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Archive 2011 · 500/4L in dry cabinet (Totech CS-151SS)
  
 
jcolwell
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p.1 #1 · p.1 #1 · 500/4L in dry cabinet (Totech CS-151SS)


I'm thinking of getting a Totech CS-151SS dry cabinet. Does anybody know if a Canon EF 500mm f/4L IS lens will fit on one of its shelves? The Totech data sheet shows internal shelf dimensions of 40cm x 34cm, which means that it's a tight fit. I've attached a figure below showing the scaled lens and shelf geometries. I wonder if internal gizmos for the sliding shelves will cut down the usable space. Also, if there is a shelf at the bottom, can it be removed?

Thanks in advance, Jim







Apr 21, 2011 at 01:38 PM
EB-1
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p.1 #2 · p.1 #2 · 500/4L in dry cabinet (Totech CS-151SS)


I would buy something bigger if it is that tight and such an inefficient use of space. You might also want to use similar lenses in the future and they may not fit. Why is there the need for the dry cabinet?

EBH



Apr 23, 2011 at 02:19 AM
Johnny Bravo
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p.1 #3 · p.1 #3 · 500/4L in dry cabinet (Totech CS-151SS)


My question exactly--I can't understand the need. Packets of dessicant are dirt cheap and do exactly what they're supposed to do, without restricting/limiting storage (they work right in the bags I use in the field.


Apr 23, 2011 at 10:20 AM
jcolwell
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p.1 #4 · p.1 #4 · 500/4L in dry cabinet (Totech CS-151SS)


I have three older alt lenses in the shop getting fungus removed, and I just found another one. None of them had any that I could see when I bought them. None of my Canon EF lenses are currently affected, but I don't want to take any chances. Summer in Halifax is warm and humid.

I agree that desiccant is a solution, but it's not the only one, nor necessarily the best one. Just because you don't understand something doesn't make it bad, it's just something you don't understand.

As far as fit goes, it's not so important for the 500/4, as it's well sealed. As far as getting something bigger goes, it's certainly a good idea; however, as far as I can tell, it represents a significant step up in cost and power consumption, as it's going from 'home' to 'laboratory' technologies.

I was simply asking a question. Maybe somebody out there has the answer.



Apr 23, 2011 at 11:45 AM
jcolwell
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p.1 #5 · p.1 #5 · 500/4L in dry cabinet (Totech CS-151SS)


Alrighty, then. Now I have the answer. Yes it does fit across the diagonal, but as EB-1 said, it's not a very efficient use of space. So, I simply removed two bottom shelves, and the 500/4L IS fits just fine standing up, as shown below. As configured, the cabinet has plenty of room for the three to four dozen lenses that I'll normally be storing in it. It has 37 lenses in it right now. I could easily add another shelf in the top section, and have them lying down, but that probably won't be necessary. I could also add a partial shelf in the bottom section, but I don't think I'll bother.

Within a few hours of getting it set up, the inside humidity dropped from 65% ambient to about 45%. The summer humidity here often gets above 90%, and so I'm looking forward to keeping the lenses a lot drier. Too bad I can't fit in it.

It's a simple system that works with a supply of desiccant material, located in a 'control chamber', inside the cabinet. Every 6 hours, the desiccant material is automatically 'rejuvinated', and the water content in the desiccant is expelled. It's not entirely dust proof, but it has nicely sealed doors, and it's a heck of a lot better than the open bookcase that I previously used.

If I ever get a lens that's larger than my 500/4L IS (can you say 800L?), then I'll remove another shelf in the bottom section. If I can't find space for the rest of the stuff, then I'll just buy another, smaller cabinet to hold the overflow. The new case would cost substantially less than a replacement hood for the 800L.

It's a http://www.xdry.com/dry-cabinet/desiccator-cs-151ss.asp.

I think it's worth every penny. YMMV.








May 06, 2011 at 01:11 PM
ryankarr
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p.1 #6 · p.1 #6 · 500/4L in dry cabinet (Totech CS-151SS)


How many pennies was that?


May 06, 2011 at 11:48 PM
 

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Richard Nye
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p.1 #7 · p.1 #7 · 500/4L in dry cabinet (Totech CS-151SS)


Sweeeet. But I would invest in some lens caps too. YMMV


May 06, 2011 at 11:57 PM
Bobster2
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p.1 #8 · p.1 #8 · 500/4L in dry cabinet (Totech CS-151SS)


Keeping caps on would only tend to trap moisture inside the lens which would defeat the purpose.




May 07, 2011 at 12:59 AM
jcolwell
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p.1 #9 · p.1 #9 · 500/4L in dry cabinet (Totech CS-151SS)


Richard Nye wrote:
Sweeeet. But I would invest in some lens caps too. YMMV


All of my lenses have caps. You can see the only two lenses in the case that don't have caps. This is intentional. They're a CZ 135/2.8 and Nikkor 105/1.8 that both have slight amounts of haze on internal elements. I hope to reduce that by drying them out. If it doesn't work, then they're off to the repair centre. Sorry for the confusion.



May 07, 2011 at 10:46 AM
jcolwell
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p.1 #10 · p.1 #10 · 500/4L in dry cabinet (Totech CS-151SS)


ryankarr wrote:
How many pennies was that?


About $1200 CA, delivered.



May 07, 2011 at 10:46 AM
ryankarr
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p.1 #11 · p.1 #11 · 500/4L in dry cabinet (Totech CS-151SS)


jcolwell wrote:
All of my lenses have caps. You can see the only two lenses in the case that don't have caps. This is intentional. They're a CZ 135/2.8 and Nikkor 105/1.8 that both have slight amounts of haze on internal elements. I hope to reduce that by drying them out. If it doesn't work, then they're off to the repair centre. Sorry for the confusion.


Some sunlight might help if the drying doesn't do it.



May 07, 2011 at 02:37 PM
jcolwell
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p.1 #12 · p.1 #12 · 500/4L in dry cabinet (Totech CS-151SS)


I already "put them on the beach" and it didn't make any difference. Maybe it stopped progress, but that's about it. Also, I often put all of my Alts on the beach for a month or so, and I still have problems. So, now I'll try to eliminate the humidity that they need, in addition to darkness and warmth, at least, not really cold.


May 07, 2011 at 02:51 PM





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