part number and everything) to the hood for the FF 28-75/2.8.

...which makes sense since they're essentially the same FL's.

They aren't the same focal length, they have a somewhat similar FOV/AOV. That's why they have similar hoods although the aps-c lens is more like 34-100mm in field of view.

deadwolfbones · 03-31-2010, 04:07 PM

Originally posted by Blue

They aren't the same focal length, they have a somewhat similar FOV/AOV. That's why they have similar hoods although the aps-c lens is more like 34-100mm in field of view.

Yes, that's what I meant, FoV, not FL.

17*1.5 = 25.5
50*1.5 = 75

So 26-75 effective vs 28-75 actual. Close enough.

creampuff · 03-31-2010, 04:18 PM

Originally posted by Egg Salad

Assuming I'd have my Sigma lens line up completed I'd have the 28/1.8 Macro, 50/1.4 HSM and (already succeeded) 70-200.
So my question is: could I put the 50's hood on the 28mm lens and the 70-200's on the 50?
Reason is flare protection. These new lenses probably fare better than my "old" Asperical II but you can never have too much hood.

From your list of Sigma lenses, the respective lens hoods are different from one another. The hoods differ in terms of shape, depth and width even though they share the same 77mm filter size.
While you might get away with using a deeper hood if the lens is mounted on a cropped sensor, the only sure way to know is to test for vignetting. Also since the hoods are bayonet type, it is anyone's guess if they fit perfectly on another lens.

Blue · 03-31-2010, 04:25 PM

Originally posted by deadwolfbones

Yes, that's what I meant, FoV, not FL.

17*1.5 = 25.5
50*1.5 = 75

So 26-75 effective vs 28-75 actual. Close enough.

Yeah, the wide end would be the limiting factor on the hood.

Egg Salad · 04-01-2010, 09:46 AM

Ok so one hood might not fit all. Fortunately at this stage it is a purely imaginary issue so I don't care.

Thanks.

03-31-2010, 10:06 AM	#1
Egg Salad Veteran Member Join Date: Jul 2009 Location: Berlin, Germany Posts: 344	Are Sigma's lens hoods interchangeable? Assuming I'd have my Sigma lens line up completed I'd have the 28/1.8 Macro, 50/1.4 HSM and (already succeeded) 70-200. So my question is: could I put the 50's hood on the 28mm lens and the 70-200's on the 50? Reason is flare protection. These new lenses probably fare better than my "old" Asperical II but you can never have too much hood.

03-31-2010, 04:18 PM	#8
creampuff Veteran Member Join Date: May 2007 Location: Singapore Photos: Gallery Posts: 3,953	Originally posted by Egg Salad Assuming I'd have my Sigma lens line up completed I'd have the 28/1.8 Macro, 50/1.4 HSM and (already succeeded) 70-200. So my question is: could I put the 50's hood on the 28mm lens and the 70-200's on the 50? Reason is flare protection. These new lenses probably fare better than my "old" Asperical II but you can never have too much hood. From your list of Sigma lenses, the respective lens hoods are different from one another. The hoods differ in terms of shape, depth and width even though they share the same 77mm filter size. While you might get away with using a deeper hood if the lens is mounted on a cropped sensor, the only sure way to know is to test for vignetting. Also since the hoods are bayonet type, it is anyone's guess if they fit perfectly on another lens. Last edited by creampuff; 03-31-2010 at 04:25 PM.

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03-31-2010, 10:25 AM	#2
sterretje Veteran Member Join Date: Dec 2008 Location: Roodepoort, South Africa Photos: Gallery \| Albums Posts: 3,561	In general: no. The lens hood for a longer focal length lens is longer and will cause vignetting on a lens with shorter focal length. On all lenses that I have owned, the lens hoods are different.

03-31-2010, 10:48 AM	#3
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,892	I think I understand where you are coming from. I have a sigma APO 70-200F2.8 EX (non DG Non Macro) While I have never had an issue with flare, I don't shoot close to the sun, and I do know that this lens is a full frame lens. I have often wondered why lens manufacturers of full frame lenses, don't offer options for ASP-C Hoods, which could be longer and allow shooting closer into the sun. My tamron 28-75 F2.8 is in the same boat, as are all my K Mount lenses with standard hoods, and my SMC-FA-J 18-35. All the hoods are designed for no vignetting with film (36x 24 mm frame) not ASP-C with a 24x 16mm frame.

03-31-2010, 11:27 AM	#4
Egg Salad Veteran Member Join Date: Jul 2009 Location: Berlin, Germany Posts: 344 Original Poster	Yes, I know they are designed for full frame coverage which is the reason they are about 50% too short (to offer perfect length) when used on smaller sensors (such as Pentax'). So knowing that all of the mentioned lenses are designed for full frame (and also all having 77mm threads) their hoods also are. And with a 28mm lens giving the same FOV as a 43mm lens the 50/1.4 is close enough to make it logical to me to use its hood on this said 28/1.8 and the hood for the 70-200 on the 50/1.4 which by itself would offer the FOV of a ~75mm lens. Still wouldn't have a perfect hood for the 70-200 but I would need to buy a 100-300 then and I won't go this far. But maybe I could find this only hood, too. To let you know: Sigma will ship their newly developed 70-200 OS DG whatever with a 2-way hood - fitting both FF and APS-C. Don't know about their other new lenses. EDIT: I think the Sigma 100-300 actually has a filter thread of 82mm so even if I'd mean that seriously I couldn't use its hood on my other lenses. Last edited by Egg Salad; 03-31-2010 at 12:10 PM.

03-31-2010, 02:19 PM	#5
deadwolfbones Veteran Member Join Date: Sep 2007 Location: Santa Fe, NM Posts: 7,451	I know that on the Tamron side the hood for the APS-C 17-50/2.8 is identical (same part number and everything) to the hood for the FF 28-75/2.8. ...which makes sense since they're essentially the same FL's.

03-31-2010, 02:40 PM	#6
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by deadwolfbones I know that on the Tamron side the hood for the APS-C 17-50/2.8 is identical (same part number and everything) to the hood for the FF 28-75/2.8. ...which makes sense since they're essentially the same FL's. They aren't the same focal length, they have a somewhat similar FOV/AOV. That's why they have similar hoods although the aps-c lens is more like 34-100mm in field of view.

03-31-2010, 04:07 PM	#7
deadwolfbones Veteran Member Join Date: Sep 2007 Location: Santa Fe, NM Posts: 7,451	Originally posted by Blue They aren't the same focal length, they have a somewhat similar FOV/AOV. That's why they have similar hoods although the aps-c lens is more like 34-100mm in field of view. Yes, that's what I meant, FoV, not FL. 171.5 = 25.5 501.5 = 75 So 26-75 effective vs 28-75 actual. Close enough.

03-31-2010, 04:25 PM	#9
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by deadwolfbones Yes, that's what I meant, FoV, not FL. 171.5 = 25.5 501.5 = 75 So 26-75 effective vs 28-75 actual. Close enough. Yeah, the wide end would be the limiting factor on the hood.

04-01-2010, 09:46 AM	#10
Egg Salad Veteran Member Join Date: Jul 2009 Location: Berlin, Germany Posts: 344 Original Poster	Ok so one hood might not fit all. Fortunately at this stage it is a purely imaginary issue so I don't care. Thanks.

Are Sigma's lens hoods interchangeable?

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